Basic Calculator

Basic Calculator

11 tools in this category

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Quick answer

Everyday calculators for the arithmetic that comes up regularly - working out a percentage, and calculating Zakat.

Key facts

  • Percentage and Zakat calculators
  • Shows the working, not just the answer
  • Runs entirely in your browser
  • Free, no account needed
  • Usable on a phone

About these tools

This is a small set of calculators for common everyday sums. The percentage calculator covers the usual variants - a percentage of a number, what percentage one number is of another, and percentage increase or decrease. The Zakat calculator works out the annual obligation on qualifying assets.

How to choose

Open the calculator you need and enter your figures. Both show how the answer was reached, so you can check the working rather than take the number on trust.

Frequently asked questions

How do I calculate a percentage increase?

Subtract the original value from the new one, divide by the original, and multiply by 100. The percentage calculator does this for you and shows each step.

What does the Zakat calculator include?

It totals the qualifying assets you enter and applies the standard rate to the amount above the threshold. Rulings differ between schools of thought, so treat the result as a starting point and check it against the guidance you follow.

Are my figures saved?

No. Everything is calculated in your browser and nothing is sent anywhere.