TV Size and Distance Calculator

Calculate optimal TV size for viewing distance.

Your Setup

Viewing Distance (Feet)

TV Size (Diagonal Inches)

Common Distances

Immersion Analysis

Field of View

29.4°

Cinema Std (THX)NO36-40° range

Living Room (SMPTE)NO>30° range

Recommended Size for 9ft

68" - 90"

Based on optimized 40° field-of-view standards.

About this calculator

Overview

TV size calculation determines optimal screen size for viewing distance. Based on THX and SMPTE recommendations. Essential for home theater planning.

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Pro Tips

For 4K TVs, you can sit much closer without seeing individual pixels, allowing for larger screens in small rooms.
If the FOV is too high (>50°), you may experience eye strain as you have to move your eyes to scan the edges of the screen.
THX recommends a 40° viewing angle for 'immersive' cinematic experiences.
Viewing height is also critical; the center of the screen should ideally be at eye level.

Fun Facts

Formula: Optimal Distance = Screen Height × 1.5-2.5 (THX); Distance / 0.84 = Max TV Size