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Luminous Intensity Converter

Convert candela, lumen per steradian, and historical candle units — instantly.

Free luminous intensity converter. Convert the international candle (candela), lumen per steradian, and historical candle standards with exact factors. Use the express converter for any unit pair, or open a quick conversion below.

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1 candle (international) = 1 lumen per steradian

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Hand-picked pairs with dedicated converter pages — open one to convert instantly.

Browse all luminous intensity units

Pick any unit to open a two-way conversion. The international candle is synonymous with the candela — the SI unit of luminous intensity.