Free tools, built for India.

20 fast, accurate calculators and utilities — no sign-up, no spam, no data collection. Updated for FY 2026-27 tax rules and current GST rates.

💰 Finance & Tax

EMI Calculator

Monthly EMI, total interest and payment for home, car & personal loans.

SIP Calculator

Project the future value of your monthly mutual-fund SIP investments.

GST Calculator

Add or remove GST at current 5%, 18% & 40% slabs, with CGST/SGST split.

Income Tax Calculator

FY 2026-27 tax under new vs old regime — see which saves you more.

FD Calculator

Maturity value of fixed deposits with quarterly compounding.

RD Calculator

Recurring deposit maturity amount, the way banks actually calculate it.

PPF Calculator

15-year PPF corpus with tax-free interest breakdown.

Loan Eligibility Calculator

How much loan you may qualify for, based on income & FOIR.

🧰 Everyday Utilities

Age Calculator

Exact age in years, months & days — plus next-birthday countdown.

Date Calculator

Days between dates, weekday counts, add or subtract days.

Percentage Calculator

% of a number, X as % of Y, and percentage change — all in one.

BMI Calculator

With Asian-Indian cutoffs and your healthy weight range.

Word Counter

Words, characters, reading time and keyword frequency.

Case Converter

UPPER, lower, Title, camelCase, snake_case and more.

QR Code Generator

Links, UPI payments, WiFi — no watermark, never expires.

Password Generator

Cryptographically secure, generated on your device.

Unit Converter

Length, weight, temperature, area, volume, speed & data.

Image Compressor

Shrink JPG, PNG & WebP in your browser — nothing uploaded.

Typing Speed Test

Measure your WPM and accuracy with live feedback.

Invoice Generator

Free GST invoice with CGST/SGST or IGST — download as PDF.

Why WiserFool.in?

Every tool here is built for Indian users first — rupee formatting, Indian tax slabs, GST rates after the 2025 rationalisation, UPI QR codes, and the deposit rules Indian banks actually follow. Each tool runs entirely in your browser: nothing you type is sent to any server, stored, or shared.

All tools are for information and education — see our disclaimer. WiserFool.in is part of WiserFool, an independent software studio by Khanjan Kavani, Surat. Found a bug or want a new tool? Tell us — most requests ship within days.