Everyday calculations

Rule of three

Solve direct proportions quickly.

Local and private calculation

How it works

Solve direct proportions quickly.

Example

For guidance only. Verify rates, taxes and terms before making business decisions.

Local and private calculation

Prices, sales and costs are not sent to the server.

Frequently asked questions

Is the result exact?+

The formula is exact for the values entered. Platform results are estimates because extra fees, taxes or category-specific charges may apply.

Are my figures saved?+

No. Calculations run locally. Only calculations you deliberately save remain in your browser storage.

Does this replace an accountant?+

No. It helps compare scenarios, but tax and accounting obligations should be verified with a professional and official sources.