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LED Lighting Calculator

How Many Lumens Does Your Space Need?

Size any commercial space to IES light-level standards, or find the LED that replaces your old metal halide or fluorescent fixture, then get a free fixture plan from our team.

Calculate My Lighting Call (585) 781-0600
LED troffer lighting installed in a commercial office
110-170
lumens per watt, our fixtures
100,000 hr
rated fixture life
Up to 75%
energy cut vs metal halide
5-Year
warranty

Manufacturing commercial and industrial LED since 2004. DLC Premium and UL listed, backed by a 5-year warranty and shipped from US inventory.

DLC Premium listed UL listed FCC certified ENERGY STAR 5-year warranty

Lighting Calculator

How Many Lumens Do You Need?

Size your space to IES light-level targets, or find the LED that replaces your old fixture. Then get a free fixture plan from our team.

Estimates based on IES recommended light levels. We confirm the exact layout with a free photometric plan.

How It Works

How we size your space.

1

Tell us your space

Enter your space type and dimensions, or your old fixture wattage. We apply the IES light-level target for your application.

2

See lumens and fixtures

Get the lumens you need and an approximate fixture count for the matched Go Green LED fixture, instantly.

3

Get a free fixture plan

Our team turns it into a site-specific photometric layout and quote, with DLC Premium fixtures from US inventory.

Common Questions

Lighting calculator FAQ

How many lumens do I need for my space?
It depends on your space type and size. Multiply your floor area by the recommended foot-candle level for your application (for example, about 25 foot-candles for a warehouse or 30 to 50 for an office). The calculator above does this for you and recommends a fixture count.
What is a foot-candle?
A foot-candle is a measure of how much light reaches a surface. One foot-candle equals one lumen per square foot. The IES (Illuminating Engineering Society) publishes recommended foot-candle levels for each type of space, and we size to those.
Which fixture should I use?
Mounting height and application drive the choice. High ceilings use UFO or linear high bays, offices and retail use troffers and flat panels, parking lots use area and shoebox lights. The calculator recommends a matched Go Green fixture, and our team confirms it in your free fixture plan.
Is this an exact lighting design?
No, it is a fast estimate. The exact fixture count depends on ceiling height, room shape, surface reflectance, and fixture optics. We provide a free site-specific photometric layout that accounts for all of those.
What LED wattage replaces my metal halide or HPS fixture?
As a rule of thumb, an LED replacement draws roughly one third of the old fixture's real wattage (including ballast losses) while matching or beating the light output. Switch to the "What LED replaces my fixture?" tab above to see the equivalent for your exact wattage.
Can you do a full photometric layout?
Yes. Send us your floor plan or dimensions and we deliver a complete photometric layout showing fixture placement, foot-candle levels, energy use, and a full parts list with pricing, at no cost.
Calculate my lighting

See what your space needs.

Get your lumens, a fixture count, and a free photometric plan from our team.

Calculate my lighting