| Formula | Calculator | Reverse units |
|---|---|---|
| 1 lumen = 1 candela steradian | Show conversions from candela steradian | |
| 1 lumen = 1 lux square meter | Show conversions from lux square meter | |
| 1 lumen = 0.001464129 watt (at 540 THz) | Show conversions from watt (at 540 THz) | |
| 1 lumen = 0.001470588 watt (at 5550 angstrom) | Show conversions from watt (at 5550 angstrom) | |
| 1 lumen = 0.001459854 watt (green light , 100% efficiency) | Show conversions from watt (green light , 100% efficiency) |