TV Viewing Distance & Screen Size Calculator

Determine the perfect TV or projector screen size for your room dimensions based on THX (36°) and SMPTE (30°) viewing angle optics.

Optical Optics Engine

TV & Projector Screen Calculator

SMPTE (30°/40° FOV) & THX (36° FOV) angular resolution distance standards.

Screen Size (Diagonal Inches)

Resolution

Cinema Minimum

5.9 ft

40° FOV Immersive

THX Ideal

6.5 ft

36° FOV Standard

SMPTE Limit

8.7 ft

30° FOV General

Physical Dimensions56.7" W × 31.9" H

4K Benefit Distance Limit< 4 ft

Explore optimal THX (36° field of view) and SMPTE viewing distance calculations across popular display sizes.