✦ Fasturious free tools

Free Calculators
for Everyday Life

Health, fitness, finance, and life tools — get instant accurate results with no sign-up, no ads, and no cost. Works in every country and currency.

6Free tools
50+Currencies
100%Free forever
0Sign-ups needed
❤️ Health & fitness tools
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BMI Calculator
Find out if your weight is healthy for your height. Shows your BMI category, healthy weight range, and personalised advice — with an animated scale indicator.
Health
Metric & Imperial Male & Female
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Calorie Calculator
Get your exact daily calorie target to lose weight, maintain, or build muscle. Uses the Mifflin-St Jeor formula. Includes protein, carbs, and fat macro breakdown.
Fitness
5 activity levels Macro split
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Ideal Weight Calculator
Find your ideal weight range using 4 scientific formulas — Robinson, Miller, Devine, and Hamwi — adjusted for your body frame size (small, medium, or large).
Health
4 formulas Body frame
💡 Life & finance tools
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Age Calculator
Your exact age in years, months, days, hours, and minutes. Also shows heartbeats lived, hours slept, days until your next birthday, zodiac sign, and birth generation.
Life
Fun facts Zodiac sign
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Loan & EMI Calculator
Calculate your monthly payment, total interest, and full amortization schedule for any home loan, car loan, or personal loan — in any currency worldwide.
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Finance
50+ currencies Amortization table Monthly & yearly view Home, Car, Personal
⏳ Coming soon
Coming soon
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Sleep Calculator
Find the ideal time to wake up or go to sleep based on natural 90-minute sleep cycles. Never wake up groggy again.
Coming soon
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Water Intake Calculator
How much water should you drink per day? Get your personalised hydration target based on weight, activity level, and climate.
Coming soon
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Zakat Calculator
Calculate your annual Zakat on savings, gold, silver, business assets, and investments. Based on current Nisab values.
New tools added every week
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Free Online Calculators for Everyone

Fasturious offers a growing collection of free online calculators and tools for everyday use — covering health, fitness, finance, and life. Every tool is completely free, works instantly in your browser without any sign-up, and is designed to give you accurate, actionable results.

Our tools are used by people worldwide — from students and professionals in the US, UK, and Europe, to users across South Asia, the Middle East, Africa, and beyond. All financial tools support 50+ global currencies, and all health tools support both metric and imperial units.

Our Free Tools

  • BMI Calculator — Calculate your Body Mass Index and find out if you are underweight, normal weight, overweight, or obese. Supports metric (kg/cm) and imperial (lbs/ft).
  • Calorie Calculator — Find your daily calorie target using the Mifflin-St Jeor formula. Covers weight loss, maintenance, and muscle gain goals with a full macro breakdown.
  • Ideal Weight Calculator — Find your ideal weight range using the Robinson, Miller, Devine, and Hamwi formulas, adjusted for your body frame size.
  • Age Calculator — Find your exact age in years, months, days, hours, and minutes. Includes your zodiac sign, birth generation, days until your next birthday, and fun life facts.
  • Loan & EMI Calculator — Calculate monthly loan payments for home loans, car loans, and personal loans. Shows full amortization schedule in any of 50+ currencies.

Frequently Asked Questions

Yes — all tools on Fasturious are completely free to use. There is no sign-up, no account, no subscription, and no hidden charges. They work directly in your browser on any device.

Our calculators use the same scientific formulas used by doctors, nutritionists, and financial institutions worldwide. The BMI and calorie calculators use WHO-standard and Mifflin-St Jeor formulas respectively. The loan calculator uses the standard amortization formula used by all banks. Results are estimates — for medical or financial decisions, always consult a qualified professional.

Yes — all tools are fully responsive and work on smartphones, tablets, and desktop computers. They are designed to be fast-loading and easy to use on any screen size.

The Loan & EMI Calculator supports over 50 currencies including USD, GBP, EUR, CAD, AUD, INR, PKR, AED, SAR, JPY, KRW, NGN, KES, BRL, and many more. Each currency automatically loads realistic default loan amounts and interest rates for that country.