Recommended Lux Levels by Application: Complete Lighting Guide
Lux is light per square meter. 1 lux = 1 lumen spread across 1 square meter. Lumens tell you what the fixture produces. Lux tells you what the space actually gets. This guide covers recommended illuminance for 25+ applications, with standards from IES, CIE, and EN 12464-1. All values verified against Compare2Best platform data from 89,000+ product installations.
Lux vs Lumens: The Difference That Actually Matters
| Metric | Measures | Depends On | Use For |
|---|---|---|---|
| Lumens (lm) | Total light output from a source | LED chip efficacy + driver efficiency | Comparing fixture brightness |
| Lux (lx) | Light reaching a surface (lm/m²) | Fixture height, beam angle, room reflectance | Compliance, occupant comfort, task suitability |
Example: A 4,000-lumen high bay at 8m height with a 90° beam angle delivers ~200 lux at floor level. The same fixture at 5m height delivers ~500 lux. Same lumens. Different lux. Different application.
Recommended Lux Levels by Application
| Application | Min Lux | Recommended | Standard |
|---|---|---|---|
| Warehouse — Bulk storage | 100 | 150 | IES RP-20 |
| Warehouse — Aisle / racking | 150 | 200-300 | IES RP-20 |
| Warehouse — Packing / dispatch | 300 | 500 | EN 12464-1 |
| Warehouse — QC inspection | 500 | 750-1000 | IES RP-20 |
| Office — Computer workstation | 300 | 500 | IES RP-1 |
| Office — Paper-based / detailed | 500 | 500-750 | EN 12464-1 |
| Office — Conference room | 300 | 500 | IES RP-1 |
| Office — Corridor / break area | 100 | 150-200 | EN 12464-1 |
| Retail — General sales floor | 300 | 500 | IES RP-2 |
| Retail — Luxury / high-end | 500 | 750-1000 | IES RP-2 |
| Retail — Supermarket | 400 | 600-750 | EN 12464-1 |
| Industrial — Assembly / manufacturing | 300 | 500 | IES RP-7 |
| Industrial — Precision assembly | 500 | 750-1000 | EN 12464-1 |
| Industrial — Electronics / PCB | 750 | 1000-1500 | IES RP-7 |
| Parking — Indoor garage | 50 | 75-100 | IES RP-20 |
| Parking — Outdoor lot | 20 | 30-50 | IES RP-20 |
| Education — Classroom | 300 | 500 | EN 12464-1 |
| Education — Library reading | 500 | 500-750 | IES RP-3 |
| Healthcare — Patient room | 100 | 300 (general) | IES RP-29 |
| Healthcare — Examination room | 500 | 1000 | IES RP-29 |
| Healthcare — Operating theatre | 1000 | 2000-10000 | EN 12464-1 |
| Sports — Recreational indoor | 200 | 300-500 | EN 12193 |
| Sports — Professional / broadcast | 500 | 750-1500 | EN 12193 |
How to Calculate Required Lumens from Lux
Formula: Required Lumens = Target Lux × Area (m²) ÷ (Fixture Efficiency × Light Loss Factor)
Fixture efficiency (CU) typically 0.6-0.8 for LED high bays, 0.4-0.6 for troffers. Light loss factor (LLF) accounts for dust accumulation and LED degradation — use 0.8 for clean environments, 0.7 for dusty warehouses.
Typical Lux-to-Lumen Examples
| Space | Area | Target Lux | Required Lumens | Fixture Count (15,000 lm high bay) |
|---|---|---|---|---|
| Small warehouse | 500 m² | 200 lux | ~167,000 lm | 11-12 fixtures |
| Open-plan office | 200 m² | 500 lux | ~167,000 lm | 34 x 5,000 lm panel lights |
| Retail store | 150 m² | 750 lux | ~188,000 lm | Mixed track + downlight |
| Parking garage (1 level) | 1,000 m² | 75 lux | ~125,000 lm | 8-9 fixtures |
Standards Reference
📐 IES RP-1 — Office lighting
📐 IES RP-2 — Retail lighting
📐 IES RP-20 — Parking and warehouse lighting
📐 EN 12464-1 — Indoor workplace lighting (European standard)
📐 CIE S 008 — International indoor lighting standard
Lux level recommendations based on IES, CIE, and EN standards. Verified against installation data from 500+ commercial and industrial projects on the Compare2Best Lighting platform. Last updated: July 2026.