Measure standing height without unusually thick footwear.
Free private calculator
Office chair height calculator
Estimate a seat-height starting point from body height, then adjust for supported feet, knee comfort, and the actual desk.
No accountInputs stay in this tab
Seat-height starting point44.2
Centimeters. Refine for actual lower-leg length, footwear, and support.
Direct answer
What this tool calculates—and what it does not.
Estimate a seat-height starting point from body height, then adjust for supported feet, knee comfort, and the actual desk.
Transparent methodology
How the calculation works
The calculator uses a simple anthropometric proportion as a first setup estimate. Real lower-leg length, footwear, seat cushion compression, footrests, and desk constraints vary, so the body-position checks remain more important than the number.
Formula or decision ruleStarting seat height ≈ body height × 0.26.
Inputs explained
Practical use
When this tool is useful
- Choosing an initial adjustment for an unfamiliar chair.
- Checking whether a chair’s published range is plausible for you.
- Identifying when a footrest or different desk arrangement may be needed.
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
- Support the feet and avoid concentrated pressure behind the thighs.
- Let the knees rest comfortably; exact hip and knee angles can vary.
- After chair height, bring the keyboard and pointer to relaxed elbow height.
Boundaries
What the result cannot tell you
- Body height does not predict lower-leg length exactly.
- It does not account for footwear, cushion compression, disability, or a footrest.
- It is not a treatment recommendation for pain or injury.
Common questions
Common questions about Office chair height calculator
What if my feet do not reach the floor?
Use a stable footrest or lower the chair if the work surface still permits relaxed shoulders and elbows. Do not solve desk mismatch by leaving the feet unsupported.
Should knees be exactly 90 degrees?
No single exact angle is required for everyone. Aim for supported feet, comfortable knees, no pressure behind the thighs, and the ability to change position.
Should I adjust the chair or desk first?
Start with the lower body and chair support, then bring the work surface and input devices to the body. A fixed desk may require a footrest or keyboard tray.
How accurate is the office chair 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.