Interactive Monitor Ergonomics & Distance Calculator

Fine-tune screen distance, height, and tilt to prevent neck flexion, eye strain, and glare according to OSHA and ANSI/HFES standards. Drag the monitor directly on the canvas or adjust sliders below.

Setup & Anatomy

Standard Workstation Presets

User Height 175 cm (5′9″) Calculates standard seated eye level (~118 cm from floor). Desk Height 73 cm Standard desk surface: 71–75 cm (28–30 in). Screen Size 24 inches (16:9) Viewing Distance 65 cm (25.6 in) Recommended: 50–75 cm (~arm’s length from eyes). Screen Center Above Desk 38 cm (15.0 in) Top bezel should sit at or up to 5 cm below eye level. Monitor Tilt Angle 12° back Tilt 10°–20° back keeps the screen perpendicular to downward gaze.

Biomechanical Ray-Trace Simulator

24″ Display / 16:9

Gaze Declination 16.2° Optimal (15°–20°)

Top Bezel vs Eyes -2.4 cm At Eye Level

Distance Status 65 cm Arm's Length

Perpendicularity Delta 4.2° Low Glare / Sharp

💡 Interactive: Click & drag the monitor box to position 🟢 Green cone = Natural vision field (10°–30°)

Workstation meets OSHA 1910.900 & ANSI/HFES 100 ergonomics recommendations.

1. The 15°–20° Gaze Rule

Resting human eye posture looks slightly downward. Placing the center of your screen 15° to 20° below horizontal eye line prevents dry eyes and reduces anterior neck muscle tension.

2. The Eye-Level Bezel Rule

The top border of your screen should never sit higher than your natural horizontal eye line. For bifocal or progressive lens wearers, lower the monitor by another 4–8 cm to prevent tipping the chin upward.

3. Tilt & Perpendicularity

Because your eyes gaze downward at the screen, tilting the monitor backwards by 10°–20° keeps the screen plane perpendicular (90°) to your focal path, optimizing text contrast and reducing overhead reflections.