Convert Any Unit Instantly

About ConvertAll

ConvertAll is a fast, free unit converter that works entirely in your browser — no installation, no account, no tracking. Just type a value and get an instant result.

What can I convert?

We cover the most common everyday units: weight (kg, lbs, oz, grams, stones), length (cm, inches, feet, meters, miles, km), temperature (°C, °F, Kelvin), volume (liters, gallons, ml, cups), speed (mph, km/h), and area (sq ft, sq m, acres).

How accurate are the results?

All conversions use exact or high-precision factors (up to 6 decimal places) and avoid floating-point artifacts by rounding with toFixed(6). Temperature conversions use the exact offset formulas, not approximations.