Unit Converter

Pick what you are measuring, type the value, get the answer with the factor it came from — and a backwards check, so you can see it is right.

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Conversion factors on Clirto come from exact definitions where they exist — the inch is exactly 2.54 cm and the pound is exactly 0.45359237 kg by international agreement — so the only rounding is in the display, and the page says how much. Last updated: October 13, 2026.