Question 1

Which categories and units are supported?

Accepted Answer

Length (mm, cm, m, km, in, ft, yd, mi), weight (mg, g, kg, t, oz, lb), temperature (°C, °F, K), volume (mL, L, m³, tsp, tbsp, fl oz, cup, pt, qt, gal), area (mm², cm², m², km², ha, in², ft², ac), time (ms, s, min, h, d, wk), speed (m/s, km/h, mph, kn, ft/s), and data (B, KB, MB, GB, TB and binary KiB, MiB, GiB, TiB).

Question 2

Are the conversions accurate?

Accepted Answer

Yes. We use the internationally agreed conversion factors (e.g., 1 inch = 0.0254 m, 1 lb = 0.45359237 kg, °F to °C = (F − 32) × 5/9). Results are shown with up to 8 significant digits.

Question 3

What's the difference between KB and KiB for data?

Accepted Answer

KB (decimal) is 1,000 bytes — used by storage manufacturers and most APIs. KiB (binary) is 1,024 bytes — used by operating systems and file managers. The same applies to MB/MiB, GB/GiB, etc.

Question 4

Why does swapping change the values?

Accepted Answer

The swap button exchanges both the unit selectors and the values, so the input you were focused on stays meaningful. For example, swapping '1 m → 3.28 ft' gives you '3.28 ft → 1 m'.

Question 5

Is anything sent to a server?

Accepted Answer

No. All conversions happen entirely in your browser. Nothing leaves your device — no analytics on values, no network calls.

Unit Converter

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