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Unit Converter
Length, weight, temperature, data and speed
Supported categories
Our converter covers the five most requested categories: length (mm, cm, m, km, in, ft, yd, mi), weight (mg, g, kg, t, oz, lb), temperature (°C, °F, K), data (bit, byte, KB, MB, GB, TB) and speed (m/s, km/h, mph, kn, ft/s). Conversions use precise factors according to the International System.
Metric to imperial
Most of the world uses the metric system, but the United States, the UK and a few others still use imperial units. Our tool converts automatically between the two systems — useful for recipes, travel, sports and international trade.
Frequently asked questions
Are conversions accurate?
Yes, we use official SI conversion factors. For example 1 inch = 25.4 mm exact, 1 pound = 0.45359237 kg exact.