Desk Chair Height Calculator
Estimate a desk chair height range from your height and desk height, then check whether your current chair supports a workable seated posture.
Result
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Target chair height
— cm
- Seated elbow estimate
- —
- Lower-leg estimate
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- Current chair
- —
This setup check is not a diagnosis. A clinician or qualified ergonomics professional decides what is appropriate.
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How the desk chair height calculation works
This desk chair height calculator estimates seated elbow height and lower-leg height as approximately 0.25 × stature. It uses the lower-leg estimate as the feet-supported reference and compares it with desk height minus seated elbow height.
The resulting interval is a simple setup check: elbows should be near desk level with elbows at 90–110 degrees, while feet stay supported and knees are near 90–100 degrees. It is a starting point, not a diagnosis or a substitute for individual ergonomic assessment.
seated elbow height ≈ 0.25 × stature; lower-leg height ≈ 0.25 × stature; chair interval = lower-leg height to (desk height − seated elbow height) A single reading is not a diagnosis, and a clinician or qualified ergonomics professional decides what is appropriate for an individual. Adjustments to desk, chair, foot support and posture may be needed together.
Desk chair height calculator FAQ
What does this calculator measure?
It estimates a chair-height interval from your stature and desk height, then compares your current chair with that interval.
Why does it use 0.25 times height?
The supplied ergonomics reference gives approximately 0.25 × stature for both seated elbow height and popliteal height, the lower-leg reference used here.
What if there is no workable range?
The entered desk height and estimated lower-leg height do not overlap under this simple model. A desk adjustment, foot support or an individual assessment may be needed.
Does a workable result mean my posture is healthy?
No. This is a setup comparison, not a diagnosis. A single reading is not a diagnosis, and a clinician or qualified ergonomics professional decides what is appropriate.
Are my measurements saved?
No. The calculation runs in your browser and this component does not send values over the network.