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​​Watch strap measuring guide

Watch strap size is determined by the width of the band end that attaches on the watch. Watches come in many different sizes, therefore the width of the watch strap can very as well. To determine the appropriate watch strap size for your watch, measure it’s lug width.

Lug width = the width of your strap at the point where it attaches to the watch, also known as the lugs. This is always measured in Millimeters. Conversion: 1cm = 10mm

(See diagram below)


HOW to find your watch strap size



  1. Use a metric ruler to measure the distance between the inside of the lugs in millimeters (mm).

  2. Measure the space between your watches lugs. (See the "Inner Space" in image)

  3. Once you have the measurement in Centimeters, move the decimal one place to the right to convert your measurement into Millimeters. 

Congratulations! You now know what size band your watch accepts and are ready to find the perfect new strap. Click Here, to shop now!

Find the lug size of Panerai Watch by case size


  • 40mm case: 20mm or 22mm lug width (Use a ruler with MM demarcations to see which)

  • 42mm case: 22mm lug width

  • 44mm case: 24mm lug width

  • 47mm case: 26mm lug width (Radiomirs can use 27mm as well, we suggest sticking with 26mm)

 (Applies to Panerai watch only)  

If you have trouble to find out the lug size of your watch, please contact us

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