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© Nutter Toolsnutter.tools
  1. Home
  2. Units & math
  3. GST calculator
Your files stay on your device

GST calculator

Add GST to a price that excludes it or pull GST back out of a price that already includes it, at any rate you enter.

This tool is in beta

Still being tested. If a result looks wrong, tell us.

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Enter an amount and a rate to split the tax out.

This is standard GST arithmetic, nothing more: it holds no country rate table and applies no slab rules, so you type the rate your invoice actually carries. Nothing is sent to a server; the amounts and the rate stay in this tab. Figures are not rounded to cents, so compare the last digits with your receipt's own rounding before you rely on them.

Price and rate

Direction
The base price before tax
Any rate you enter, no country table

Numbers stay within ±1,000,000,000,000. Rates run 0 to 1000 %.

More unit & math tools

  • Unit converter
  • Fraction calculator
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