Use the diagonal size printed for the main display.
Free private calculator
Monitor distance and height calculator
Estimate a starting viewing-distance range from screen diagonal, then use eye level, text size, and visual comfort to refine the setup.
No accountInputs stay in this tab
Starting monitor distance33.75
Inches. Refine with text size, eyewear, task, and comfort.
Direct answer
What this tool calculates—and what it does not.
Estimate a starting viewing-distance range from screen diagonal, then use eye level, text size, and visual comfort to refine the setup.
Transparent methodology
How the calculation works
The calculator multiplies screen diagonal by a user-visible distance factor. It supplies a starting range rather than one correct posture because screen resolution, text size, vision, task, multiple monitors, and individual comfort change the result.
Formula or decision ruleStarting viewing distance = screen diagonal × selected distance factor.
Inputs explained
Choose a nearer, middle, or farther starting factor; increase text size before leaning forward.
Practical use
When this tool is useful
- Moving a new monitor into a reasonable first position.
- Comparing distance before and after increasing text size.
- Reducing repeated leaning or neck rotation around a main screen.
A reliable way to use it
- 01Use a current baseline
Enter values from the same person, household, account, or operating period. Mixing periods makes a precise-looking result less useful.
- 02Run more than one scenario
Change one uncertain input at a time. A conservative and an expected case reveal which assumption matters most.
- 03Read the boundaries
Review the method and limitations on this page before turning the estimate into a decision.
- 04Save the next action
Record the input, result, source, and review date so the estimate can be checked when circumstances change.
Interpretation
How to read the result
- Center the primary screen with the task and keep frequently used content easy to read.
- Place the top portion of the display around or below relaxed eye level, then adjust for lenses and comfort.
- Test the position during real work and change one variable at a time.
Boundaries
What the result cannot tell you
- It is not a vision test, medical assessment, or universal workstation standard.
- The formula does not account for pixel density, text size, progressive lenses, or visual impairment.
- Multiple-monitor layouts require task-specific placement.
Common questions
Common questions about Monitor distance and height calculator
How far should a monitor be from my eyes?
Use a comfortable starting distance that lets you read without leaning, squinting, or craning. OSHA emphasizes adjustability and neutral positioning rather than one universal number.
Should the top of the monitor be exactly at eye level?
Not always. A common starting point places the top portion around or below eye level, but display size, task, seating, and eyewear can require adjustment.
What should I change before moving the screen closer?
Try increasing operating-system scaling, text size, contrast, and application zoom. These can improve readability without forcing the neck forward.
How accurate is the monitor distance and height calculator?
It is a transparent planning estimate, not a measurement or prediction. Its usefulness depends on the inputs and assumptions shown on this page. Compare the result with actual records before making a material decision.
Are my entries stored or sent anywhere?
No. The calculation or check-in runs in the browser tab and does not require an account. Avoid entering names, account numbers, or other identifying information.
Evidence and review notes
Sources behind the method
These references support the method, boundary, or safety context. They do not turn this planning tool into individualized professional advice.
Optional next step
Follow app updates When reminders would help the habit stick
ErgoMate is the optional iOS companion for turning setup guidance and movement prompts into a repeatable workday routine.