Calculator inputs
Use the form below to estimate sitting and standing desk heights from practical ergonomic assumptions.
Formula used
This page uses ergonomic estimation formulas, not medical measurements. It combines body height ratios, chair height, footwear, task adjustment, posture adjustment, and keyboard thickness.
Suggested Chair Seat Height = (Body Height × 0.245) + Shoe Sole Thickness − 2
Recommended Sitting Desk Height = Chair Seat Height + (Body Height × Seated Elbow Factor) + Task Adjustment + Posture Adjustment − Keyboard Thickness
Recommended Standing Desk Height = (Body Height × Standing Elbow Factor) + Shoe Sole Thickness + Task Adjustment + Posture Adjustment − Keyboard Thickness
Monitor Center Height = Eye Height − Monitor Drop
Task adjustments raise or lower the work surface for writing, drawing, or keyboard use. Posture adjustments fine-tune neutral, upright, precision, or relaxed positions.
How to use this calculator
- Choose centimeters or inches before entering any values.
- Enter your full body height and your current chair seat height.
- Add shoe sole thickness and keyboard thickness for more realistic results.
- Select the task type that best matches your daily work.
- Choose a posture mode to reflect neutral, relaxed, upright, or precision positioning.
- Adjust seated and standing elbow factors only if you use a custom fitting method.
- Press the calculate button to view results above the form.
- Review the chart, then export the results as CSV or PDF.
Example data table
| Profile | Body Height | Chair Seat | Task Type | Recommended Sitting Desk | Recommended Standing Desk |
|---|---|---|---|---|---|
| Compact setup | 160 cm | 41 cm | Keyboard-heavy | 62.36 cm | 98.30 cm |
| Balanced office setup | 170 cm | 43 cm | Mixed computer work | 65.32 cm | 106.60 cm |
| Taller writing setup | 185 cm | 47 cm | Writing and paperwork | 73.51 cm | 118.05 cm |
Frequently asked questions
1. Is this calculator useful for both sitting and standing desks?
Yes. It estimates both heights together, so you can compare fixed desks, adjustable desks, and sit-stand travel range using one set of body measurements.
2. Why does chair seat height matter so much?
Sitting desk height depends on where your elbows rest above the floor. A higher or lower chair changes that reference point, which changes the ideal desk surface height.
3. What task type should I choose?
Choose keyboard-heavy for typing, mixed for general office work, writing for paperwork, and drawing for tablet or sketch tasks that need a slightly higher surface.
4. Are the elbow factors fixed for everyone?
No. They are practical default ratios. If you already know your own seated or standing elbow heights, you can tune the factors for a closer personal fit.
5. Should my monitor height match the desk height?
Not exactly. Monitor height depends more on eye level than desk level. This calculator estimates monitor center height by subtracting your preferred drop below the eyes.
6. Can I use inches instead of centimeters?
Yes. Pick inches in the unit selector. The calculator converts the values internally, then shows results back in the same unit system you selected.
7. Why is keyboard thickness included?
A thicker keyboard raises your hands above the desk surface. Subtracting thickness helps estimate a desk height that keeps wrists and elbows closer to neutral.
8. Can this replace an ergonomic assessment?
No. It is a planning tool for layout decisions. Personal comfort, pain history, monitor distance, armrests, and desk depth still need real-world adjustment.