RM Williams Sizing Guide: Full Size Chart & Fit Tips for 2026
Getting the perfect fit is everything with RM Williams boots – these iconic Australian Chelsea boots are built to last decades, but only if sized right. This complete guide shows you how to measure your feet, read the size charts, understand width options, and avoid the most common sizing mistakes.
How to Measure Your Feet for RM Williams Boots
RM Williams boots, especially the classic Craftsman and Comfort Craftsman, fit differently depending on the model and leather type. The key is measuring your foot length accurately while wearing the socks you’ll pair with the boots.
Step 1: Gather Tools
Paper, pencil, ruler/tape measure, and the socks you normally wear with boots (thick socks add ~0.5 cm).
Step 2: Trace Your Foot
Stand on paper against a wall. Trace around your foot, keeping the pencil vertical. Measure from heel to longest toe in millimeters.
Step 3: Measure Both Feet
Use the larger measurement – most people have one foot slightly bigger.
Step 4: Add Allowance
Add 10–15 mm for comfort (RM Williams recommend ~1 cm for regular fit).
Many owners say: measure in the evening when feet are slightly swollen for the most accurate fit.
RM Williams Size Chart – Men’s & Women’s
RM Williams uses UK sizing as primary, with US and EU conversions. Here’s the official-style chart based on foot length:
| UK Size | US Size (Men) | US Size (Women) | EU Size | Foot Length (mm) |
|---|---|---|---|---|
| 6 | 7 | 8 | 39.5 | 250–255 |
| 6.5 | 7.5 | 8.5 | 40 | 255–260 |
| 7 | 8 | 9 | 41 | 260–265 |
| 7.5 | 8.5 | 9.5 | 41.5 | 265–270 |
| 8 | 9 | 10 | 42 | 270–275 |
| 8.5 | 9.5 | 10.5 | 42.5 | 275–280 |
| 9 | 10 | 11 | 43 | 280–285 |
| 9.5 | 10.5 | 11.5 | 44 | 285–290 |
| 10 | 11 | 12 | 44.5 | 290–295 |
| 10.5 | 11.5 | – | 45 | 295–300 |
| 11 | 12 | – | 46 | 300–305 |
| 12 | 13 | – | 47 | 310–315 |
Note: Comfort Craftsman often feels roomier due to extra padding – many size down half a size if between.
Width Options: Narrow, Regular, Wide
RM Williams offers three widths (especially in Comfort Craftsman):
Pro tip: If your foot width measures over 105 mm at the widest point, consider H-wide.
Comfort Craftsman vs Classic Craftsman Fit
The Comfort Craftsman has added cushioning and a slightly roomier toe box – many users size down ½ from their regular size. Classic Craftsman runs truer to size but breaks in over time.
Real owner feedback: “Comfort Craftsman feels like wearing slippers after break-in – sized down half from my usual.”
Common RM Williams Sizing Mistakes to Avoid
- Buying too small – leather stretches, but not enough for painful fits.
- Ignoring width – Regular (G) is default, but wide feet suffer in it.
- Not measuring both feet – the larger one wins.
- Skipping socks in measurement – thick socks change everything.
- Expecting immediate comfort – RM boots need 1–2 weeks break-in.
RM Williams Sizing FAQs
Do RM Williams boots run true to size?
Mostly yes for Classic Craftsman; Comfort Craftsman often feels half size larger – many size down.
What if I’m between sizes?
Go with the smaller if you want snug; larger for thicker socks or swelling.
Men’s vs Women’s sizing differences?
Women’s models often have narrower lasts – check specific guides for womens boots.
Can I exchange if the size is wrong?
Most retailers allow returns/exchanges within 30–60 days if unworn.
Disclaimer: Sizing is personal – always try on if possible or buy from retailers with good returns. Affiliate links may be used; opinions based on owner reviews and research.