Watts to Lumens

Wattage tells you energy use — lumens tell you brightness. Convert between them for any common bulb type.

Power (watts)

Bulb type

Custom efficacy (lm/W, optional)

Which wattage for what?
To replace a 60 W incandescent (≈800 lm), you only need a ≈7 W LED.

Rule of thumb: divide the old incandescent wattage by ≈8 to get LED watts — same brightness, a fraction of the energy.

💡 Brightness answer

Lumens output for your bulb type.

🔨 Replacement guide

Equivalent old-style incandescent wattage.

💰 Cost estimate

Yearly running cost at typical use.

📡 Side-by-side

All bulb types compared for the same watts.