57 Calculators · Free
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Free calculators for health, money, school maths, dates and more. Filter by category, then open one to see the formula and every step behind its result.
All calculators
57 calculators
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- PrivateRuns on your device
- 12Languages
- 57 calculators10 · Calculator categories
Browse by category
Education
GPA, marks, exam scoring and school maths
19 calculatorsCareer & Money
Experience, income and everyday money
8 calculatorsDate & Age
Age gaps, durations and date intervals
5 calculatorsLove & Friendship
Compatibility and friendship scores
6 calculatorsGaming
Ratings, squads and upgrade planning
8 calculatorsSpecialized
Traditional and technical systems
3 calculatorsHealth & Fitness
Body fat and body composition, with the method shown
4 calculatorsHome & Garden
Garden beds, soil, water and fertilizer
1 calculatorShipping & Freight
Cargo volume, CBM and chargeable weight
1 calculatorMaterials & DIY
How much to buy and what it will weigh
2 calculatorsRecently added calculators
Every calculator, by category
Grouped by what they are for. Each link opens the calculator itself.
Education
- Percentage Calculator for Marks
- Grade Calculator
- Final Grade Calculator
- UK University Grade Calculator
- Prime Factorization Calculator
- Percentage Calculator
- GCD and LCM Calculator
- Grade Average Calculator
- Average Calculator
- Fraction Calculator
- Ratio Calculator
- Rounding Calculator
- Zeros Calculator
- VIT CGPA Calculator
- VIT GPA Calculator
- SRM CGPA Calculator
- JEE Advanced Score Calculator
- Attendance Calculator
- Grade Curve Calculator
Not a calculation?
File converters, text and data utilities and calendar tools — the jobs that are not arithmetic. They run in your browser rather than on a server.
Frequently asked questions
Are these calculators really free?
Yes. Every calculator here is free to use, with no account, no limit on how often you use it and nothing to install.
Do I need to create an account?
No. There is no sign-up and no email address is asked for anywhere on the site.
Are the results accurate?
Each calculator shows the inputs, the formula and every step between, so you can check the arithmetic rather than trust it. Where a result depends on a grading scale, tax rate or game formula, the page names the rule set it is applying.
Can I use these calculators on my phone?
Yes. Every calculator is built for small screens as well as desktops, works by keyboard and follows your device in light or dark.
Is anything I type sent to a server?
No. The calculators run in JavaScript in your own browser, so the values you enter stay on your device and are never transmitted or stored.