GreatCalc is a free library of online calculators in Arabic and English. It brings together everyday tools such as dates, loans, health and units with specialist ones for medicine, chemistry, physics and engineering.
What you will find
- form calculators in ten categories, each with the formula, a worked example and answers to common questions;
- full keypad calculators (standard, scientific and engineering) that work from the keyboard, open in their own window and install as an offline app;
- every page in both Arabic and English.
How we build them
- each formula is written down on the page so you can check it;
- each calculator has automated tests with known answers;
- all calculations run in your browser, so your numbers stay private.
Found a mistake?
If you spot a wrong result, a unit problem or a poor translation, please tell us on the Contact Us page. Corrections are welcome and we read every message.