Chrome Extension Popup

Calculate GST instantly in a single click

A beautiful, privacy-first calculator for adding and removing GST. View local calculation logs and Indian tax CGST / SGST splits instantly.

GST Calculator Pro
Popup Preview
Amount input
₹10,000.00 18% GST
Total GST Amount ₹1,800.00
CGST (9%) / SGST (9%) ₹900.00 / ₹900.00
Gross Total Amount ₹11,800.00

Built for Speed & Privacy

A comprehensive features breakdown of why GST Calculator Pro is the ultimate toolbar tool for calculations.

100% Secure & Offline

Your calculations and data remain stored inside your browser's local sandbox memory. We never transmit data to servers or track your invoices.

Central / State Splits

Optimized for Indian businesses. Displays standard CGST (50%) and SGST (50%) structures dynamically for quick book keeping entries.

Copy Summaries

Copy specific output figures with a single click, or extract a fully itemized markdown invoice breakdown summary for immediate pasting.

Try the live preview widget

Experience the identical Chrome Extension workflow and responsive calculations directly on the web page before launching the unpacked file in Chrome.

  • Supports custom percentages and standard preset values.
  • Live dynamic recalculations triggered instantly as you type.
  • Reversible mathematics (Add GST / Remove GST modes supported).
%
Base Amount ₹1,000.00
Total GST (CGST + SGST) ₹180.00
CGST (50%) ₹90.00
SGST (50%) ₹90.00
Gross Total Amount ₹1,180.00

Get in Touch

For questions, support requests, bug submissions, or licensing queries, drop us an email. Our team responds within 24 hours.

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