Budget Projectors

Tools

How Bright Does Your Projector Need to Be?

Brightness is about your room, not the box. A dim projector in a dark theater looks great; a bright projector in a sunlit living room still washes out. Answer three questions and get your real target in ANSI lumens.

1 · Your screen
40″200″
2 · Your light
How much light is in the room when you watch?
3 · Your screen
What screen material?
Your target

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4 · Already have a projector? (optional)
Enter its ANSI lumens to see what it gives you on this screen.

How this works

Projector brightness only means something per square foot of screen. A 2,000-lumen projector on a 200-inch screen is dim; on an 80-inch screen it's blinding. This calculator multiplies your screen's area by a brightness target for your lighting, then adjusts for your screen's gain. Gray screens need more lumens; high-gain screens need fewer.

Two things the number doesn't tell you:

  • In a dark room, contrast beats brightness. Once you have enough lumens, deeper blacks matter far more than extra brightness. Don't overspend on lumens you'll never use.
  • Only compare ANSI lumens. "LED lumens" and "light source lumens" are inflated marketing numbers. If a listing won't say ANSI lumens, treat its brightness claim as fiction. See the glossary.

Now match a projector to your room

Brightness is one half of the equation — the other half is whether the projector physically fits your space. Run your room through the throw distance calculator, or book a consultation and get the full recommendation done for you.