Free · No sign-up · Every step shown
265 free calculators that show their working
Money, tax, health, maths and everyday life. Get the answer, see exactly how it was worked out, and compare it side by side.
Popular:PercentageBMIAgeGPAZakat
Discount CalculatorRs 10,000 with 25% off
You pay
Rs 7,500 you save Rs 2,500
How it's worked out
- Discount
10,000 × 25%Rs 2,500 - Price to pay
10,000 − 2,500Rs 7,500

Your favourites
Starred on their pages and kept in this browser only.
Browse by category
- Money34 calculators
- Tax and salary12 calculators
- Health37 calculators
- Math49 calculators
- Science12 calculators
- Date and time19 calculators
- Conversion20 calculators
- Technology11 calculators
- Car and fuel7 calculators
- Home and construction25 calculators
- Education17 calculators
- Islamic19 calculators
- Sports and games3 calculators
Pick up where you left off
Popular calculators
The ones people use most, from take-home pay to BMI.
- Percentage CalculatorMath
- Age CalculatorDate and time
- BMI CalculatorHealth
- Scientific CalculatorMath
- Pakistan Salary Tax Calculator 2026-27Tax and salary
- GPA CalculatorEducation
- Discount CalculatorMoney
- Calorie CalculatorHealth
- Date Difference CalculatorDate and time
- Unit ConverterConversion
- Zakat CalculatorIslamic
- UK Income Tax Calculator 2026/27Tax and salary
Why people use CalculatorDex
- See how it's worked outEvery result lists each step with your numbers in it, so you can check it or explain it to someone else.
- Compare side by sideTry two or three sets of numbers at once, like two job offers, and see the difference straight away.
- Your country's rulesTax, salary and end-of-service tools for Pakistan, the UAE, Saudi Arabia, India, the UK and the US, with the date the rules were last checked.
- Private and freeNo sign-up. Your numbers are saved in your own browser, and a link shares them only when you choose.