Desk Height Calculator

Estimate your ideal sitting and standing desk height from your body height using the ergonomic elbow-height rule, plus a matching chair seat height.

Quick Facts

Rule
Elbow-height rule: surface ≈ elbow height, elbows bent 90-100°
Standing elbow height ≈ 60-65% of height; seated elbow height ≈ 37-40% of height.
Reference
Traditional fixed desks are built about 29 in (73.7 cm) tall
Most people notably taller or shorter than average need an adjustable desk.

Your Results

Calculated
Sitting desk height
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Surface height while seated
Standing desk height
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Surface height while standing
Chair seat height
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Pairs with the sitting height
Vs. standard 29 in desk
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Adjustment from a fixed desk

Ready

Enter your height and press Calculate.

About the Desk Height Calculator

This tool estimates the desk height that fits your body, using the same elbow-height rule that ergonomists, physical therapists, and standing-desk guides rely on. Sit or stand with your upper arms relaxed at your sides and your elbows bent 90 to 100 degrees — your work surface should meet your forearms at roughly that height so your wrists stay straight and your shoulders stay relaxed. Because most people cannot easily measure their own elbow height, the calculator estimates it from your total body height using widely used average body-proportion ratios, and refines the estimate if you know your chair's actual seat height.

The formulas used

  • Seated elbow height ≈ chair seat height + 9.5 in (a typical seat-to-elbow offset), or ≈ 0.385 × your height if no chair height is given.
  • Standing elbow height ≈ 0.63 × your height, plus about 1 inch if you'll be wearing shoes.
  • Desk height = the relevant elbow height, minus about 1 inch for keyboard/mouse tasks (so a keyboard resting on the desktop still sits at elbow height), or the elbow height itself for writing, reading, or laptop-only use.
  • Chair seat height ≈ 0.23 × your height (your popliteal, or knee-to-floor, height) — the height that lets your feet sit flat with thighs roughly horizontal.

These body-proportion ratios are averages, not a measurement of you specifically — arm length, torso length, and leg length vary between people of the same height. If you can measure your own seated elbow height directly (sit naturally, let your upper arm hang, and measure from the floor to the bottom of your elbow), use that instead of the estimate.

How to get the best results

  • Enter your height in inches, standing without shoes, for the most accurate baseline.
  • Choose "Typing" if your keyboard and mouse sit on the desk itself, or "Writing" for a surface used mainly for paper, reading, or a laptop.
  • If you already own a chair and know its seat height, enter it — this replaces the height-based estimate with a more direct calculation.
  • Recheck the numbers after a few days of use: the goal is relaxed shoulders and a straight wrist, not a single "perfect" number.

Practical context

Desk height is one part of a full ergonomic setup — monitor height (top of screen near eye level), chair depth, and keyboard/mouse placement all matter too. Treat the numbers here as a starting point within an inch or two, then fine-tune by feel: your forearms should be roughly parallel to the floor and your shoulders should not need to hunch or shrug to reach the keyboard.

Frequently Asked Questions

What is the standard formula for desk height?
Ergonomic guidance recommends setting your work surface at elbow height: sit or stand with your upper arms relaxed at your sides and elbows bent 90 to 100 degrees, and the desk (or keyboard, if it sits on a separate tray) should meet your forearms at that height. This calculator estimates elbow height from your total body height using average body-proportion ratios, since not everyone can measure elbow height directly.
What is a good desk height for sitting versus standing?
Standing elbow height is roughly 60 to 65 percent of a person's height, while seated elbow height (in a properly sized chair) is roughly 37 to 40 percent, because sitting removes most of your leg length from the measurement. That is why a sit-stand desk typically needs to move about 6 to 8 inches between its sitting and standing positions.
Should the desk be lower for typing than for writing?
Yes. If your keyboard sits directly on the desktop rather than on a recessed tray, the desktop should sit about 1 inch below your elbow height so the keyboard's own height does not push your wrists up. For writing, reading, or laptop-only use, the desktop can sit right at elbow height.
How does chair height affect desk height?
Your chair's seat height sets your hip and elbow height off the floor, so a taller or lower chair changes the correct desk height by roughly the same amount. If you already know your chair's seat height, enter it directly for a more accurate desk-height estimate than the body-height ratio alone.

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