25 fast, ad-free tools I've built and use day-to-day — most run entirely in your browser.
Monthly EMI, total interest and a full amortization schedule.
Future value of a monthly SIP, with optional annual step-up.
Add or remove GST with CGST / SGST / IGST split.
% of a number, % change, discounts — with formulas.
Exact age in years, months and days, plus next birthday.
Length, weight, temperature, area, volume, speed and data.