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Luminous Flux converter

lumen to kilolumen

Convert lumen (lm) to kilolumen (klm). Use an editable luminous flux converter, conversion formula, and reference table.

0.001

1 lm = 0.001 klm

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Conversion formula

klm = lm × 0.001

One lumen equals 0.001 kilolumen. Multiply your value in lumen by this factor to get kilolumen. For the reverse conversion, divide by the same factor.

Worked example

To convert 5 lumen:
5 × 0.001 = 0.005 klm

Conversion table

lumen (lm)kilolumen (klm)
0.010.00001
0.10.0001
10.001
20.002
50.005
100.01
250.025
500.05
1000.1
10001

About these measurements

Luminous flux measures the visible-light output weighted by human visual sensitivity.

The base reference used here is the lumen. One lumen is 1 base units; one kilolumen is 1,000 base units.

Important distinctions

Lumens measure light output; lux measures illumination per unit area.

Precision

The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.

Common questions

How do I convert lm to klm?

Multiply the quantity in lm by 0.001. You can also type the value into the converter above.

Can I reverse the conversion?

Yes. Use the swap button or open the kilolumen to lumen converter.

Reference

NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.

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