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How to Measure Your Watch Bracelet Size: Lug Width, Length, and Buckle

Choosing a watch strap without knowing the correct measurements is like buying shoes without knowing your size. A strap that is too wide will float between the lugs; a strap that is too short will constrict your wrist. Here is our complete measurement guide.Lug width: the essential measurementLug width is the distance in millimeters between the two lugs of your watch. This is THE measurement you need to know first.How to measure it: Place a rigid ruler between the two inner lugs of your watch. Measure to the nearest millimeter. Common sizes are 18, 19, 20, 21, 22, and 24 mm.Caution: Do not rely on the case diameter. A 40 mm watch can have a lug width of 20 mm or 22 mm.Lug widths by brand Rolex Submariner, GMT-Master, Daytona: 20 mm Omega Speedmaster Professional: 20 mm Panerai Luminor: 24 mm Tudor Black Bay: 22 mm IWC Portugieser: 20 or 22 mm If in doubt, contact our experts with a photo of your watch.Wrist circumference: choosing the right lengthMeasure your wrist with a flexible tape measure, without tightening, just above the wrist bone. Slim wrist (less than 16 cm): short length — 105/65 mm Medium wrist (16 to 19 cm): standard length — 115/75 mm Large wrist (more than 19 cm): long length — 120-130/80 mm Most of our calfskin leather straps are available in several lengths.Buckle widthMost straps taper between the lug and the buckle. Measure the width where the buckle inserts. Common ratios: 20/16, 20/18, 22/18, 24/22.Discover our range of buckles and clasps.Special cases: watches with insertsPatek Philippe Nautilus, Audemars Piguet Royal Oak, and certain Hublot models use proprietary attachment systems with metal inserts. MisterChrono offers custom solutions with inserts for these watches.Types of buckles Pin buckle: classic, simple, lightweight Single folding clasp: protects the leather from daily creasing Butterfly folding clasp: the most comfortable and secure Frequently asked questionsHow to measure lug width without a special tool?Use a standard ruler placed between the two inner lugs. Avoid flexible tape measures that can slip.Can I put a 20 mm strap on a 21 mm lug width?A 1 mm difference is acceptable. A difference of 2 mm or more will be visible and risks causing lateral movement.Is the length the same for men and women?No. Women's wrists: 14-16 cm, men's: 16-20 cm. For small wrists, choose short lengths (105/65 mm).Need help? Browse our selection or contact our experts. Free delivery in France for orders over 80 €.