What Size Button Do I Need If I Don’t Have the Original?
Replacing a missing button can be difficult when the original size is no longer available.
Here are several practical ways to estimate the correct size.
Check the Garment Type
Most garments tend to follow fairly consistent button size ranges.
| Garment | Common Button Size |
|---|---|
| Shirts | 11.5–12.5 mm |
| Jackets | 18–23 mm |
| Coats | 23–25 mm or larger |
These ranges are not fixed rules, but they can provide a useful starting point when selecting replacement buttons.
Measure the Buttonhole
The button should usually be slightly larger than the buttonhole.
If the button is too small, it may slip out more easily. If it is too large, fastening may feel tight or difficult.
As a general guide, a button that is around 1–2 mm larger than the buttonhole is often suitable.
Use a Reference Object
If a ruler is not available, comparing the size with common objects such as coins can provide a rough estimate.
This method is not precise, but it can help narrow down the likely size range.
Consider Thickness
A replacement button should fit comfortably through the existing buttonhole.
If the replacement is significantly thicker than the original, fastening may feel tighter even when the diameter is similar.