TV Viewing Distance & Screen Size Calculator

THX recommends a 36-degree field of view (FOV) for cinematic immersion. Multiply your TV diagonal size by 1.2 to calculate optimal THX seating distance in inches (e.g. 65-inch TV = ~6.5 feet).

The Society of Motion Picture and Television Engineers (SMPTE) standard recommends a 30-degree field of view for general TV viewing (Screen Diagonal × 1.6), yielding ~8.7 feet for a 65-inch TV.

For a 65-inch 4K TV, sitting between 4.3 feet (4K visual acuity limit) and 8.7 feet (SMPTE 30° FOV) ensures full 4K resolution clarity without pixel structure grid lines.

1 arcminute (1/60th of a degree) represents maximum 20/20 human eye angular resolution. Beyond the 4K acuity distance, individual 4K pixels blend together and become indistinguishable from 1080p.

The vertical center of your TV screen should align directly with your seated eye level (typically 40 to 44 inches from the floor) to prevent neck strain.

Yes. Due to 8K rendering 33 million pixels (4x 4K), sitting closer at a 50-degree to 60-degree FOV allows full resolve of 8K detail.

For immersive 100-inch to 120-inch projector screens, a 40-degree FOV seating distance (Screen Diagonal × 1.0) provides an authentic commercial cinema experience.

Ultrawide 21:9 displays widen your horizontal field of view without increasing vertical height, allowing closer seating for immersive flight and racing simulators.

Sitting too close can cause eye fatigue and expose pixel grid lines; sitting too far diminishes perceived resolution benefits and reduces cinematic immersion.

Click 'Export Passport' to save your screen size, THX/SMPTE distance specs, and 4K visual acuity thresholds in a JSON report.