Garage & Gym Lighting Lumens Calculator
Enter your room size and how you use it. You get a lumen target and up to three matched options — budget, best match, and premium — from our most popular kits. Methodology from our garage and gym lumens guides, IES-referenced. Kit outputs come from each product's published spec range.
Calculate Your Lumen Target
Single bay: about 200 sq ft (10×20). Double: 400 (20×20). Triple: 600.
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Before ordering, check that garage-door tracks, beams, ceiling fans, and opener rails stay clear of the mounting area. Odd ceiling shape or bigger space? Free custom layout from your dimensions in 24 hours. Mounting and wiring: installation guide.
How this calculator works
Garage mode: floor area × an installed lumens-per-square-foot benchmark (75 parking / 100 DIY / 150 home detailing / 250 pro detailing), cross-referenced against IES Lighting Handbook foot-candle recommendations. For ceilings above the typical 8–11 ft range, a planning-level mounting-height allowance applies (×1.15 / ×1.3 / ×1.45) — not a full photometric design with coefficient-of-utilization and light-loss factors, but a practical adjustment for the fact that light mounted higher spreads over more area before it reaches the floor. Full math in the garage lumens guide.
Gym mode: room size × an installed lumens-per-square-foot benchmark (90–110 residential everyday / 120–150 residential premium bright / 100–180 commercial, in line with our gym lumens guide) × the same mounting-height allowance. Above the 8–11 ft sweet spot, light spreads wider and the floor gets less — higher ceilings need more lumens, or a suspension kit.
How we recommend: every option is scored as a real configuration — kit, quantity, standard or dimmable, and the exact 30% / 60% / 100% setting it would run at. Recommendations come from our most popular kits — the sizes with the most installs and customer photos — and long-room shapes join in only when the room genuinely calls for them.
You see up to three options. The budget pick is the lowest-cost way to cover the space. The best match balances real output, ceiling coverage, and value — anything above your number starts losing points immediately, so there is no free pass for oversizing. The premium pick adds fuller coverage or dimming flexibility, capped so you are never pushed far past your target. For parking and storage, value weighs heavier in the scoring; for gyms and detail work, coverage does. Multi-kit plans always show the per-kit price and the estimated total.
Every figure comes from the kit's published spec range on its product page, judged conservatively from the low end. If nothing in the stock range makes an honest match — or your room lands in an awkward spot between sizes — the calculator says so and routes you to a free custom layout instead of forcing a recommendation.
Lumens Calculator FAQ
How does this lumens calculator work?
Garage mode multiplies your floor area by an installed-lumens benchmark for how you use the space (75–250 lumens per square foot, cross-referenced against IES foot-candle recommendations), with a mounting-height allowance for ceilings above 11 ft. Gym mode works the same way with gym-specific benchmarks (90–150 lm per sq ft residential, 100–180 commercial, depending on brightness level). The calculator then scores every kit, quantity, and dimming setting against your target and shows up to three options: a budget pick, the best match, and a premium upgrade.
Why do I see up to three options?
Different spaces have different priorities. The budget pick is the lowest-cost option that covers the space, the best match balances real output, ceiling coverage, and value, and the premium pick adds fuller coverage or dimming flexibility. All three come from our most popular kits, with exact output ranges and prices — including estimated totals for multi-kit plans — so you can choose by budget or by look.
How accurate are the recommendations?
They are planning-level estimates built on each kit's published spec range, judged conservatively from the low end of that range. Real-world results vary with wall color, ceiling height, and layout, so treat the result as a strong starting point rather than a photometric site design. For unusual rooms, our team checks your dimensions by hand with a free custom layout.
Why does it sometimes recommend a dimmable kit?
Each dimmable kit is scored at its real 30% and 60% settings, so it is recommended only when one of those settings actually covers your target — you run that setting day to day with full power in reserve, and the result card shows the setting and its real lumen range. When a standard kit matches your target just as well, we recommend the standard version — it costs less and does the same job.
What if my room is bigger than the largest kit?
Multi-kit layouts are scored the same way as single kits, but a 2-, 3-, or 4-kit per-bay plan takes the top spot only when it clearly beats the best single-kit option — otherwise we keep the install simpler. The result shows the per-kit price and the estimated total, so there are no surprises. Beyond that, send us your dimensions for a free custom layout — our team designs your grid within 24 hours.
Can I use it for barber shops, studios, or workshops?
Yes, as a close guide. Use Garage mode's General DIY level for detail-focused work areas like barber stations and studios, or the detailing levels where color accuracy matters most, and Gym mode's Premium bright levels for a clean, high-impact look in open training or display spaces.