Convert Lumens to Gigalumens
Convert Lumens (lm) to Gigalumens (Glm) instantly and accurately.
Conversion Formula
Glm = lm × 1.000000000e-9
About Lumens
The lumen (lm) is the SI derived unit of luminous flux, equal to 1 cd·sr. A standard wax candle emits approximately 12 lm total; a 40 W incandescent bulb about 450 lm; the common 800 lm LED lamp is the direct replacement for a 60 W incandescent. Defined since 2019 SI by fixing K_cd = 683 lm/W at 540 THz. 1 lm = 1 cd·sr.
About Gigalumens
The gigalumen (Glm) equals 10⁹ lm. The scale for very large lighting installations and for theoretical comparisons: a large airport apron illuminated to 30 lx over 1 km² would require approximately 30 Glm of total installed luminous flux. The full-disk luminous flux of the Sun is approximately 3.6 × 10²⁸ lm. 1 Glm = 10⁹ lm.
Quick Reference Table
| Lumens (lm) | Gigalumens (Glm) |
|---|---|
| 1 lm | 1 × 10-9 Glm |
| 2 lm | 2 × 10-9 Glm |
| 5 lm | 5 × 10-9 Glm |
| 10 lm | 1 × 10-8 Glm |
| 25 lm | 2.5 × 10-8 Glm |
| 50 lm | 5 × 10-8 Glm |
| 100 lm | 1 × 10-7 Glm |