Percent of maximum to lumens per watt
Type a value in % to get it in lm/W instantly.
683lm/W
That's about the same as the theoretical maximum. An 800 lumen bulb at that efficiency would draw about 1.171 watts.
Convert the other way: lm/W to %
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 % to lm/W
To convert percent of maximum to lumens per watt, multiply by 6.83.
Example: 100 % × 6.83 = 683 lm/W.
In the other direction, 1 lm/W = 0.146413 %.
Every unit
Your efficacy in every unit
Tables
% to lm/W conversion table
| % | lm/W |
|---|---|
| 5 % | 34.15 lm/W |
| 10 % | 68.3 lm/W |
| 15 % | 102.45 lm/W |
| 25 % | 170.75 lm/W |
| 50 % | 341.5 lm/W |
| 75 % | 512.25 lm/W |
| 100 % | 683 lm/W |
| 150 % | 1,024.5 lm/W |
| 200 % | 1,366 lm/W |
| 300 % | 2,049 lm/W |
| 683 % | 4,664.89 lm/W |
lm/W to % conversion table
| lm/W | % |
|---|---|
| 5 lm/W | 0.732064 % |
| 10 lm/W | 1.46413 % |
| 15 lm/W | 2.19619 % |
| 25 lm/W | 3.66032 % |
| 50 lm/W | 7.32064 % |
| 75 lm/W | 10.981 % |
| 100 lm/W | 14.6413 % |
| 150 lm/W | 21.9619 % |
| 200 lm/W | 29.2826 % |
| 300 lm/W | 43.9239 % |
| 683 lm/W | 100 % |
Quick answers
Quick answers
- How many lm/W is 1 %?
- 1 % is 6.83 lm/W.
- How many lm/W is 10 %?
- 10 % is 68.3 lm/W.
- How many lm/W is 100 %?
- 100 % is 683 lm/W.
The units
About these units
Percent of maximum (%)
Against the theoretical ceiling of 683 lm/W.
Lumens per watt (lm/W)
The standard measure of lighting efficiency.
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