GST Calculator (India)
Estimate GST and the total for an amount before GST.
Calculations run in this browser. Values are not submitted to the server.
Result
Formula and assumptions
GST = amount × rate ÷ 100; total = amount + GST. Choose the applicable rate yourself.
Example values are shown in the input placeholders. Results use browser number precision unless the tool uses exact integer arithmetic. Check units and assumptions before using a result.