Upgrading your watch with a new leather, NATO, or metal strap starts with the perfect measurement. Our Watch Strap Calculator helps you identify your watch's 'lug width'—the space between the case horns where the strap attaches. We also provide a length guide based on your wrist size, ensuring you avoid overly long straps or uncomfortably tight fits. It's the essential tool for watch enthusiasts and collectors.
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Watch Strap Fitting Tool
Determine the correct watch strap width (lug width) and band length based on your case size and wrist circumference. Fast, free, and 100% private browser tool.
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About Watch Strap Fitting Tool
1
Measure Lug Width
Measure the gap between the watch's 'lugs' in mm.
2
Measure Wrist
Enter your wrist circumference for length recommendations.
3
Review Results
Verify the output looks correct before using or downloading it.
4
Save Your Output
Click the download or copy button to export your results to your device or clipboard.
Key Features
Lug Width Database
Identify common widths like 18mm, 20mm, and 22mm for your timepiece.
Band Length Estimator
Recommends total strap length (long/short side) based on your wrist circumference.
Taper Analytics
Explains how strap taper (e.g., 20mm to 16mm) affects buckle size requirements.
Frequently Asked Questions
18mm, 20mm, and 22mm are the most standard sizes for modern watches.
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