About

All In One Converter Tool is a free hub of fast, accurate conversion calculators, run by DixonAppStudio LLC (Elgin, South Carolina) — built for students, engineers, developers, and everyday users who just need the answer.

Every tool runs instantly in your browser, with no signup. The site is funded by Google AdSense ads, and the same converters are in our free All-in-1 Converter Calculator app for Android and iPhone. Suggest a converter, report a bug, or say hi via the contact page.

What is on the site

Converters for length, weight, temperature, volume, area, speed, data storage, energy, pressure, angle, number bases, color codes and currency, plus printable conversion charts and short guides that explain the math behind each unit. Converter pages explain the formula behind the result, so you can check the answer by hand.

How the numbers are checked

Conversion factors use the exact definitions of the International System of Units (SI) — for example, one inch is exactly 2.54 cm and one pound is exactly 0.45359237 kg. Results are calculated in full precision and only rounded for display. Currency figures are static reference rates with their last-updated date shown on the page; use a bank or licensed exchange service for live transactions.

Corrections and contact

If a result looks wrong, email support@dixonappstudio.com with the converter and the values you entered — we check and fix reports, usually within two business days. How advertising cookies are used is explained in the privacy policy.