How to Use GST Calculator

Follow these quick and easy steps to use our free online GST Calculator directly in your browser:

Enter Amount

Type the base monetary amount in rupees or your local currency.

Select GST Rate

Choose a standard GST slab (0%, 5%, 12%, 18%, 28%) or enter a custom rate.

Choose Calculation Type

Select 'Exclusive' to add GST or 'Inclusive' to extract GST from the total.

View & Copy

Get the exact total, tax amount, and CGST/SGST/IGST breakdown with 1-click copy.

Features & Capabilities

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Instant Calculation

Calculates total amount, base price, and tax splits instantly as you type.

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CGST & SGST Split

Automatically calculates 50% CGST and 50% SGST for intra-state tax reporting.

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Custom GST Rates

Supports custom percentage rates in addition to official GST slabs.

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100% Private

Runs entirely in your browser sandbox without sending financial data to servers.

Privacy & Security Guarantee

Your privacy and document security are our highest priority. GST Calculator executes all processing, calculations, and conversions entirely on your client device using local browser memory. Your files, inputs, and personal parameters are never uploaded to any remote server or stored in any database.

Frequently Asked Questions

What is the difference between GST inclusive and exclusive?

GST Inclusive means the tax is already added to the total amount. GST Exclusive means tax needs to be added onto the base price.

How are CGST and SGST calculated?

For intra-state transactions in India, the total GST is split equally: 50% goes to Central GST (CGST) and 50% to State GST (SGST).

Can I use custom GST percentage rates?

Yes, select 'Custom...' in the rate dropdown to input any custom tax percentage like 14% or 0.25%.

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