| Formula | Calculator | Reverse units |
|---|---|---|
| 1 joule (quantity of light) = 683 candela second steradian | Factors for candela second steradian | |
| 1 joule (quantity of light) = 0.1897222 lumen hour | Factors for lumen hour | |
| 1 joule (quantity of light) = 683 lumen second | Factors for lumen second | |
| 1 joule (quantity of light) = 683 lux second square meter | Factors for lux second square meter | |
| 1 joule (quantity of light) = 683 talbot | Factors for talbot | |
| 1 joule (quantity of light) = 0.9970803 wattsecond (green light , 100% efficiency) | Factors for wattsecond (green light , 100% efficiency) | |
| 1 joule (quantity of light) = 1 wattsecond (light at 540 THz) | Factors for wattsecond (light at 540 THz) | |
| 1 joule (quantity of light) = 1.004412 wattsecond (light at 5550 angstrom) | Factors for wattsecond (light at 5550 angstrom) |