VAT Calculator
Add or extract VAT at any rate.
Read the maths behind this tool: GST Calculation: Adding, Removing and Why Division Is Not Subtraction
How it works
Add or extract VAT at any rate. Enter your numbers and the result updates as you type — nothing is sent to a server.
Is this free?
Yes — no account, no ads, no limits.
How accurate is it?
It applies the standard formula shown on the page; rounding is to two decimals.