🪑 Seat Height Calculator
Enter your standing height to get a recommended seat height for an office chair, dining chair, or any seat you use for long stretches — no more guessing at the showroom.
🧮 Find Your Seat Height
What is a Seat Height Calculator?
It converts your standing height into a recommended seat height using a common ergonomic rule of thumb, so you can shop for a chair — or adjust the one you have — with a real number instead of a guess.
Use it before buying a desk chair, dining chair, or bar stool, or when adjusting a chair with a pneumatic lift. Pair it with the desk height calculator to make sure your seat and work surface line up for a neutral, comfortable posture.
❓ Frequently Asked Questions
How does the seat height calculator work?
Enter your standing height in centimetres. It multiplies that figure by 0.25 — a common ergonomic rule of thumb — to estimate a seat height that keeps your thighs roughly level and your feet flat on the floor.
Is a quarter of my height always the right seat height?
It's a solid starting point, not a fixed rule. Leg length varies relative to overall height, and footwear, flooring, and desk height all shift the ideal number a little — use the result as a baseline and fine-tune once you're sitting in the chair.
What happens if my seat is too high or too low?
Too high and your feet dangle or you perch on your toes, cutting circulation to your thighs. Too low and your knees ride above your hips, straining your lower back. Either way you lose the neutral posture that keeps a chair comfortable for long sessions.
Does seat height depend on the desk I'm using?
Yes — seat height and desk height work together. Once your seat is set, check that your desk height calculator result still leaves your forearms roughly parallel to the floor when typing; adjust one or the other if they don't line up.