Desk & Monitor Setup Planner
Check monitor placement from seated eye height, screen dimensions and viewing distance.
Your workstation geometry inputs
Geometry from actual measurements, not a body-height-based prescription or a diagnosis of pain or eye strain.
Workstation geometry report
17.82 degrees · gaze down to screen centre
Screen centre below eye level
Full result table
| Geometry quantity | Value | Unit |
|---|---|---|
| Vertical eye-to-centre drop | 22.5 | cm |
| Horizontal distance | 70 | cm |
| Gaze angle (positive down) | 17.818889 | degrees |
Geometry from actual measurements, not a body-height-based prescription or a diagnosis of pain or eye strain. Vision, text size, task and accessibility needs affect a suitable setup. General guidance is context, not a guaranteed perfect posture.
Let’s work it out.
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How to use Desk & Monitor Setup Planner
- Check monitor placement from seated eye height, screen dimensions and viewing distance.
- The report separates monitor top, centre and bottom.
- OSHA gives a general viewing-distance range and advises keeping the top of a monitor at or just below eye level.
Worked example
A top at 120 cm and a 35 cm screen give centre 102.5 cm. With eyes at 125 cm and distance 70 cm, the centre sight line slopes downward by about 17.82°.
Formula, accuracy & limitations
Screen bottom = top − screen height. Screen centre = top − screen height/2. Vertical sight angle = atan((eye height − screen centre)/horizontal distance). Report the top-to-eye difference and compare distance descriptively with OSHA’s general 50–100 cm range.
Geometry from actual measurements, not a body-height-based prescription or a diagnosis of pain or eye strain. Vision, text size, task and accessibility needs affect a suitable setup. General guidance is context, not a guaranteed perfect posture.
The primary result is rounded to two decimal places. Calculation tables show up to four and supporting metrics up to six. Very small nonzero values use scientific notation. Display rounding is not fed back into the arithmetic.
Official source and method context ↗Measure the real workstation
Check monitor placement from seated eye height, screen dimensions and viewing distance. Measure heights from the same floor reference while using the actual chair position. Body height alone cannot determine the correct desk or monitor position for every person.
Read the geometry diagram
The report separates monitor top, centre and bottom. The sight-line angle uses the horizontal eye-to-screen distance, so it is a geometric estimate rather than an eye examination. A positive downward angle means the centre lies below the supplied eye height.
Use guidance as context
OSHA gives a general viewing-distance range and advises keeping the top of a monitor at or just below eye level. Text size, corrective lenses and tasks can change a comfortable arrangement. The worksheet therefore reports differences and reference context rather than declaring one exact setup correct for all users.
Recheck measurements after changes
Changing chair height can alter both eye height and the relation to the screen. Moving a monitor can change horizontal distance and the centre angle. Measure the resulting position rather than assuming one adjustment solves discomfort or guarantees prevention of symptoms.
Frequently asked questions
Can my body height determine all settings?
This tool uses actual workstation measurements because proportions and tasks differ.
Is the angle a medical recommendation?
It is a calculated sight-line angle, not a diagnosis or vision prescription.
Why use horizontal distance?
The angle formula compares vertical difference with the horizontal component of the sight line.
Does a reference-range match guarantee comfort?
No. Vision, text size, accessibility and task demands remain relevant.
