Lumens to Watts Converter
Convert lumens to watts by bulb type
Lumens to Watts Reference
Approximate wattage equivalents by bulb type
| Lumens | Incandescent | CFL | LED |
|---|---|---|---|
| 450 | 40W | 9-13W | 4-5W |
| 800 | 60W | 13-18W | 6-8W |
| 1100 | 75W | 18-25W | 9-13W |
| 1600 | 100W | 23-30W | 16-20W |
| 2600 | 150W | 30-55W | 25-28W |
What is This Tool?
Energy converters translate between joules, calories, kilocalories, BTU, kilowatt-hours, and foot-pounds. These conversions bridge physics, nutrition, engineering, and utility billing contexts.
Formula
target = value x (source in joules) / (target in joules)
Base unit: Joules (J)
1 cal = 4.184 J, 1 BTU = 1055.06 J, 1 kWh = 3,600,000 JWorked Examples
1. BTU to Joules
Given: 100 BTU
1 BTU = 1055.06 J
100 x 1055.06 = 105,506 J
Result: 105,506 J
2. Joules to Calories
Given: 4,184 J
1 cal = 4.184 J
4184 / 4.184 = 1000 cal
Result: 1,000 calories
Frequently Asked Questions