Electronics calculator
What Monitor Size Do I Need for My Desk?
Find monitor size for desk from eye-to-screen distance, target horizontal field of view, and available desk width.
Enter your measurements
This page is built for one question: what monitor size do i need for my desk? Supply eye-to-screen distance, target horizontal field of view, and available desk width, then use the returned monitor size for desk to screen unsuitable options.
- Eye-to-screen distance — Required
- Target horizontal field of view — Required
- Available desk width — Required
- Monitor aspect width — Required
- Monitor aspect height — Required
Monitor size for desk
Enter the measurements above to calculate monitor size for desk.
How the calculation works
V12 calculation: widthByFov=2×viewDistance×tan(toRadians(targetFov)/2); maxScreenWidth=min(widthByFov,deskWidth); maxScreenHeight=maxScreenWidth×aspectHeight/aspectWidth; maxDiagonal=sqrt(maxScreenWidth^2+maxScreenHeight^2). Angle inputs are explicitly converted to radians before trigonometric functions where required.
Worked example
Example: Eye-to-screen distance = 250 cm; Target horizontal field of view = 30 °; Available desk width = 140 cm; Monitor aspect width = 16; Monitor aspect height = 9. Result: Max Diagonal = 153.72 cm; Max Screen Width = 133.97 cm; Max Screen Height = 75.36 cm.
Before you decide
Recheck the limiting measurement before purchase or installation. This page calculates the stated geometry or quantity only; product-specific construction or installation details can still affect the final choice. For what monitor size do i need for my desk, the limiting result on this page is monitor size for desk.
Direct measurement/geometry calculation. No external reference is required for the arithmetic itself; the result is derived only from the user-entered measurements and the formula stored in calculationLogicJson.
Frequently asked questions
What does the Monitor Size for My Desk calculator tell me?
It returns monitor size for desk from the measurements entered on this page. The calculation is specific to monitor size for my desk, so the result should be compared with the exact product or specification you are considering.
Which measurements should I take for monitor size for my desk?
Measure eye-to-screen distance, target horizontal field of view, available desk width, monitor aspect width, monitor aspect height. Use clear, usable dimensions rather than nominal room or product labels.
Should I round the monitor size for desk?
Keep the calculated value for comparison, then choose a real product that meets or stays within the returned monitor size for desk while allowing for the clearances, tolerances or ratings shown by its manufacturer.