Convert Lumens per square inch to Kilolux
Convert Lumens per square inch (lm/in²) to Kilolux (klx) instantly and accurately.
Conversion Formula
klx = lm/in² × 1.5500031
About Lumens per square inch
The lumen per square inch (lm/in²) equals 1/0.00064516 lx ≈ 1 550 lx. Used in US optics and LED backlight datasheets when specifying output over small aperture areas. Rare in general lighting but found in US optical engineering catalogs and LCD backlight specifications. 1 lm/in² = 1/0.00064516 lx.
About Kilolux
The kilolux (klx) equals 1 000 lx. Outdoor daytime scale: overcast sky ~10-20 klx; direct mid-latitude sunshine at noon ~80-100 klx. Required for fine inspection work, surgery, and color-critical print evaluation (ISO 3664: 2 klx). Also the range for plant-growth LED systems at canopy level. 1 klx = 10³ lx.
Quick Reference Table
| Lumens per square inch (lm/in²) | Kilolux (klx) |
|---|---|
| 1 lm/in² | 1.55 klx |
| 2 lm/in² | 3.10001 klx |
| 5 lm/in² | 7.75002 klx |
| 10 lm/in² | 15.5 klx |
| 25 lm/in² | 38.7501 klx |
| 50 lm/in² | 77.5002 klx |
| 100 lm/in² | 155 klx |