Size guide

Find your strap size

Two numbers, two minutes: your lug width and your wrist. We cut to order, so they become your strap.

The short version
18–22 mm

The lug width of most watches

Whole mm

Lug widths are almost never fractional

16.5–18.8 cm

Where most wrists fall — sizes M to L

We check

Send us your watch model and we’ll confirm before we cut

A watch case seen from above with no strap fitted, an arrow across the gap between the two lugs marking the lug width.
Part one

What lug width means

The gap between your watch’s lugs, in millimetres. Your strap has to match it exactly.

20 / 18 mm = 20 mm at the watch, 18 mm at the buckle. Only the first number has to match your watch.

Find your lug width

Check your old strap, look it up — or ask us.

The underside of a worn leather strap, with 20-18 stamped into the lining near the lug end.
On your strap

Check your old strap

Flip your strap over. The width is often printed inside — “20” or “20-18”.

A phone held in one hand showing a search for watch lug width, the results full of strap measurement diagrams.
Online

Look up your watch

Search your watch’s brand and model plus “lug width”.

The steel case back of a watch held between two fingers, engraved with its model number.
Ask the workshop

Let us look it up

Send us the brand and model. We’ll reply with the width — free.

Email us your model

Rather measure it yourself? All it takes is a ruler — see how ↓

A steel ruler laid flat across the lugs of a watch, lined up to read the gap from the inner edge of one lug to the inner edge of the other.
Measure it

Measure it yourself

A millimetre ruler is all you need — the strap can stay on.

  1. Bring a ruler to the lugs — hold the watch face up and lay a millimetre ruler across the gap, where the strap meets the case.

  2. Read inner edge to inner edge — round to the nearest whole millimetre. 19.6 is a 20.

Three easy mistakes

Case size isn’t lug width. 38–44 mm is the whole watch, not the gap.

Measure the inside edges. The outside edges add a few millimetres.

Lug-to-lug is a different number. Tip to tip, usually 38–52 mm — not for strap width.

Widths we cut

  • 12
  • 14
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 24
  • mm

Something in between, or an unusual buckle width? We cut to order — choose Custom size when you order and tell us your numbers.

Two hands holding a tan leather strap with its steel buckle, a millimetre ruler laid across the strap just below the buckle frame.
Keeping your own buckle?

Buckle width

Every strap comes with a buckle — skip this unless you’re keeping your own. It’s the 18 in 20 / 18 mm.

How to measure it: measure across the inside of the buckle frame and add it to your order note.

Design your own strap
Part two

Strap length

The long end has the holes, the short end has the buckle. 125 / 75 mm = 125 mm long, 75 mm short.

Measuring your wrist

Wrap a soft tape — or a paper strip — just above the wrist bone. Snug, not tight. Find your number below.

Size chart

WristSizeLong / Short
up to 15.0 cmXS/S100 / 60 mm
15.1 – 15.8 cmS105 / 65 mm
15.9 – 16.4 cmS/M110 / 65 mm
16.5 – 17.0 cmM115 / 70 mm
17.1 – 17.8 cmM/L120 / 70 mm
17.9 – 18.8 cmL125 / 75 mm
18.9 – 19.8 cmL/XL130 / 80 mm
19.9 – 20.8 cmXL135 / 85 mm
over 20.8 cmCustomTell us your numbers

Wrist in inches? Multiply by 2.54 to get centimetres.

Fine-tuning

Watch over 44 mm → one size shorter.

Like it loose → one size longer.

Between two sizes → take the larger, or choose Custom.

Questions

Do you make odd widths like 17, 19 or 21 mm?

Yes — they're in the width list, cut to the same standard as the even sizes.

My watch measures 19.5 mm. What do I order?

Measure once more from inner edge to inner edge — it is almost certainly 20. If it really sits between two sizes, choose Custom and we'll cut to your number.

What if my buckle end needs to be narrower?

That's normal — most straps taper. Pick the pair that matches both numbers, like 20 / 18 mm, or choose Custom for an unusual taper.

Top of the lugs or bottom?

On almost every watch the gap is the same all the way down. Measure where the strap sits, close to the case.

Tight or loose when I measure my wrist?

Snug — flat against the skin, not pulled tight. The chart already allows for a comfortable fit.

I'm between two sizes.

Take the larger one, or choose Custom and give us your exact lengths.

Can you make a size that isn't listed?

Yes. Every strap is cut to order, so any width or length is possible — choose Custom size when you order.

Send us your watch. We’ll do the measuring.

Not sure? Send us your watch model — we check before we cut.

Email us your watch