Enter Workstation Measurements
Formula Used
Chair target: lower leg height + shoe allowance.
Desk target: current chair height + sitting elbow height.
Keyboard target: desk target minus 2 cm.
Monitor top target: chair height + sitting eye height minus 3 cm.
Monitor distance target: screen diagonal in centimeters multiplied by 1.20, limited between 50 cm and 85 cm.
Risk score: sum of weighted deviations for chair, desk, keyboard, monitor, mouse reach, back angle, wrist angle, glare, repetition, and break deficit.
Comfort score: 100 minus the final ergonomic risk score.
Ergonomic Workstation Planning Guide
Why Setup Fit Matters
A workstation should support the body before discomfort appears. Small mismatches can create repeated strain. A high desk may lift the shoulders. A low monitor may bend the neck. A distant mouse may pull the arm away from the body. These problems often feel minor at first. Over time, they can reduce focus and comfort.
Chair and Desk Alignment
Start with the chair. Feet should rest flat or on a firm footrest. Knees should feel relaxed. The seat should not press hard behind the knees. After the chair is set, match the desk to elbow height. Forearms should stay near level while typing. Shoulders should stay loose. Wrists should remain close to neutral.
Screen and Input Position
The screen should sit in front of the user. The top area of the display is usually best near eye level or slightly below it. This helps reduce neck extension. Screen distance depends on screen size and visual comfort. Larger screens often need more distance. Text should remain readable without leaning forward. The keyboard and mouse should sit close together. This reduces reaching and twisting.
Posture, Breaks, and Daily Use
No single posture should be held all day. Even a good position becomes tiring when it is static. Short breaks help muscles recover. Standing, walking, stretching, and looking away from the screen can reduce fatigue. The calculator estimates a break target from the work cycle. It also checks glare and repetition because both affect comfort. Use the results as practical guidance, not medical advice. Recheck the setup after changing chairs, monitors, desks, shoes, or daily tasks. Good ergonomics is a habit. It works best when reviewed regularly.
FAQs
1. What does this ergonomics calculator measure?
It estimates workstation fit by comparing your chair, desk, keyboard, monitor, mouse, posture, glare, repetition, and break values against practical target ranges.
2. Is a lower risk score better?
Yes. A lower score means fewer measured mismatches. A higher comfort score means your setup is closer to common ergonomic targets.
3. How should I measure sitting eye height?
Sit upright on your chair. Measure from the seat surface to your eye level. Keep your head neutral while measuring.
4. What is lower leg height?
It is the distance from the floor to the underside of your knee while seated. It helps estimate a comfortable chair height.
5. Why is monitor distance included?
Screen distance affects eye comfort and leaning. A screen placed too near or too far may increase neck, back, or eye strain.
6. Can this replace professional ergonomic assessment?
No. It gives practical estimates. Complex pain, disability, injuries, or workplace compliance needs should be reviewed by a qualified professional.
7. Why do breaks affect the score?
Static posture increases fatigue. Short movement breaks reduce continuous loading and help muscles recover during long computer sessions.
8. What should I adjust first?
Start with chair height, foot support, and desk alignment. Then adjust keyboard, mouse, monitor height, screen distance, and lighting.