Skip to content
Calculator Tools
Lighting Calculators

Watts to Lumens Converter

Convert bulb wattage to lumens and back, across LED, CFL, halogen and incandescent.

Enter values

Results update as you type.

Result

Light output

840 lumens

Equivalent LED wattage
9.33 W
Equivalent CFL wattage
14 W
Equivalent incandescent
60 W
Efficacy used
14 lm/W

About the Watts to Lumens Converter

Convert bulb wattage to lumens and back, across LED, CFL, halogen and incandescent.

Also known as: lumens to watts, led equivalent wattage, bulb brightness converter, watt to lumen chart.

How to use this calculator

  1. Enter convert, bulb type.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

lumens = watts × efficacy for that technology

Worked example

Using the values pre-filled in the calculator above:

  • Convert: Watts to lumens
  • Wattage = 60
  • Bulb type: Incandescent (14 lm/W)

the calculator returns:

  • Light output: 840 lumens
  • Equivalent LED wattage: 9.33 W
  • Equivalent CFL wattage: 14 W
  • Equivalent incandescent: 60 W