Convert Lumens to Millilumens
Input the number of lumens you want to convert to millilumens.
How to Convert Lumens to Millilumens
The lumen and millilumen are both units of luminous flux. By definition, 1 millilumen equals exactly 1000000 lumens. This means to convert lumens to millilumens, you divide by 1000000.
Formula
Step-by-Step Example
Convert 5 lm to millilumens:
We need to convert lumens to millilumens
Since 1 mlm = 1000000 lm, divide by 1000000
5 ÷ 1000000 = 5e-6
5 lm = 5e-6 mlm
Lumen to Millilumen Conversion Table
Quick reference table for common lumen to millilumen conversions. Click any value for detailed calculation.
| Lumens (lm) | Millilumens (mlm) |
|---|---|
| 0.1 lm | 1e-7 mlm |
| 0.5 lm | 5e-7 mlm |
| 1 lm | 1e-6 mlm |
| 2 lm | 2e-6 mlm |
| 5 lm | 5e-6 mlm |
| 10 lm | 1e-5 mlm |
| 25 lm | 2.5e-5 mlm |
| 50 lm | 5e-5 mlm |
| 100 lm | 0.0001 mlm |
About These Units
Lumen (lm)
The lumen (lm) is the SI unit of luminous flux, measuring total visible light output from a source. Common bulb outputs: 40W incandescent ≈ 450 lm, 60W equivalent LED ≈ 800 lm, 100W equivalent ≈ 1,600 lm. Projector: 3,000-10,000 lm. One lumen = one candela × one steradian.
Millilumen (mlm)
A millilumen (mlm) equals 0.001 lumens. Used for very dim sources: indicator LEDs (1-20 mlm), phosphorescent materials, watch dial luminescence, and fiber optic output measurements. Useful for specifying minimum detectable light levels in optical sensors.
Frequently Asked Questions
How do I convert lumens to millilumens?
To convert lumens to millilumens, divide the value by 1000000. For example, 10 lm = 1e-5 mlm.
How many millilumens are in 1 lumen?
1 lumen equals 1e-6 millilumens.
What is the formula for lumens to millilumens?
The formula is: mlm = lm ÷ 1000000.