Projector Throw Distance, 16:9 Screen Size & Room ANSI Lumen Calculator
Measure whether your bedroom or living room has enough throw distance for a 100-inch or 120-inch image—and calculate the honest ANSI lumen brightness required for your ambient lighting.
True 1920×1080 native panel, 4K HDMI input support, dual-band Wi-Fi & Bluetooth speaker out.
Boost perceived contrast and eliminate drywall texture indoors or in the backyard.
How Throw Ratio & ANSI Lumens Work
Throw Ratio equals Lens Distance ÷ Screen Width. A 1.25:1 portable projector placed 9.1 feet back fills an 87-inch-wide (100" diagonal) 16:9 frame. Never confuse "light-source LED lumens" (often inflated 10×–15× on budget listings) with standardized ANSI lumens, which equals screen area in square feet multiplied by foot-lamberts (16 ft-L is SMPTE cinema dark-room standard). Read our full optical guide: How to Read Projector Specs: Lumens, Native Resolution & Throw Distance.