Every calc.
One tap. ✨
Mortgage, BMI, tax, EMI, currency, percentage, and 100+ more.
Built different. Free forever.
The hits.
Most-used calculators by real humans this week.
Monthly payment, total interest, and full amortization schedule.
Personal, auto, or any-purpose loan payment estimator.
Indian-style equated monthly installment for any loan.
Mutual fund SIP returns calculator with goal planning.
See how your savings grow over time with compounding.
Interest on principal only: SI = P × R × T.
CTC to in-hand take-home: EPF, PT & both tax regimes.
Old vs New regime with state Professional Tax & HRA, across all 16 states.
Body Mass Index with metric and imperial units.
Daily calorie burn based on activity level.
Estimate your due date and pregnancy milestones.
Daily calories for weight loss, maintenance, or gain.
What is X% of Y, percentage change, increase/decrease.
Convert CGPA to percentage & back: CBSE, VTU, Anna, Mumbai.
Add, subtract, multiply, divide fractions and simplify.
Weighted GPA on the 4.0 scale from your courses and credit hours.
Length, weight, volume, temperature, and area conversions.
240+ currency pairs with year-ago and 5-year rates.
Convert times between world zones (EST, IST, GMT, PST) with DST.
Exact age in years, months, days, hours, and minutes.
Trip fuel cost from distance, mileage and fuel price.
What's the vibe?
Pick what you're trying to do. We'll send you to the right tool.
Buying a home?
Estimate mortgage, compare loan terms, plan down payment.
Tracking fitness?
BMI, calorie need, and macros to hit your goals.
Investing in your future?
See how compound interest and SIP returns build wealth.
Filing taxes?
Compare old vs new regime by Indian state.
Browse the whole library
Everything organized. Nothing buried.
Math
Percentage, fraction, scientific, statistics, and probability.
- 🍽️ Tip Calculator
- 🏷️ Discount Calculator
- ％ Percentage Calculator
- 🎓 CGPA to Percentage
- ½ Fraction Calculator
Construction
Concrete, paint, tile, roofing, wallpaper, and material estimators.
View all construction →
No popups. No signups.
Just calculations.
Most calculator sites are bloated with ads and signup walls. We built the opposite.
⚡ Sub-second.
Static pages on a global CDN. Calculators run in your browser. Zero API calls. Zero loading screens.
🎯 Verified math.
Every formula cites its authoritative source (IRS, USDA, central banks). Tested against known outputs.
🔒 Private af.
Your numbers never leave your browser. No accounts. No personal-data tracking. Real privacy, not the buzzword.
Quick answers.
Are all calculators really free?
How accurate is the math?
Is my data private?
Does it work on phones?
Can I embed a calculator on my site?
How do I request a new calculator?
Still curious? Hit us up →
Missing a calc? We'll build it.
New calculators shipping every 3 days based on what real people request. Drop a note. We usually ship within 7 days.