Free GST Calculator Online — 100% Free, No Hidden Costs
Looking for a completely free gst calculator? FlexyPdf's GST Calculator is 100% free with no hidden costs, no premium tiers, and no usage limits. Unlike other tools that restrict features behind paywalls or limit the number of free operations per day, our GST Calculator gives you full access to every feature without spending a penny. There is no trial period — the tool is free today and will remain free. All processing happens locally in your browser, which means we have no server costs to pass on to you. Whether you need to use GST Calculator once or a hundred times a day, it costs nothing.
How to Use GST Calculator
Enter Amount
Type the price amount — either the base price or the GST-inclusive price.
Select GST Rate
Choose from preset rates (3%, 5%, 12%, 18%, 28%) or enter a custom rate.
View Results
See the base price, GST amount, CGST/SGST split, IGST, and total amount.
Features
Add or Remove GST
Calculate GST to add on a base price, or extract GST from an inclusive price.
Indian GST Rates
Preset buttons for standard Indian GST rates: 3%, 5%, 12%, 18%, and 28%.
CGST/SGST/IGST Split
See the Central GST, State GST, and Integrated GST breakdowns.
Custom Rates
Enter any custom GST rate for countries or situations with non-standard rates.
Benefits of Using GST Calculator
Completely Free
Use GST Calculator without any cost, limits, or hidden fees. No premium plans needed.
No Installation
Works directly in your browser. No software downloads or plugins required.
100% Private
Your files and data are processed locally. Nothing is uploaded to external servers.
Works Everywhere
Compatible with Chrome, Firefox, Safari, Edge on desktop, tablet, and mobile.
No Sign-Up
Start using the tool immediately. No account creation or email verification.
Always Available
Access this tool 24/7 from anywhere in the world, on any device.
Frequently Asked Questions
Complete Your Calculators Workflow
These free tools work seamlessly with GST Calculator to handle every step of your workflow.