Workshop Lighting: Lumens & Fixture Count by Room Size

Target · why this figureWhat a workshop is actually lit to

The highest requirement here. The ceiling is sized to 400 lux with task lighting assumed over the bench — machine and detail work needs both quantity and good colour rendering.

SOURCE·IES lumen-method recommendations·published recommendations, quoted as ranges·REVIEWED JUL 2026

Schedule · 60 footprintsEvery footprint, worked at 400 lux

Workshop fixture counts by footprint COMPUTED · JUL 2026
Room size	Area	Total lumens	Fixtures	Grid
8 × 8 ft	64 sq ft	6,361 lm	9	3 × 3
8 × 10 ft	80 sq ft	7,520 lm	9	3 × 3
8 × 12 ft	96 sq ft	8,654 lm	12	4 × 3
9 × 9 ft	81 sq ft	7,563 lm	9	3 × 3
9 × 12 ft	108 sq ft	9,398 lm	12	4 × 3
10 × 10 ft	100 sq ft	8,811 lm	12	3 × 4
10 × 11 ft	110 sq ft	9,505 lm	12	4 × 3
10 × 12 ft	120 sq ft	10,207 lm	12	4 × 3
10 × 13 ft	130 sq ft	10,901 lm	15	5 × 3
10 × 14 ft	140 sq ft	11,589 lm	15	5 × 3
10 × 15 ft	150 sq ft	12,272 lm	15	5 × 3
10 × 16 ft	160 sq ft	12,952 lm	15	5 × 3
10 × 20 ft	200 sq ft	15,711 lm	21	7 × 3
11 × 11 ft	121 sq ft	10,258 lm	12	3 × 4
11 × 12 ft	132 sq ft	11,000 lm	16	4 × 4
11 × 13 ft	143 sq ft	11,734 lm	16	4 × 4
11 × 14 ft	154 sq ft	12,461 lm	16	4 × 4
12 × 12 ft	144 sq ft	11,782 lm	16	4 × 4
12 × 13 ft	156 sq ft	12,553 lm	16	4 × 4
12 × 14 ft	168 sq ft	13,344 lm	16	4 × 4
12 × 15 ft	180 sq ft	14,140 lm	20	5 × 4
12 × 16 ft	192 sq ft	14,930 lm	20	5 × 4
12 × 18 ft	216 sq ft	16,496 lm	24	6 × 4
12 × 20 ft	240 sq ft	18,047 lm	24	6 × 4
12 × 24 ft	288 sq ft	21,228 lm	28	7 × 4
13 × 13 ft	169 sq ft	13,395 lm	16	4 × 4
13 × 14 ft	182 sq ft	14,240 lm	20	5 × 4
13 × 15 ft	195 sq ft	15,077 lm	20	5 × 4
13 × 16 ft	208 sq ft	15,908 lm	20	5 × 4
14 × 14 ft	196 sq ft	15,126 lm	20	4 × 5
14 × 15 ft	210 sq ft	16,003 lm	20	5 × 4
14 × 16 ft	224 sq ft	16,872 lm	20	5 × 4
14 × 18 ft	252 sq ft	18,663 lm	24	6 × 4
14 × 20 ft	280 sq ft	20,457 lm	25	5 × 5
15 × 15 ft	225 sq ft	16,919 lm	20	4 × 5
15 × 16 ft	240 sq ft	17,864 lm	25	5 × 5
15 × 18 ft	270 sq ft	19,766 lm	25	5 × 5
15 × 20 ft	300 sq ft	21,646 lm	30	6 × 5
16 × 16 ft	256 sq ft	18,869 lm	25	5 × 5
16 × 18 ft	288 sq ft	20,858 lm	25	5 × 5
16 × 20 ft	320 sq ft	22,822 lm	30	6 × 5
16 × 22 ft	352 sq ft	24,765 lm	30	6 × 5
16 × 24 ft	384 sq ft	26,693 lm	35	7 × 5
17 × 17 ft	289 sq ft	20,907 lm	25	5 × 5
18 × 18 ft	324 sq ft	23,013 lm	30	5 × 6
18 × 20 ft	360 sq ft	25,138 lm	30	6 × 5
18 × 22 ft	396 sq ft	27,236 lm	35	7 × 5
18 × 24 ft	432 sq ft	29,379 lm	36	6 × 6
20 × 20 ft	400 sq ft	27,415 lm	36	6 × 6
20 × 22 ft	440 sq ft	29,792 lm	36	6 × 6
20 × 24 ft	480 sq ft	32,178 lm	42	7 × 6
20 × 30 ft	600 sq ft	39,244 lm	48	8 × 6
22 × 22 ft	484 sq ft	32,379 lm	42	6 × 7
22 × 24 ft	528 sq ft	34,941 lm	45	9 × 5
24 × 24 ft	576 sq ft	37,674 lm	49	7 × 7
24 × 30 ft	720 sq ft	45,909 lm	56	8 × 7
25 × 25 ft	625 sq ft	40,428 lm	54	9 × 6
26 × 26 ft	676 sq ft	43,340 lm	56	7 × 8
28 × 28 ft	784 sq ft	49,452 lm	64	8 × 8
30 × 30 ft	900 sq ft	55,867 lm	72	9 × 8

At 800 lumens per fixture, 8 ft ceiling. A 12 × 14 ft workshop is the reference case: 16 fittings, 4 × 4, 3.5′ centres.

SOURCE·Computed from the lumen method·no dataset, every figure reproducible with a calculator·REVIEWED JUL 2026

Kitchen 300–500 lxLiving room 150–300 lxBedroom 100–200 lxBathroom 200–300 lxHome office 400–500 lxDining room 150–300 lxGarage 150–300 lxHallway 100–200 lxLaundry 200–300 lxBasement 150–300 lxNursery 100–200 lx

Workshop lighting

Target · why this figureWhat a workshop is actually lit to

Schedule · 60 footprintsEvery footprint, worked at 400 lux

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Workshop lighting

Target · why this figureWhat a workshop is actually lit to

Schedule · 60 footprintsEvery footprint, worked at 400 lux

AdjacentThe other eleven targets in the same house

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