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Calculators
Everyday math, money and health calculators — instant answers, no signup.
Money & Finance
💱 Currency Converter
Convert between 35 world currencies with daily reference rates.
🕌 Zakat Calculator
Calculate 2.5% zakat with live nisab thresholds.
💼 Salary Calculator
Convert hourly, weekly, monthly pay to annual salary.
💰 Tip Calculator
Bill + tip %, total, split per person.
🏷️ Discount Calculator
Sale price, savings amount, discount percentage.
🏦 Loan EMI Calculator
Monthly EMI, total interest, repayment schedule.
🏠 Mortgage Calculator
Monthly payment, total interest, amortization schedule.
📈 Compound Interest Calculator
Investment growth chart & year-by-year breakdown.
Math & Everyday
🎂 Age Calculator
Exact age, total days lived, next birthday countdown.
📊 Percentage Calculator
Percent of number, ratio as %, increase/decrease.
📅 Date Difference
Days, weeks, months, years between any two dates.
🎓 GPA Calculator
Semester GPA from credits & grades, 4.0 scale.
⛽ Fuel Cost Calculator
Trip fuel cost, fuel needed & cost per km/mile.
Health & Fitness
⚖️ BMI Calculator
Body Mass Index with health categories & ideal weight.
🤰 Due Date Calculator
Baby's due date, weeks pregnant & trimester dates.
🔥 BMR Calculator
Basal metabolic rate + daily calorie needs (TDEE).
😴 Sleep Calculator
Best bedtime & wake time by 90-min sleep cycles.
💧 Water Intake Calculator
Personal daily hydration target by weight & activity.
🔥 Calorie Calculator
Daily calorie needs: BMR + TDEE for loss/gain.
Converters
Convert units, currencies, dates, text and files in one click.
Converters
📏 Unit Converter
Length, weight, temperature, volume, speed conversion.
🔤 Text Case Converter
UPPER, lower, Title Case, Sentence case — instant.
🌍 Time Zone Converter
Compare times across world cities, DST-aware.
Generators & Utilities
Create passwords, QR codes, documents, designs and more — free forever.
Generators & Creators
📱 QR Code Generator
Text or URL to scannable QR code, PNG download.
📝 Word Counter
Words, characters, sentences, reading time — instant.
🧾 Invoice Generator
Professional invoices with tax & totals, PDF ready.
🔐 Password Generator
Strong random passwords with strength meter.
🎲 Random Number Generator
Random numbers in any range, no-duplicates option.
PDF Tools
Media & Design
🎨 Color Picker
HEX/RGB/HSL/CMYK converter, palettes & contrast checker.
🎬 Video Clipper
Trim videos, add text, 9:16 export for TikTok & Reels.
Developer Tools
🛡️ Password Strength Checker
Strength score, crack-time estimate & tips. Private.
Islamic Tools
🕌 Athan Prayer Times
Accurate namaz times, Hijri date & next prayer countdown. ✓ 100% FREE
🧭 Athan Qibla Compass
Find exact Qibla direction to Makkah with live compass. ✓ 100% FREE
📿 Athan Tasbih Counter
Digital dhikr counter with vibration & daily totals. ✓ 100% FREE
Time & Productivity
⏱️ Stopwatch & Timer
Stopwatch with laps and countdown timer with alarm. Free.
⏳ Countdown Timer
Count down to any date & time, live display.
Fun & Games
🎯 Dice Roller & Coin Flip
Virtual dice d4–d100 and fair coin flip with animation.
💘 Love Compatibility
Fun love match % from two names — shareable.
⌨️ Typing Speed Test
60-sec test: WPM, accuracy, live feedback.
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Free tools that respect your privacy
Most "free" online tools make you create an account before showing a single result. Every tool on this site works the opposite way: open the page, use it, leave — no signup, no email, no tracking of what you calculate. Currency conversions, BMI results, and password generation all happen inside your own browser; your numbers are never sent to a server, stored, or sold. That is a deliberate design choice, not a missing feature.
How to get the most from these calculators
Pick the right tool for the question. Comparing job offers? The salary calculator converts hourly, weekly, and annual pay both ways. Planning weight loss? The calorie calculator combines the Mifflin-St Jeor equation with activity levels to give a daily target, and the guide below it explains the math. Sending money home? The currency converter shows the reference rate so you can judge your provider's margin.
Read the worked examples. Under each calculator you will find the exact formulas with numbers filled in — the same method teachers use, so you can verify the result by hand or show your working.
Check the FAQs. Every tool page answers the questions people actually ask: common mistakes, edge cases, and when a result needs a professional's eyes instead of a calculator's.
Why every tool stays free
This site is maintained by an independent developer who believes basic digital utilities — converting a currency, counting words, checking a BMI — should not sit behind paywalls or data harvesting. The tools are free forever, work on any phone or computer, and new ones are added regularly. If a tool saves you time, the best thanks is sharing it with someone who needs it.
Frequently asked questions
Are these tools really 100% free?
Yes — every tool on this site is free forever, with no trials, no locked features and no “pro” upsell. The site is supported by ads, so you never pay anything.
Do I need to sign up or create an account?
No. Open any tool, use it, and leave. There is no login, no email required, and nothing to remember.
Is my data private? Where do my calculations go?
Everything runs inside your own browser. Your numbers are never sent to a server, stored, or sold — what you calculate stays on your device.
Do the tools work on mobile phones?
Yes. Every tool is designed mobile-first and works on any phone, tablet or computer with a modern browser — nothing to install.
Which tools do people use most?
The most visited tools are the currency converter, BMI calculator, age calculator, zakat calculator and loan EMI calculator — but all 109+ tools are one search away.