Desk Height Calculator
Enter your height to get personalised ergonomic measurements for your sitting desk, standing desk, chair, and monitor.
Your Ergonomic Measurements
Your Ergonomic Posture Diagram
Diagram updates with each calculation · not to medical scale
Monitor Distance: Position your screen 50–70 cm from your eyes. At arm's length (roughly 60 cm) is the standard ergonomic recommendation to reduce eye strain.
Adjustable Desk Range for Your Height
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Ergonomic Tips for Your Setup
Elbows at 90–100°: Your forearms should be roughly parallel to the floor when typing. Adjust chair height or desk height until you reach this angle.
Monitor at or below eye level: The top edge of your screen should align with your eyes so you look slightly downward, preventing neck extension and cervical strain.
Lumbar support at L3–L4: Your chair's backrest curve should support your lower back at the 3rd–4th lumbar vertebra, roughly at waist level, to maintain the natural spinal S-curve.
Feet flat on the floor: If your feet do not reach the floor comfortably, use an adjustable footrest. Dangling feet reduce circulation and increase fatigue within 30 minutes.
Neutral neck posture: Keep your chin parallel to the floor, not jutting forward. Every inch of forward head posture adds ~10 lbs of effective load on the cervical spine.
Ergonomic Angle Rules
Elbows
90–100°
When typing
Knees
90–110°
When seated
Neck
Neutral
Chin level
Back
100–110°
Recline angle
Hips
90–120°
Hip-to-thigh
Wrists
Flat
No extension
Ergonomic Desk Height Reference Table
Standard ergonomic measurements for common height ranges. Your calculated height will be highlighted.
| Person Height | Sitting Desk | Chair Height | Standing Desk |
|---|---|---|---|
| 152 cm (5'0") | 64 cm | 41 cm | 96 cm |
| 160 cm (5'3") | 67 cm | 43 cm | 101 cm |
| 168 cm (5'6") | 71 cm | 45 cm | 106 cm |
| 175 cm (5'9") | 74 cm | 47 cm | 110 cm |
| 183 cm (6'0") | 77 cm | 49 cm | 115 cm |
| 191 cm (6'3") | 80 cm | 52 cm | 120 cm |
What is the Desk Height Calculator?
The Desk Height Calculator is a free ergonomics tool that uses your body height to compute personalised workstation measurements — including sitting desk height, chair seat height, monitor eye level, and standing desk height. Poor workstation ergonomics is a leading cause of musculoskeletal disorders (MSDs) in office workers, according to the World Health Organisation (WHO) and the Occupational Safety and Health Administration (OSHA). Studies indicate that incorrectly set desk heights contribute directly to neck pain, lower-back pain, shoulder tension, and carpal tunnel syndrome. OSHA's ergonomics guidelines recommend that all desk surfaces be adjustable to individual body dimensions rather than fixed at a universal height. This calculator applies evidence-based anthropometric ratios to give you a customised setup that helps reduce injury risk, improve comfort, and increase productivity during long working hours. Whether you are setting up a home office, corporate workstation, or a height-adjustable standing desk, these measurements give you a scientifically grounded starting point.
How to Use the Desk Height Calculator
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1
Select your unit system — choose Metric (cm) or Imperial (ft + in) using the toggle at the top of the calculator.
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2
Enter your height — type your total standing height in the input field. For imperial, enter feet and inches separately.
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3
Choose a desk type — select Sitting Desk, Standing Desk, or Both to see the relevant measurements for your workstation configuration.
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4
Click Calculate — your personalised ergonomic measurements will appear instantly, including a tips panel and the adjustable desk range suited to your height.
Why Desk Height Matters for Your Health
Office workers spend an average of 6–8 hours per day at a desk. When desk and chair heights are not matched to individual body proportions, the resulting awkward postures place cumulative stress on muscles, tendons, and joints. The most common consequences include:
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Repetitive Strain Injury (RSI): A desk that is too high forces the shoulders to elevate continuously while typing, causing chronic tension in the trapezius and rhomboid muscles. RSI affects over 1.8 million workers annually in the US alone.
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Neck and upper-back pain: A monitor positioned too low forces prolonged neck flexion. Each inch of forward head posture adds approximately 10 pounds of effective gravitational load on the cervical spine.
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Carpal tunnel syndrome: Wrist extension caused by a desk at the wrong height increases pressure on the median nerve in the carpal tunnel. An ergonomically set desk allows the wrists to remain flat and neutral while typing.
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Lower-back pain: A chair set too low or too high disrupts the natural lumbar curve. Chronic lower-back pain is the single leading cause of disability worldwide, according to the Global Burden of Disease study.
Sitting vs Standing Desk — Which is Better?
Both postures have merits and drawbacks. The current consensus among occupational health researchers is that neither sitting all day nor standing all day is optimal.
Sitting Desk
- + Lower cardiovascular strain for sedentary tasks
- + Better fine-motor stability for detailed work
- − Prolonged sitting linked to metabolic syndrome
- − Increases disc compression in lumbar spine
Standing Desk
- + Reduces lower-back pain and fatigue
- + Improves circulation and caloric expenditure
- − Prolonged standing causes varicose veins
- − Greater leg and foot fatigue over time
Expert recommendation: Alternate between sitting and standing every 30 minutes. Use a height-adjustable desk set to both your optimal sitting and standing heights. Pair standing periods with an anti-fatigue mat to reduce plantar fascia strain.
Ergonomic Setup Visual Guide
An annotated reference for ideal seated workstation posture, reading from top to bottom:
Practical Example: Person 175 cm Tall
For a person who is 175 cm (5'9") tall, the ergonomic calculator produces the following measurements:
Sitting Desk Height
73.5 cm
175 × 0.42 = 73.5 → rounded to nearest 0.5
Chair Seat Height
47.3 cm
175 × 0.27 = 47.25 → 47.3 cm
Monitor Eye Level (Seated)
103.3 cm
175 × 0.59 = 103.25 → 103.3 cm
Standing Desk Height
110.3 cm
175 × 0.63 = 110.25 → 110.3 cm
Frequently Asked Questions
What is the ideal desk height?
The ideal sitting desk height is approximately 42% of your total body height. For a person who is 175 cm (5'9") tall, that works out to about 73–74 cm. For a standing desk, the ideal height is roughly 63% of body height, placing the surface at elbow level when standing upright with relaxed shoulders. These ratios are derived from large-scale anthropometric studies used by OSHA and ISO 9241 ergonomics standards.
How do I measure desk height?
Measure from the floor to the top surface of the desk using a tape measure. For a practical check: sit in your chair with feet flat on the floor, back straight, and elbows bent at 90°. The desk surface should align with your forearms. If it does not, adjust the chair or add a monitor stand / keyboard tray as needed.
Should I use a standing desk?
Standing desks offer real benefits including reduced lower-back pain, improved posture, and better metabolic health. However, standing all day is equally harmful, causing varicose veins, leg fatigue, and plantar fasciitis. Health experts recommend alternating between sitting and standing every 30 minutes and using an anti-fatigue mat during standing periods.
What chair height is right for me?
The correct chair seat height is approximately 27% of your total height (the popliteal height — the distance from the floor to the back of the knee when seated). For a 175 cm person, that is about 47 cm. Your feet should rest flat on the floor with thighs roughly parallel to the ground and no pressure on the underside of your thighs.
How high should my monitor be?
The top edge of your monitor screen should sit at or slightly below your seated eye level, which is approximately 59% of your total height from the floor. For a 175 cm person, that is around 103 cm. Position the monitor 50–70 cm from your eyes (roughly arm's length) and tilt it back 10–20° to reduce glare and neck strain.
Can I use a footrest if my chair is too high?
Yes — a footrest is strongly recommended by OSHA when your chair must be raised to reach the correct desk height and your feet no longer sit flat on the floor. A footrest maintains the proper 90–110° knee angle, supports circulation in the lower limbs, and prevents pressure on the underside of the thighs, which can restrict blood flow and cause numbness.