allfreecalculators.in is a free, single-page calculator suite designed to replace a dozen separate apps. It runs entirely in your browser, loads instantly, keeps working offline once opened, and never asks for an account. Switch between a Standard calculator for everyday arithmetic, a Scientific calculator for trigonometry and logarithms, a Programmer calculator for binary, octal, decimal and hexadecimal conversions, Finance tools for EMI, simple interest, compound interest and GST, Health tools for BMI and BMR, a Date calculator for age and day differences, and a full Unit Converter covering length, weight, temperature, area, volume, speed, time and digital storage.
Yes — every tool on this page is free, with no sign-up and no limits.
Yes. Because the entire app is a single self-contained page, it keeps working without an internet connection once it has loaded.
All calculations and history are stored only in your own browser's local storage. Nothing is sent to a server.