All Calculators
Every calculator we offer, grouped by Finance, Health, Math, and Developer tools. Click a category to jump to that section, or scroll to see the full list.
This page lists every calculator on the site. They’re arranged by type: finance (EMI, loan, mortgage, tax, investment, currency, budget), health (BMI, BMR, calories, ideal weight, water, sleep), maths and units (percentage, age, GPA, length, weight, temperature, area, volume, time, scientific), and developer tools (JSON, Base64, JWT, UUID, timestamp, password, colors, minifier). Click a card to open that tool. All processing is done on your device; we don’t collect or save your inputs.
We add and update tools based on what people ask for. If you don’t see what you need, use the search on the home page or get in touch. All tools use standard, well-documented formulas and work on phones, tablets, and desktops. You can bookmark individual calculator links or share them—they stay free and don’t require an account.
Quick idea of what’s here:
Compare loan EMIs and tenures, estimate tax, see investment growth, convert currencies, plan a budget; check BMI and calories, plan sleep and hydration; do percentages, age, GPA, and every common unit conversion; format JSON, decode JWTs, generate UUIDs, convert timestamps, check password strength, work with colors.
Finance & Money
7 calculators
EMI Calculator
Calculate your Equated Monthly Installment for home, car, or personal loans. See monthly payment, total interest, and total cost instantly.
Use calculatorLoan Calculator
Calculate monthly loan payments, total interest, and amortization schedule. Compare terms for personal, auto, and student loans.
Use calculatorMortgage Calculator
Calculate monthly mortgage payments including principal, interest, taxes, and insurance. Plan your home purchase with confidence.
Use calculatorTax Calculator
Estimate your income tax using progressive tax brackets. See effective rate, marginal rate, and total tax owed.
Use calculatorInvestment Calculator
Calculate SIP returns, compound interest, and future value of investments. Visualize wealth growth over time.
Use calculatorCurrency Converter
Convert between 150+ world currencies with live exchange rates. Supports USD, EUR, GBP, INR, JPY, and more.
Use calculatorBudget Planner
Plan your monthly budget using the 50/30/20 rule. Track expenses, see savings rate, and find areas to cut back.
Use calculatorHealth & Lifestyle
6 calculators
BMI Calculator
Calculate your Body Mass Index from height and weight. See your BMI category, ideal weight range, and health risk assessment.
Use calculatorBMR Calculator
Calculate your Basal Metabolic Rate using the Mifflin-St Jeor equation. Find how many calories your body burns at rest.
Use calculatorCalorie Calculator
Calculate daily calorie needs based on age, gender, height, weight, and activity level. Get targets for weight loss, maintenance, and gain.
Use calculatorIdeal Weight Calculator
Calculate your ideal weight range based on height and gender using the Robinson formula. Set realistic health goals.
Use calculatorWater Intake Calculator
Calculate how many liters and glasses of water you should drink daily based on your weight and activity level.
Use calculatorSleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed by completing full cycles.
Use calculatorMath & Education
11 calculators
Percentage Calculator
Calculate percentages, percentage change, increase, and decrease. Solve "X% of Y" and "X is what % of Y" problems instantly.
Use calculatorAge Calculator
Calculate your exact age in years, months, weeks, days, hours, and minutes. Works for any birth date to any target date.
Use calculatorGPA Calculator
Calculate your Grade Point Average by entering courses, credit hours, and letter grades. Supports 4.0 scale for college and university.
Use calculatorUnit Converter
Convert between metric and imperial units for length, weight, temperature, area, and volume in one tool.
Use calculatorLength Converter
Convert cm to inches, meters to feet, km to miles, and more. Supports all metric and imperial length units.
Use calculatorWeight Converter
Convert kg to lbs, grams to ounces, stones to kilograms, and more. Instant metric to imperial weight conversion.
Use calculatorTemperature Converter
Convert Celsius to Fahrenheit, Fahrenheit to Celsius, and Kelvin. Includes formulas and common reference points.
Use calculatorArea Converter
Convert square meters to square feet, acres to hectares, and more. Useful for real estate, land, and construction projects.
Use calculatorVolume Converter
Convert liters to gallons, ml to cups, cubic meters to cubic feet, and more. Supports US and imperial volume units.
Use calculatorScientific Calculator
Free online scientific calculator with sin, cos, tan, log, ln, square root, exponents, and factorial. Works on any device.
Use calculatorTime Calculator
Calculate time differences between two dates or times. Add and subtract hours, minutes, and seconds. Precise to the second.
Use calculatorDeveloper Tools
9 calculators
JSON Formatter
Format, validate, minify, and auto-fix JSON online. Instant syntax error detection with line numbers and built-in search.
Use calculatorBase64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to plain text instantly. Supports UTF-8 and one-click copy.
Use calculatorJWT Decoder
Decode and inspect JSON Web Tokens online. View header, payload, claims, and expiration instantly.
Use calculatorUUID Generator
Generate random UUID v4 identifiers instantly. Copy single or bulk UUIDs for databases, APIs, and distributed systems.
Use calculatorTimestamp Converter
Convert Unix timestamps to human-readable dates and dates to timestamps. Supports seconds and milliseconds formats.
Use calculatorPassword Strength Checker
Test password strength in real time. See crack-time estimates, character requirements, and tips to create stronger passwords.
Use calculatorColor Converter
Convert colors between HEX, RGB, and HSL formats instantly. See live color preview and copy any format with one click.
Use calculatorColor Picker
Pick colors visually and get HEX, RGB, HSL, CMYK codes. Explore color harmonies, shades, and copy any format instantly.
Use calculatorCode Minifier
Minify JavaScript and CSS code to reduce file size. Remove whitespace, comments, and line breaks while preserving functionality.
Use calculatorComplete Calculator Collection
You’ll find 33 tools in total across Finance, Health, Math, and Developer. Each one opens in your browser; we don’t collect or save what you enter.