Watch strap size guide

Find your perfect fit

Everything you need to choose the right sizes for your smartwatch strap.

1 Step 1 — Choose your smartwatch

Which smartwatch do you have?

2 Step 2 — Choose your strap size

What is your wrist circumference?

Size	Wrist circumference	Variant name
S	14.5 – 16 cm	14.5 - 16 cm (S)
M	16 – 17.5 cm	16 - 17.5 cm (M)
L	17.5 – 19 cm	17.5 - 19 cm (L)

💡 Between two sizes? Choose the smaller size for a snugger fit — ideal during sport or activity.

Choose the larger size for a looser fit — great for everyday wear.

Either size works perfectly — it's purely personal preference. Outside our sizes? We're happy to help with a custom size.

⚠️ Please note: After selecting your wrist size, you'll also need to choose your Watch case size in mm. That's covered in step 3, where you'll also find a handy guide to identifying your exact Watch model.

📏 Important: measure your wrist accurately Measuring carefully lets us determine the right size for you. Every Samsung watch has a different case size, and we use your wrist circumference to calculate the exact fit — so your strap sits like it was made for you.

Measure to one decimal place — for example, 15.7 cm.

⚠️ Important: In step 3, carefully check both your case size and your connector width. Together these determine whether the strap fits.

Size	Wrist circumference	Variant name
S	14.5 – 16 cm	14.5 - 16 cm (S)
L	16.5 – 18 cm	16.5 - 18 cm (L)

Size	Wrist circumference	Connector width
S	14.5 – 16 cm	20 mm or 22 mm
L	16.5 – 18 cm	20 mm or 22 mm

How to measure your wrist

Measure your wrist where you'd normally wear your watch.

Using a tape measure

Wrap the tape measure around your wrist, just above the wrist bone. Not too tight, not too loose — you should be able to fit one finger between the tape and your skin.

No tape measure?

Wrap a charging cable or strip of paper around your wrist and mark where it meets. Lay it flat and measure with a ruler.

3 Step 3 — Choose your connector size

Which exact model and size do you have?

Look up your exact Apple Watch model to find out which case size variant to select.

⚠️ Series 10 & 11 exception: If you have the 42mm → choose 38 / 40 / 41 mm | If you have the 46mm → choose 42 / 44 / 45 / 46 / 49 mm