All Tools
Every calculator and utility on DoubleNeed, organized by category.
💵 Finance & Money
Filter this category →EMI Calculator
Monthly installment for bike, car, or home loans, plus total interest payable.
Open tool →Discount & VAT Calculator
Net price after percentage discounts or added VAT/tax.
Open tool →Split Bill Calculator
Divide a restaurant or event bill among friends, with tip & per-person breakdown.
Open tool →Loan Prepayment Impact
Interest saved and tenure reduction from extra loan prepayments.
Open tool →Grocery Unit Price Comparator
Compare two pack sizes/prices to see which is the better value.
Open tool →Islamic Inheritance (Faraid) Calculator
Estimate Quranic estate distribution among spouse, children, and parents.
Open tool →Compound Interest Calculator
See how your investment grows with compound interest over time.
Open tool →Savings Goal Calculator
Find out how much to save monthly to reach your target.
Open tool →Tip Calculator
Quickly calculate tip amount and total bill per person.
Open tool →Loan Comparison Calculator
Compare two loan offers side by side to see which costs less.
Open tool →Discount Stacking Calculator
Calculate the final price after applying multiple discounts in sequence.
Open tool →Zakat Calculator
Calculate your annual Zakat based on cash, gold, silver, and other assets.
Open tool →Simple Interest Calculator
Calculate simple interest on a principal amount over time.
Open tool →Net Worth Calculator
Calculate your total net worth from assets and liabilities.
Open tool →Inflation Calculator
See how inflation affects the value of money over time.
Open tool →Loan Amortization Schedule
See a full month-by-month breakdown of your loan payments.
Open tool →Reverse VAT Calculator
Find the original price before VAT from a final price.
Open tool →Rent Affordability Calculator
Find how much rent you can comfortably afford based on your income.
Open tool →House Rent Split Calculator
Split rent and utilities fairly among flatmates.
Open tool →Crypto Profit/Loss Calculator (BD)
Calculate net crypto profit or loss including fees and your own tax rate.
Open tool →Home Loan Eligibility Calculator (BD)
Get a general estimate of your maximum eligible home loan amount.
Open tool →Commission / Sales Incentive Calculator
Calculate base commission plus bonus incentive on sales above target.
Open tool →Gold / Silver Price Calculator (BD)
Calculate the final price of gold or silver jewelry including making charge and VAT.
Open tool →DPS / Compound Interest Profit Calculator
Calculate maturity value and profit for a monthly DPS savings scheme.
Open tool →PayPal / Wise Fee Calculator
Estimate how much fee will be deducted when sending or withdrawing money via PayPal or Wise.
Open tool →bKash & Nagad Cash Out Charge Calculator
Calculate cash out charges for bKash and Nagad by agent or app/USSD rate.
Open tool →🛂 Passport & Visa
Filter this category →Passport Fee Calculator (BD)
Calculate e-Passport fees based on validity, pages, and delivery type.
Open tool →Passport Photo Size & Background Resizer Guide
Crop your photo to US, Schengen, or BD e-passport photo specifications and check background compliance.
Open tool →Schengen Visa 90/180 Days Rule Calculator
Calculate your remaining allowed days and next eligible entry date under the Schengen 90/180 rule.
Open tool →Passport Validity 6-Month Rule Checker
Check if your passport meets the common 6-month validity requirement for your travel date.
Open tool →Visa Free / On-Arrival Countries Checker (BD Passport)
Filter and search countries offering visa-free or on-arrival visa access for Bangladeshi passport holders.
Open tool →Indian Visa (IVAC) Fee & Port Endorsement Estimator
Estimate Indian tourist/medical visa processing fee and additional port/route change charges for Bangladeshi applicants.
Open tool →Tourist Visa Bank Statement & Solvency Calculator
Estimate a safe bank balance to show for a tourist visa application based on trip duration.
Open tool →E-Passport Delivery Status & Date Estimator
Estimate your e-passport delivery date based on application date, police verification, and delivery type.
Open tool →Saudi Umrah / Tourist Visa Cost Breakdown Calculator
Calculate total Umrah or tourist visa cost in BDT, including fee, insurance, and ground service.
Open tool →Malaysia & Gulf Medical Fitness (GAMCA/Wafid) Slip Fee Tracker
Check GAMCA/Wafid online medical slip registration fee and requirements for workers going abroad.
Open tool →Customs Currency Declaration & Travel Cash Endorsement Limit
Calculate the maximum cash/card endorsement limit a passenger can carry per year under Bangladesh Bank rules.
Open tool →US Visa (MRV) Fee to BDT Converter & Slot Tracker
Calculate the BDT amount needed for a US visa MRV fee by category (B1/B2, F1, etc).
Open tool →Dubai / UAE Tourist Visa Overstay Fine Calculator
Calculate the daily overstay fine for a UAE tourist visa in AED and BDT.
Open tool →Student Visa Blocked Account & Tuition Estimator (Germany/Europe)
Estimate the required blocked account amount and first-semester budget for studying in Germany/Europe.
Open tool →Thailand Visa on Arrival vs Sticker Visa Cost Comparator
Compare the cost and process of Thailand visa-on-arrival versus a pre-arranged sticker visa.
Open tool →Visa Processing Working Days & Holiday Countdown
Count working days for visa processing, excluding weekends and public holidays.
Open tool →Transit Visa Requirement & Layover Duration Checker
Check whether a transit visa is required for your layover and whether you can leave the airport.
Open tool →UK Visa Priority & Super Priority Fee Estimator
Calculate the extra cost of UK visa Priority or Super Priority processing on top of the standard fee.
Open tool →IHS (Immigration Health Surcharge) Fee Calculator (UK)
Calculate the UK Immigration Health Surcharge based on visa duration and applicant type.
Open tool →Biometric Fee & VFS Global Service Charge Calculator
Calculate biometric fee plus optional VFS Global services like SMS tracking or premium lounge.
Open tool →Canada Visitor Visa Processing Time & Biometrics Validity Checker
Check estimated Canada visitor visa processing time and how much of your 10-year biometrics validity remains.
Open tool →Passport MRZ Code Generator & Validator
Generate or validate the Machine Readable Zone (MRZ) lines on a passport using the official ICAO checksum algorithm.
Open tool →Airport Travel Tax (Embarkation Tax) Estimator (BD)
Calculate the government travel tax for departing Bangladesh by air, land, or river route.
Open tool →International Travel Health Insurance Coverage Checker
Check whether your travel insurance meets the minimum €30,000/$50,000 Schengen/visa coverage requirement.
Open tool →Lost or Stolen Passport Emergency Travel Pass Guide
Checklist of documents and fees needed for an emergency travel document after losing your passport abroad.
Open tool →Dual Citizenship & NVR Eligibility Checker
Check No Visa Required (NVR) seal eligibility and fee for Bangladeshi-origin dual citizens.
Open tool →E-Visa File Size & PDF Document Compressor Guide
Compress a scanned document image to a target file size for e-visa portal uploads, with a full PDF compression guide.
Open tool →Gulf Country Exit Re-entry Visa Fine & Extension Estimator
Calculate the fine for an expired exit re-entry visa in Saudi Arabia or the Gulf.
Open tool →🛂 Government & Public Services
Filter this category →Police Clearance Certificate Eligibility & Fee Tracker
Check the challan fee and eligibility requirements for an online Police Clearance Certificate application.
Open tool →Pension Calculator
Defined-benefit pension estimate with a full breakdown.
Open tool →Electricity Bill Estimator (BD)
Estimate your monthly bill using current BERC tariff slabs.
Open tool →Salary After Tax (BD)
Net take-home salary after BD income tax slabs and deductions.
Open tool →BD Land Registration & Stamp Duty Calculator
Estimate total registration fee, stamp duty, and local tax for buying land or a flat in Bangladesh.
Open tool →Bangladesh Sanchayapatra Profit & Tax Estimator
Calculate quarterly Sanchayapatra profit and net income after source tax deduction.
Open tool →Customs Duty & Import Tax Calculator (BD)
Estimate customs duty and VAT for parcels, mobile phones, or baggage rule imports into Bangladesh.
Open tool →Birth Certificate Registration & Correction Fee Guide
Calculate government fee for new birth registration, age correction, or English copy.
Open tool →WASA Water Bill & Sewerage Charge Calculator
Estimate monthly Dhaka/Chattogram WASA water bill based on meter reading and connection type.
Open tool →Trade License Fee & Renewal Charge Estimator
Estimate trade license fee and renewal charge from Union Parishad, Paurashava, or City Corporation.
Open tool →Freelance Remittance 2.5% Cash Incentive Calculator
Calculate the government cash incentive on remittance sent through legal banking channels.
Open tool →Currency Converter
Convert BDT to USD, INR, SAR, EUR and other major currencies.
Open tool →NID Correction & Re-issue Fee Calculator (BD)
Calculate government fee and VAT for NID/Smart Card correction or reissue.
Open tool →Vehicle Registration Cost Estimator (BD)
Estimate BRTA vehicle registration fees by vehicle type and engine capacity.
Open tool →TIN & Tax Year Calculator (BD)
Find your current Bangladesh tax year and assessment year.
Open tool →Driving License Cost Estimator (BD)
Estimate total BRTA driving license cost — learner, smart card, and category fees.
Open tool →Bank Cheque Number & Routing Code Finder (BD)
Look up the branch routing number format for Bangladeshi banks for EFTN/online transfers.
Open tool →❤️ Health & Lifestyle
Filter this category →BMI Calculator
Check weight status based on height and weight.
Open tool →Water Intake Calculator
Daily recommended water intake based on weight & activity level.
Open tool →Sleep Cycle Calculator
Optimal bedtime or wake-up time based on 90-minute REM cycles.
Open tool →Period & Ovulation Tracker
Estimate cycle dates, fertile window, and next period start date.
Open tool →Calorie Deficit & TDEE Planner
Find your TDEE and daily calorie target for your weight goal.
Open tool →Intermittent Fasting Window
Eating and fasting windows for 16:8, 18:6, OMAD and more.
Open tool →Pregnancy Due Date Calculator
Estimate your due date based on your last menstrual period.
Open tool →BMR Calculator
Find your Basal Metabolic Rate — calories burned at rest.
Open tool →Running Pace Calculator
Calculate your running pace, time, or distance.
Open tool →Body Fat Percentage Calculator
Estimate body fat percentage using the US Navy method.
Open tool →Ideal Weight Calculator
Estimate a healthy weight range based on height and gender.
Open tool →Heart Rate Zone Calculator
Find your target heart rate zones for different exercise intensities.
Open tool →Pregnancy Weight Gain Calculator
Track healthy pregnancy weight gain range based on pre-pregnancy BMI.
Open tool →Waist-to-Hip Ratio Calculator
Estimate health risk based on waist and hip measurements.
Open tool →Wedding Budget Calculator (BD)
Split your total wedding budget across venue, catering, decoration, and more.
Open tool →Calorie Deficit Meal Planner (BD Foods)
Find your daily calorie target and log common Bangladeshi meals.
Open tool →🗓️ Date & Time
Filter this category →Age Calculator
Find your exact age in years, months, weeks, days, hours & minutes.
Open tool →Digital Clock & World Time
Live local time plus a world time converter.
Open tool →Date Difference Calculator
Exact gap between two dates in years, months, weeks & total days.
Open tool →Working Days Calculator
Total working days in a month or year, excluding weekends & holidays.
Open tool →Next Public Holiday (BD)
Countdown to the next Bangladesh government public holiday.
Open tool →Time Duration Calculator
Find the exact duration between two times, in hours and minutes.
Open tool →Age Difference Calculator
Find the exact age gap between two people.
Open tool →Islamic (Hijri) ↔ Gregorian Date Converter
Convert dates between Hijri and Gregorian calendars with notable occasions.
Open tool →Bangladesh Postal Code & Post Office Finder
Search for postal codes and nearby post offices by district or upazila.
Open tool →Bangla Date (Bengali Calendar) & Season Converter
Convert a Gregorian date to the Bengali calendar date, month, and season (ritu).
Open tool →📐 Math & Conversions
Filter this category →Unit Converter
Convert length, weight, and temperature units.
Open tool →Percentage Calculator
Percentage increase/decrease, exam scores, and profit/loss.
Open tool →Land Area Calculator (BD)
Convert Shotok, Katha, Bigha, Acre and other BD land units.
Open tool →Height Converter (cm ↔ ft/in)
Convert height between centimeters and feet & inches instantly.
Open tool →Ratio Calculator
Simplify ratios or find equivalent ratios instantly.
Open tool →Roman Numeral Converter
Convert numbers to Roman numerals and back.
Open tool →Percentage of a Number Calculator
Find what X% of a number is, or what percentage one number is of another.
Open tool →Data Storage Converter
Convert between KB, MB, GB, TB and bits/bytes.
Open tool →Scientific Calculator
An easy-to-use scientific calculator for students, with explanations for every function key.
Open tool →Shoe & Clothing Size Converter
Convert shoe and clothing sizes between US, UK, EU, and other regional systems.
Open tool →🏠 Home & Household
Filter this category →Rent vs Buy Calculator
Compare the long-term cost of renting vs buying a home.
Open tool →Solar Panel Calculator
Estimate solar panel savings and payback period.
Open tool →Cooking Measurement Converter
Convert cups, tablespoons, grams, and other cooking units.
Open tool →Recipe Scaling Calculator
Scale a recipe up or down for a different number of servings.
Open tool →Wall Paint Quantity Calculator
Calculate how much paint you need based on room dimensions.
Open tool →Floor Tile Calculator
Calculate how many tiles you need for a room, including wastage.
Open tool →Cement & Sand Requirement Calculator
Estimate cement, sand, and aggregate needed for construction work.
Open tool →Baking Measurement Converter
Convert cups, tablespoons, and grams for common baking ingredients.
Open tool →Recipe Ingredient Scaler
Scale your recipe ingredients up or down to any number of servings.
Open tool →Pizza Dough Ratio Calculator
Calculate exact flour, water, salt, yeast, and oil using baker's percentages.
Open tool →Land Mutation (Namjari) Cost Estimator
See the official government mutation fee breakdown for land in Bangladesh.
Open tool →Brick & Mortar Quantity Calculator
Find the bricks, cement, and sand required for your wall or foundation.
Open tool →AC / Room Cooling BTU Calculator
Find the recommended AC cooling capacity for your room.
Open tool →🚗 Cars & Transportation
Filter this category →Fuel & Mileage Calculator
Total fuel cost, distance covered, and per-km travel expense.
Open tool →CNG / Rickshaw Fare Estimator
Estimate trip fare by distance using standard local rates.
Open tool →Car Depreciation Calculator
Estimate your car's resale value over time.
Open tool →EV Charging Cost Calculator
Calculate the cost to charge an electric vehicle.
Open tool →Toll / Highway Cost Estimator
Estimate total toll cost for a route based on vehicle type and toll points.
Open tool →BRTA Number Plate Serial & Registration Year Decoder
Estimate a vehicle's approximate registration year from its number plate serial.
Open tool →🎓 Students & Education
Filter this category →GPA/CGPA Calculator
Calculate your GPA or CGPA from course grades and credit hours.
Open tool →Attendance Calculator
Track your attendance percentage and classes you can miss.
Open tool →Exam Grade Calculator
Find what score you need on your final exam.
Open tool →School Admission Age Calculator
Check if a child meets the age cutoff for school admission.
Open tool →Class Routine Generator
Create, edit, and download a printable school/college class routine.
Open tool →Required Final Exam Score Calculator
Find the score you need on your final exam to hit your target grade.
Open tool →Class Teacher Homework & Study Manager
A printable homework tracker for teachers — with auto-save, class grouping, and PDF export.
Open tool →Final Exam Grade Calculator
Find the minimum score you need on your final exam to reach your target grade.
Open tool →GPA to Percentage Calculator
Convert your GPA (4.0 or 5.0 scale) to an equivalent percentage.
Open tool →BD Govt Job Age Limit & Quota Eligibility Checker
Check maximum age eligibility and applicable quota benefits for a government job circular.
Open tool →SSC & HSC Result Marksheet GPA Converter
Calculate your full SSC/HSC GPA from subject-wise marks, including 4th subject point adjustment.
Open tool →✈️ Travel & World
Filter this category →🛍️ Shopping & Consumer
Filter this category →Subscription Cost Calculator
See the true yearly cost of all your subscriptions combined.
Open tool →BOGO Savings Calculator
Find out exactly how much you save on Buy One Get One deals.
Open tool →Sale Price & Markdown Calculator
Calculate the final sale price and amount saved after discounts.
Open tool →Markup vs Margin Calculator
Compare markup percentage and margin percentage from cost and selling price.
Open tool →Freelance Hourly Rate Calculator
Find the hourly rate you need to charge based on your desired income.
Open tool →💼 Business & Freelancing
Filter this category →ROI Calculator
Calculate return on investment as a percentage and total gain.
Open tool →Break-Even Calculator
Find how many units you need to sell to cover your costs.
Open tool →Salary ↔ Hourly Calculator
Convert between annual salary and hourly wage.
Open tool →Pomodoro Timer
Focus timer with work/break cycles for productivity.
Open tool →Overtime Pay Calculator
Calculate overtime earnings based on hourly rate and extra hours worked.
Open tool →Markup Calculator
Calculate selling price and profit margin from cost and markup percentage.
Open tool →Conversion Rate & Lead Cost Calculator
Find cost per lead, conversion rate, and customer acquisition cost.
Open tool →YouTube Ad Revenue Calculator
Estimate your YouTube ad revenue based on views, CPM, and niche.
Open tool →Dropshipping Profit Calculator
Calculate your true profit margin after product cost, shipping, ads, and platform fees.
Open tool →Amazon FBA Profit Calculator
Estimate your Amazon FBA profit after referral fees, fulfillment fees, and product cost.
Open tool →SaaS Pricing Calculator
Find a sustainable subscription price based on your costs, target margin, and churn.
Open tool →TikTok Creator Fund Calculator
Estimate TikTok Creator Fund earnings based on views and engagement.
Open tool →Consulting Rate Calculator
Compare hourly vs package pricing for consulting work based on your target income.
Open tool →Print on Demand Profit Calculator
Calculate your profit per sale on Printful, Printify, or similar POD platforms.
Open tool →Email Marketing ROI Calculator
Calculate the ROI of an email marketing campaign based on revenue and cost.
Open tool →Influencer Rate Calculator (BD)
Estimate a fair sponsorship rate for Instagram or YouTube content based on followers and engagement.
Open tool →E-book Royalty Calculator (Amazon KDP)
Calculate your royalty earnings per book sale on Amazon KDP.
Open tool →Hourly Wage to Seconds ("Time is Money")
Watch your earnings tick up live, second by second, based on your hourly wage.
Open tool →🌐 Internet & Technology
Filter this category →Secure Password Generator
Generate strong, customizable passwords — letters, numbers, symbols.
Open tool →QR Code Generator
Turn URLs, text, or phone numbers into downloadable QR codes.
Open tool →Password Strength Checker
Check how strong your password is and why.
Open tool →Text to Speech
Convert typed text into spoken audio using your browser.
Open tool →Dice Roller & Coin Flip
Roll virtual dice or flip a coin — great for games and decisions.
Open tool →Internet Data Usage Calculator
Estimate monthly data usage from streaming, browsing, and downloads.
Open tool →Video File Size Estimator
Estimate video file size based on resolution, bitrate, and duration.
Open tool →Wi-Fi Speed Requirement Calculator
Find the internet speed you need based on devices and usage.
Open tool →Pixel ↔ Inch/Centimeter Converter
Convert between pixels, inches, and centimeters based on DPI.
Open tool →Storage Capacity Calculator
Find how many photos or videos fit in a given storage size.
Open tool →YouTube Thumbnail Downloader (HD & 4K)
Download the highest resolution thumbnail from any public YouTube video URL.
Open tool →👨💻 Developer Tools
Filter this category →JSON Formatter
Format, validate, and minify JSON data.
Open tool →UUID Generator
Generate random UUID v4 identifiers, one or in bulk.
Open tool →Regex Tester
Test regular expressions against sample text with live matches.
Open tool →Random Number Generator
Generate random numbers within any range, with optional uniqueness.
Open tool →Lorem Ipsum Generator
Generate placeholder text for designs and mockups.
Open tool →CSS Unit Converter
Convert between px, rem, em, and other CSS units.
Open tool →HTML Entity Encoder/Decoder
Encode or decode HTML special characters and entities.
Open tool →Binary/Hex/Decimal Converter
Convert numbers between binary, hexadecimal, and decimal.
Open tool →Text to Binary Converter
Convert text to binary code and back.
Open tool →HTML/CSS/JS Minifier
Shrink your HTML, CSS, or JavaScript by removing whitespace and comments.
Open tool →Cron Expression Generator
Build a valid cron schedule expression with a plain-English explanation.
Open tool →Image Crop Ratio Calculator
Find the largest centered crop for any target aspect ratio.
Open tool →Color Palette Generator
Generate complementary, analogous, triadic, or monochromatic color palettes.
Open tool →URL Encoder/Decoder + UTM QR Generator
Encode/decode URLs and build trackable UTM campaign links with a QR code.
Open tool →SQL Formatter & Validator
Format messy SQL queries and check for basic syntax errors.
Open tool →JWT Decoder & Validator
Decode a JWT token and inspect its header, payload, and expiry.
Open tool →AI Prompt & Content Idea Generator
Generate ready-to-use AI prompts for content ideas — focused on Bangladeshi medical, freelancing, and Islamic content niches.
Open tool →Barcode (EAN-13) Generator & Printable Label Maker
Generate a standard EAN-13 barcode from a product number and print a ready-to-use label.
Open tool →🔤 Text & Content Tools
Filter this category →Word & Character Counter
Real-time word, character, sentence & reading-time counter.
Open tool →Text Case Converter & Cleaner
Convert UPPER/lower/Title case and clean up spacing, line breaks & emojis.
Open tool →Reading Time Calculator
Estimate how long an article takes to read.
Open tool →Internet Download Time Calculator
Estimate download time based on file size and internet speed.
Open tool →Number to Words Converter
Convert numbers into written words — useful for checks and documents.
Open tool →Base64 Encoder / Decoder
Encode or decode text and data using Base64.
Open tool →Social Media Character Counter
Check character limits for Twitter/X, Instagram, Facebook and more.
Open tool →Find and Replace Tool
Find and replace text instantly, with case-sensitive options.
Open tool →Morse Code Translator
Translate text to Morse code and back.
Open tool →Bangla/English Document to PDF Converter
Convert Bangla or English text into a clean, downloadable PDF — perfect Bangla font rendering, no broken letters.
Open tool →Fancy Font / Stylish Text Generator
Convert plain text into stylish Unicode fonts for social media bios and captions.
Open tool →Hashtag Clean & Combiner
Clean up messy hashtag lists and combine them into one ready-to-paste string.
Open tool →Bangla Unicode ↔ Bijoy Text Converter
Convert Bangla text between Unicode (Avro) and Bijoy (ANSI) font encoding.
Open tool →Typing Speed Test
Test your typing speed in WPM and accuracy.
Open tool →Text Diff Checker
Compare two blocks of text and highlight the differences.
Open tool →🎨 Design Tools
Filter this category →Color Converter
Convert colors between HEX, RGB, and HSL formats.
Open tool →Image Aspect Ratio Calculator
Calculate image dimensions while keeping the correct aspect ratio.
Open tool →Countdown Timer
Set a live countdown to any future date and time.
Open tool →Screen Resolution / PPI Calculator
Calculate pixels-per-inch (PPI) from screen size and resolution.
Open tool →📺 Social Tools
Filter this category →YouTube Thumbnail A/B Test Preview Tool
Preview two thumbnails side by side exactly as they appear on YouTube.
Open tool →TikTok/Reels Hashtag Generator (BD)
Get a ready-to-copy mix of trending and Bangla hashtags by category.
Open tool →Google Ads Budget Planner (Small Business)
Estimate daily budget, clicks, and conversions from your monthly ad spend.
Open tool →Video Compression Size Estimator
Estimate final video file size from resolution, bitrate, and duration.
Open tool →WordPress Code & Snippet Generator
Copy-paste ready WordPress sections — Tailwind HTML and PHP Dynamic modes — for Gutenberg and Elementor.
Open tool →Code Snippets & UI Components
Ready-to-use HTML, CSS and JS snippets — buttons, cards, layouts, and more.
Open tool →Social Media Image Size Checker & Resizer
Check your image against platform size guidelines and download a resized version.
Open tool →AI Prompt & Content Idea Generator
Generate ready-to-use AI prompts for content ideas — focused on Bangladeshi medical, freelancing, and Islamic content niches.
Open tool →URL Slug Generator
Convert any text into a clean, SEO-friendly URL slug.
Open tool →Meta Tag Generator
Generate HTML meta tags for SEO and social sharing.
Open tool →📚 Guides & Tutorials
Learn how to use these tools effectively with our in-depth guides and tutorials.
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