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Luminous Flux converter

gigalumen to petalumen

Convert gigalumen (Glm) to petalumen (Plm). Use an editable luminous flux converter, conversion formula, and reference table.

0.000001

1 Glm = 0.000001 Plm

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Conversion formula

Plm = Glm × 0.000001

One gigalumen equals 0.000001 petalumen. Multiply your value in gigalumen by this factor to get petalumen. For the reverse conversion, divide by the same factor.

Worked example

To convert 5 gigalumen:
5 × 0.000001 = 0.000005 Plm

Conversion table

gigalumen (Glm)petalumen (Plm)
0.011e-8
0.11e-7
10.000001
20.000002
50.000005
100.00001
250.000025
500.00005
1000.0001
10000.001

About these measurements

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

The base reference used here is the lumen. One gigalumen is 1,000,000,000 base units; one petalumen is 1e+15 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 Glm to Plm?

Multiply the quantity in Glm by 0.000001. You can also type the value into the converter above.

Can I reverse the conversion?

Yes. Use the swap button or open the petalumen to gigalumen 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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