TV Viewing Distance Calculator
Calculate
Formula
Minimum distance = diagonal x 1.5. Maximum distance = diagonal x 2.5. THX: distance = width / (2 x tan(20 deg)). SMPTE: distance = width / (2 x tan(15 deg)). 16:9 width = diagonal x 0.8716.
Frequently Asked Questions
How far should I sit from my TV?
A common guideline is 1.5 to 2.5 times the screen diagonal. For a 65-inch TV, that is about 8 to 13.5 feet. THX recommends a 40-degree viewing angle, and SMPTE recommends 30 degrees.
Does 4K resolution change the recommended distance?
Yes. With 4K resolution, you can sit closer without seeing pixels. Some recommendations for 4K suggest 1.0 to 1.5 times the diagonal, allowing you to enjoy the extra detail.