Understanding Watch Strap Taper
Taper is the change in width from the lugs to the buckle end of a strap. Taper affects how the strap wears, looks, and balances the watch on your wrist. Use this guide to choose a taper that works for your watch and your preference.
Taper does not impact whether a strap fits your watch.
Not sure where to start? See the full strap sizing guide.
What taper means
Taper is written as two numbers: lug width followed by buckle width. For example, a 20/16 mm strap starts at 20 mm at the lugs and narrows to 16 mm at the buckle.
Straps may have:
- No taper (20/20 mm)
- Light taper (20/18 mm)
- Standard taper (20/16 mm)
- Heavy taper (20/14 mm)
How taper affects fit and appearance
Taper influences comfort, visual balance, and how the buckle sits on your wrist.
- More taper creates a slimmer, dressier profile and reduces bulk at the buckle.
- Less taper gives a sportier, more substantial look and can feel more secure on larger watches.
- No taper keeps a uniform width for maximum wrist presence and bracelet-like stability.
How to choose taper
Select taper based on your watch style, wrist size, and comfort preference.
For dress watches
Most dress watches pair best with standard or heavy taper (for example, 20/16 mm or 20/14 mm). This creates a refined, proportional look.
For sport or tool watches
Light taper or no taper (20/18 or 20/20) keeps the strap visually balanced with the case and provides a more robust feel.
For smaller wrists
A tapered strap reduces bulk and improves comfort, especially near the buckle.
For larger wrists
Less taper or no taper maintains stability and keeps the strap from feeling too narrow at the buckle.
About buckle compatibility
Buckle width is determined by the strap’s taper. A 20/16 mm strap requires a 16 mm buckle. If you are replacing a buckle or adding a deployant clasp, match it to the buckle-end size, not the lug width.
Common questions
Does taper change strap length?
No. Taper affects width, not length. Choose length based on wrist circumference.
Does more taper make a strap weaker?
No. Taper does not reduce structural strength. Material and construction determine durability.
Is heavier taper always dressier?
Generally yes. A stronger taper reduces visual bulk and suits thinner, more refined watches.
Will my existing buckle work with a new strap?
Only if the buckle-end width matches. For example, a 16 mm buckle will not fit an 18 mm buckle-end strap.