Watch Strap Size Guide

Measuring correctly for your wrist size is critical to get the perfect fit for your watch strap. When I make straps for customers it’s important that I have these details in order for us to get the right fit. Everyone is different, not to mention some prefer slightly more or less leather to wrap the wrist through the buckle so it’s important that I work with everyone to get the right size. I can make your straps in any size, you simply measure up and let me know!

There are a few critical components:

Lug Width – the lug is where the strap meets the case of the watch and the lug width is the distance between the left and right ‘lugs’. Typically this is in the region of 18-24mm but straps come in all shapes and sizes

Buckle Width – this is the inside measurement of the buckle width where we will attach either your current buckle or a new one. I also supply buckles so I can recommend a taper (from lug to buckle) or use your current sizes

Length – there are two parts to the strap, the long part which has the buckle holes and the short part that has the buckle attached. I need the length of each of these, typically the standard size is 125/70mm which tends to fit the average sized wrist as an example. To measure this the easiest thing to do is measure a strap that you may already have that fits perfectly and send me these, or alternatively measure the circumference of your wrist with a tape measure or a piece of string to then measure and send me that figure and I can recommend. Please reference the notes below for size appropriate for your wrist

Measuring lug, buckle and length can simply be done with a ruler, but for more accurate measurements I suggest getting some digital calipers online which are very cheap but remarkably helpful if you think you’ll use them again in future. I couldn’t be without mine now!

Bear in mind that the size of the watch head also needs to be taken in to account and deducted from your wrist circumference. Most watch heads are typically 1-1.5″

For a size guide please reference the below and also note that you can simply contact me for any advice at all:

  • 5.6 – 6.0″ wrist (142 – 152mm) = 110/65
  • 6.1 – 6.5″ wrist (153 – 164mm) = 120/70
  • 6.6 – 7.0″ wrist (165 – 178mm) = 125/75 
  • 7.1 – 7.5″ wrist (179 – 190mm) = 130/80 
  • 7.6 – 8.0″ wrist (191 – 203mm) = 135/80
  • 8.1 – 8.5″ wrist (204 – 216mm) = 140/85
  • 8.6 – 9.0″ wrist (217 – 229mm) = 145/90



6 thoughts on “Watch Strap Size Guide

  1. Manny says:

    When measuring for a watch strap, I have a 6.5 inch wrist circumference. I’m not sure what size would be better …. a 120/70 or 125/75? I tend to think going smaller might work best only because there would be less extra material hanging off the strap. I’m sure both would work, but in your professional opinion, what do you think?

    • thealphabeta says:

      Thanks Manny. I would suggest for you that you have 105/65mm. I would make that bespoke for you to reduce the overhang, I too don’t like that! Feel free to email me and we can discuss. All the best, David

  2. Brad Fried says:

    I’m a bit confused on how to order your widths at the buckle end of the straps. You provide no mention of those widths on your ‘in stock ‘ offerings…. It’s a key measurement in my mind because as a collector of a wide range of watches from vintage to modern , the buckle widths can range from 12mm up to even 18mm … How does one specify that metric when ordering ? Am I missing something? Thanks , and anticipate a maybe ‘obvious’ answer to my question…

    • thealphabeta says:

      Hi Brad, thanks for getting in touch. Feel free to email me as well if needed. To answer the question on the product page I note the typical taper for each lug width so 20/16 (lug/buckle) as an example. That is the taper. That said, I can make it however you wish, that’s the beauty of handmade so you can just let me know what specs you require and I will make exactly that for you. I hope that helps, always available on email if you need me. David

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