Monitor Viewing Distance Calculator

The optimal viewing distance depends on screen size, resolution, and what you are doing. Sitting too close causes eye strain. Sitting too far makes small text and details hard to see.

THX recommended viewing angle: 40 degrees for an immersive cinema experience. SMPTE (Society of Motion Picture and Television Engineers): 30 degrees for comfortable, extended viewing. General computing: 20 degrees field of view is comfortable for productivity.

Distance formula based on viewing angle: Distance = (Screen Width / 2) / tan(Angle / 2)

Resolution matters: At higher resolutions, you can sit closer without seeing individual pixels.

• 1080p (Full HD): Minimum distance ≈ 1.5× screen height to avoid seeing pixels
• 1440p (QHD): Minimum distance ≈ 1.2× screen height
• 4K (UHD): Minimum distance ≈ 0.75× screen height (pixels are very fine)

General guidelines by screen size:

• 24" monitor: 2.0-3.0 ft (60-90 cm)
• 27" monitor: 2.5-3.5 ft (75-107 cm)
• 32" monitor: 2.8-4.0 ft (85-122 cm)
• 34" ultrawide: 2.5-3.5 ft (75-107 cm)
• 43" monitor/TV: 3.5-5.0 ft (107-152 cm)

Usage adjustments:

• Gaming (immersive): Sit closer for a wider field of view (30-40° angle).
• Competitive gaming: Some players sit very close for quick reactions.
• Productivity/Office: Moderate distance for comfortable reading (20-30° angle).
• Video watching: Can sit further back for relaxed viewing (25-35° angle).

Ergonomic tips:

• The top of the screen should be at or slightly below eye level.
• The screen should be tilted back 10-20 degrees.
• The center of the screen should be about 15-20 degrees below your horizontal eye line.
• Follow the 20-20-20 rule: Every 20 minutes, look at something 20 feet away for 20 seconds.