Lumens per watt to lumens per milliwatt
Type a value in lm/W to get it in lm/mW instantly.
0.1lm/mW
That's 1.67× as efficient as a fluorescent tube, while a modern LED is 1.2× better. An 800 lumen bulb at that efficiency would draw about 8 watts.
What it means
How efficient is that?
The 683 lm/W ceiling is for pure 555 nm green light. Any usable white light must spread across the spectrum, so about 250–350 lm/W is the practical limit.
The math
How to convert lm/W to lm/mW
To convert lumens per watt to lumens per milliwatt, multiply by 0.001.
Example: 100 lm/W × 0.001 = 0.1 lm/mW.
In the other direction, 1 lm/mW = 1,000 lm/W.
Every unit
Your efficacy in every unit
Tables
lm/W to lm/mW conversion table
| lm/W | lm/mW |
|---|---|
| 5 lm/W | 0.005 lm/mW |
| 10 lm/W | 0.01 lm/mW |
| 15 lm/W | 0.015 lm/mW |
| 25 lm/W | 0.025 lm/mW |
| 50 lm/W | 0.05 lm/mW |
| 75 lm/W | 0.075 lm/mW |
| 100 lm/W | 0.1 lm/mW |
| 150 lm/W | 0.15 lm/mW |
| 200 lm/W | 0.2 lm/mW |
| 300 lm/W | 0.3 lm/mW |
| 683 lm/W | 0.683 lm/mW |
lm/mW to lm/W conversion table
| lm/mW | lm/W |
|---|---|
| 5 lm/mW | 5,000 lm/W |
| 10 lm/mW | 10,000 lm/W |
| 15 lm/mW | 15,000 lm/W |
| 25 lm/mW | 25,000 lm/W |
| 50 lm/mW | 50,000 lm/W |
| 75 lm/mW | 75,000 lm/W |
| 100 lm/mW | 100,000 lm/W |
| 150 lm/mW | 150,000 lm/W |
| 200 lm/mW | 200,000 lm/W |
| 300 lm/mW | 300,000 lm/W |
| 683 lm/mW | 683,000 lm/W |
Quick answers
Quick answers
- How many lm/mW is 1 lm/W?
- 1 lm/W is 0.001 lm/mW.
- How many lm/mW is 10 lm/W?
- 10 lm/W is 0.01 lm/mW.
- How many lm/mW is 100 lm/W?
- 100 lm/W is 0.1 lm/mW.
The units
About these units
Lumens per watt (lm/W)
The standard measure of lighting efficiency.
Lumens per milliwatt (lm/mW)
For indicator LEDs and small sources.
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