Office Chair Size Calculator
Get personalized chair dimension recommendations
Or enter in centimeters below
Or enter in kilograms below
Standard desk height is 28-30 inches
Helps determine support and recline needs
Your Results
Seat Height Range
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Minimum Seat Width
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Seat Depth Range
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Min. Weight Capacity
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Recommended Chair Categories
Ergonomic Tips Based on Your Profile
These calculations are estimates based on ergonomic guidelines and industry standards. Individual needs may vary.
Why Chair Size Matters for Ergonomics
An improperly sized office chair is one of the leading causes of workplace discomfort and musculoskeletal problems. Studies show that workers who use chairs matched to their body dimensions report 40% less back pain and 30% higher productivity. Our calculator uses established ergonomic formulas to determine your ideal seat height, width, depth, and weight capacity requirements.
How Our Chair Size Calculator Works
Enter Your Measurements
Input your height and weight in your preferred units. We support both imperial (feet/inches, pounds) and metric (centimeters, kilograms) measurements.
Ergonomic Calculation
Our algorithm calculates your lower leg length, thigh length, and body build to determine optimal seat dimensions using proven ergonomic formulas.
Get Recommendations
Receive personalized seat dimensions, weight capacity requirements, recommended chair categories, and ergonomic tips specific to your body type.
Understanding Office Chair Measurements
Seat Height
The distance from the floor to the top of the seat cushion. Proper seat height allows your feet to rest flat on the floor with thighs parallel to the ground.
Formula: Lower leg length (floor to knee) ≈ Height × 0.245
Ideal range: 2-4 inches below knee height
Seat Width
The distance across the seat from side to side. Should accommodate your hips with 1-2 inches of clearance on each side for comfort.
Standard range: 17-22 inches for most users
Big & Tall: 22-26+ inches recommended
Seat Depth
The distance from the front edge of the seat to the backrest. Should support your thighs while leaving 2-4 inches between seat edge and back of knees.
Formula: Thigh length ≈ Height × 0.24
Adjustment: Subtract 2-4 inches for proper fit
Weight Capacity
The maximum weight the chair can safely support. Always choose a chair rated for at least 50 lbs above your body weight for durability and safety.
Standard chairs: 250-275 lbs capacity
Heavy-duty: 300-500+ lbs capacity
Special Sizing Considerations
📏 Tall Users (6'2"+)
- • Look for extended seat depth (18"+ seat pan)
- • Higher maximum seat height (20"+ range)
- • Taller backrests (24"+ for upper back support)
- • Consider "Big & Tall" category chairs
🪑 Petite Users (Under 5'4")
- • Shorter seat depth (15-17") to avoid knee pressure
- • Lower minimum seat height (15-16")
- • Consider a footrest if needed
- • "Petite" or compact chair models
💪 Plus Size Users
- • Wider seats (22"+ between armrests)
- • Higher weight capacity (300-500+ lbs)
- • Reinforced base and gas cylinder
- • Heavy-duty casters rated for weight
⏰ Long Session Users (8+ hrs)
- • Adjustable lumbar support essential
- • Breathable mesh back material
- • 4D adjustable armrests
- • Quality foam cushion (high-density 50+kg/m³)
Quick Office Chair Size Reference Guide
| Your Height | Seat Height | Seat Depth | Chair Type |
|---|---|---|---|
| Under 5'0" (152cm) | 14" - 17" | 14" - 16" | Petite/Compact |
| 5'0" - 5'4" (152-163cm) | 15" - 18" | 15" - 17" | Standard/Task |
| 5'4" - 5'10" (163-178cm) | 16" - 19" | 16" - 18" | Standard/Executive |
| 5'10" - 6'2" (178-188cm) | 17" - 20" | 17" - 19" | Executive/Tall |
| Over 6'2" (188cm+) | 18" - 22" | 18" - 21" | Big & Tall |
Frequently Asked Questions
How do I measure my current chair to compare sizes?
To measure your current chair: Seat height - measure from the floor to the highest point of the seat cushion. Seat width - measure the widest part of the seat between the armrests. Seat depth - measure from the front edge of the seat to the backrest. Compare these to our recommended dimensions for your body type.
What if I'm between sizes or weight categories?
When between sizes, generally choose the larger option for seat width and weight capacity, and go with adjustable features for height and depth. Chairs with adjustable seat depth sliders are ideal for borderline cases. For weight capacity, always round up to the next tier for durability and warranty considerations.
Does desk height affect which chair I should choose?
Yes! The ideal relationship between seat and desk height is 10-12 inches. If your desk is 30" high, your seat should be around 18-20" high. If you have a fixed-height desk that's too tall for standard chairs, consider a drafting chair with extended height range or invest in a height-adjustable desk.
Should gaming chairs be sized differently than office chairs?
Gaming chairs often have bucket-style seats that run narrower than traditional office chairs. If choosing a gaming chair, add 1-2 inches to your recommended seat width. Gaming chairs also typically have more aggressive side bolsters, so ensure there's adequate hip room. The same seat height and depth guidelines apply.