| Formula | Calculator | Reverse units |
|---|---|---|
| 1 wattsecond (green light , 100% efficiency) = 685 candela second steradian | Factors for candela second steradian | |
| 1 wattsecond (green light , 100% efficiency) = 1.002928 joule (quantity of light) | Factors for joule (quantity of light) | |
| 1 wattsecond (green light , 100% efficiency) = 0.1902778 lumen hour | Factors for lumen hour | |
| 1 wattsecond (green light , 100% efficiency) = 685 lumen second | Factors for lumen second | |
| 1 wattsecond (green light , 100% efficiency) = 685 lux second square meter | Factors for lux second square meter | |
| 1 wattsecond (green light , 100% efficiency) = 685 talbot | Factors for talbot |