Free tools
Twenty tools, zero signup
GST, finance, converters, generators — every calculator and utility we ship, on the same fast, private stack as the rest of the site. Runs entirely in your browser where it can.
GST Calculator
Calculate GST on any amount — inclusive or exclusive, 5% / 12% / 18% / 28%.
GST Number Search
Verify a 15-digit GSTIN format and decode the state, PAN, and check digit.
GST Search by PAN
Enter a PAN and get every valid GSTIN pattern that PAN could hold, across states.
ROI Calculator
Compare returns across investments — absolute ROI plus annualised (CAGR).
CAGR Calculator
Compound annual growth rate on any single-lump investment or metric.
EBITDA Calculator
Earnings before interest, tax, depreciation & amortisation — plus margin.
EMI Calculator
Monthly instalment for any loan — principal, rate, tenure.
SIP Calculator
Future value of a monthly SIP — expected return, tenure, monthly amount.
FD Calculator
Fixed-deposit maturity value — quarterly-compounded, matches bank statements.
RD Calculator
Recurring deposit maturity value from monthly instalments.
Income Tax Calculator
India new-regime slab tax with rebate under Section 87A.
HRA Calculator
HRA exemption under section 10(13A) — the minimum of the three rules.
Salary Calculator
CTC to take-home — PF, professional tax, and new-regime income tax.
Loan Calculator
Full amortisation — EMI, principal vs interest, outstanding balance per month.
Age Calculator
Exact age in years, months, days — plus days until your next birthday.
Percentage Calculator
Four calculations in one: X of Y, X is what % of Y, % increase, % decrease.
Currency Converter
Quick reference conversion between major currencies (indicative rates).
Unit Converter
Length, weight, temperature, area, volume, time — pick two units, done.
QR Code Generator
Generate a QR code for any URL or text — download PNG or SVG.
Invoice Generator
Fill in the form, print a clean PDF-ready invoice — GST optional.