A desk that is the wrong height shows up in your shoulders, wrists, neck, and eyes by the end of the week. The site offers two calculators for fixing that, and they work very differently. The desk height calculator produces a quick estimate from your body height, shoe height, and whether you sit or stand. The desk ergonomics calculator starts from your actual seated measurements and builds a coordinated setup: desk, chair, keyboard, monitor center, and viewing distance.
What each calculator does
The desk height calculator converts everything to centimeters, then applies simple multipliers. For standing work, desk surface is body height times 0.57 plus shoe height — a result that often lands near elbow-height standing ranges. It also returns a keyboard tray 5 cm below the surface and a monitor center 45 cm above it. The page is explicit about its weak point: the sitting formula multiplies body height by 0.1475, which produces implausibly low values for many adults. The page tells you to treat the sitting output as a warning to verify rather than a purchase specification.
The desk ergonomics calculator asks for five inputs: your height, sitting elbow height, sitting eye level, knee height, and shoe height. From those it recommends desk height (sitting elbow height plus 2.54 cm), chair height (knee height plus shoe height), monitor center height (seated eye level minus 5 cm), keyboard height (the same as desk height), and monitor distance (40 percent of body height). The formulas are local to your body rather than generic multipliers, which is why the page calls itself measurement-based.
Side-by-side
| Desk Height calculator | Desk Ergonomics calculator | |
|---|---|---|
| Inputs | Body height, shoe height, sitting or standing | Height, seated elbow height, seated eye level, knee height, shoe height |
| Outputs | Desk surface, keyboard tray, monitor center | Desk, chair, keyboard, monitor center, monitor distance |
| Basis | Body-height multipliers | Your own seated measurements |
| Standing support | Yes — standing formula is the stronger result | Seated workstation focus |
| Known limitation | Sitting formula returns implausibly low values; verify against elbow height | Monitor distance is a simple 40% scaling rule, not a vision test |
| Effort required | Two inputs | Five measurements with a tape measure |
| Best for | Quick estimate, standing-desk preset checks | Full seated workstation planning before buying or adjusting |
When to use which
Use the desk height calculator when you want a fast starting point — comparing standing-desk presets, sanity-checking a new desk, or checking whether a keyboard tray has enough range. Its standing output is the more credible of the two modes; read the sitting caveat before you trust it.
Use the desk ergonomics calculator when you can take the five seated measurements and you want a plan that coordinates the chair, keyboard, and monitor together. It is the better tool before buying a chair, installing a monitor arm, or choosing a keyboard tray, because it answers questions the quick calculator does not: seat height, eye level, and viewing distance.
If the two calculators disagree, the measurement-based setup should win, then you adjust at the desk. Both pages agree on the final test: shoulders relaxed, forearms near level, wrists straight, feet supported, and the screen where your neck does not bend sharply. If pain or discomfort persists after setup, that is a sign to check with a professional rather than to keep adjusting furniture blindly.