Ergonomic Setup Calculator

Enter your height (or measure elbow + eye height for precision) and get a complete neutral-posture workstation spec — seat, sitting & standing desk, monitor height/distance/tilt, keyboard and armrest — with a labeled side-profile diagram.

The most thorough workstation calculator in our network: it specs your whole setup — chair, both desk heights, monitor, keyboard, armrests — not just one number. All math runs in your browser from published anthropometric ratios; nothing is sent anywhere.

About you

Your height (cm)

Precision mode — measure 2 body heights (optional, overrides estimates)

Sit upright in your chair, feet flat, forearms horizontal. Measure with a tape from the floor. These override the height-derived estimates for a setup tuned to your proportions.

Seated elbow height from floor (cm) Floor → bottom of elbow, upper arm vertical. Seated eye height from floor (cm) Floor → corner of the eye, looking straight ahead.

Primary monitor diagonal (inches) Drives the recommended viewing distance (the 20–28 inch rule, scaled).

Your side profile

Labeled neutral-posture side profile. All heights are measured from the floor unless noted.

Your workstation spec

Setup checklist

If your desk is fixed-height

Your desk's actual height (cm)

How these numbers are derived

Every value comes from published stature ratios and office-ergonomics standards, not guesswork:

Seat height ≈ popliteal height (≈ 0.26 × stature) + a shoe allowance — knees ~90–110°, feet flat.
Seated elbow height ≈ 0.245 × stature above the floor — this sets keyboard, armrest and sitting-desk height (the elbow-derived rule).
Sitting desk = keyboard surface at seated elbow height; standing desk ≈ standing elbow height (≈ 0.63 × stature).
Eye height from sitting height × seated-eye ratio; the monitor's top edge sits at-to-just-below it, because the comfortable gaze zone is 15–35° below horizontal.
Viewing distance scales with diagonal (the 20–28 inch rule): ~50–65 cm for 21–24″, up to ~70–75 cm for 27–32″.
Monitor tilt 10–20° back; elbow/knee angles 90–110°.

If you enter measured elbow/eye heights in precision mode, those replace the estimates and everything downstream recomputes from your real body. Otherwise we estimate from height alone — good to within a couple of centimetres for most people, but proportions vary, which is why each spec row shows an adjustment range rather than a single number. The diagram and checklist are there to fine-tune by feel: aim for neutral joints, not a millimetre.

Coefficients, ranges and citations live in src/data/ergo-ratios.json (model v1.0.0). Sources include Pheasant & Haslegrave Bodyspace, ISO 9241-5, BIFMA G1, the OSHA Computer Workstations eTool and Cornell CUErgo. Educational guidance, not medical advice.