GST Calculator
Calculator ToolsAdd or remove GST — CGST, SGST & IGST split
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History
All history →GST Calculator — at a glance
Work out GST on a price in seconds — add it to a base price or take it out of a final price.
How to use it — step by step
An amount, the GST slab and whether the amount already includes GST.
Enter your numbers
Fill in the fields — sensible example values are already filled in.
Pick your options
Choose any dropdowns or switches that apply to your case.
Calculate GST
Press the button. The result is created instantly on your device.
Read the answer
The main answer is shown big at the top, with details below it.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
How do I remove GST from a price?+
Divide the GST-inclusive price by (1 + GST%). For 18%, divide by 1.18.
What is the difference between CGST, SGST and IGST?+
CGST and SGST are the central and state shares on in-state sales. IGST is charged on inter-state sales.
Are the slab rates current?+
The slabs listed are the commonly used ones. Always confirm the rate that applies to your goods or service.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.