Unit Conversion is built by a small family team that got tired of converter sites buried in pop-ups, forced logins, and ads covering the answer. Our rule is simple: the tool first, always free, never interrupted.
Fast conversion tools for everyday life — cooking, travel, fitness, school, car care, and work — covering length, weight, volume, temperature, area, speed, data, time, pressure, energy, and power. Every tool explains how the math works, so you learn the mental shortcut while you convert.
All conversions are computed locally in your browser — nothing you type is sent to a server. Your recent conversions and preferences stay on your own device.
This site is actively maintained. We answer our email and read every piece of feedback — if a conversion factor looks off or a unit you need is missing, tell us and we'll fix it.