How to Size Barefoot Shoes
| Step |
What to Do |
Why It Matters |
| 1. Measure foot length |
Stand on paper, heel to longest toe, in the afternoon |
Feet swell during the day and after activity |
| 2. Measure foot width |
Measure across the widest part of the forefoot, at the ball of the foot |
Wide toe box is the core of barefoot fit |
| 3. Add toe room |
Add 0.2–0.4 in (5–10 mm) to foot length for shoe internal length |
Toes need room to spread and push off naturally |
| 4. Check width |
Choose the size whose internal width is at least your foot width + 0.1–0.2 in |
Prevents toe squeeze and pressure points |
| 5. Zero drop |
No heel lift; heel and toe sit at the same height |
Encourages natural posture and calf/foot loading |
Men's Barefoot Walking & Everyday Shoes
| US Men's |
EU |
UK |
Foot Length (in) |
Foot Length (cm) |
Foot Width (in) |
Foot Width (cm) |
Recommended Internal Length (in) |
| 7 |
40 |
6.5 |
9.63 |
24.4 |
3.54–3.74 |
9.0–9.5 |
9.83–10.03 |
| 8 |
41 |
7.5 |
9.94 |
25.4 |
3.62–3.82 |
9.2–9.7 |
10.14–10.34 |
| 9 |
42.5 |
8.5 |
10.25 |
26.0 |
3.70–3.90 |
9.4–9.9 |
10.45–10.65 |
| 10 |
44 |
9.5 |
10.56 |
26.9 |
3.78–3.98 |
9.6–10.1 |
10.76–10.96 |
| 11 |
45 |
10.5 |
10.94 |
27.9 |
3.86–4.06 |
9.8–10.3 |
11.14–11.34 |
| 12 |
46 |
11.5 |
11.25 |
28.6 |
3.94–4.14 |
10.0–10.5 |
11.45–11.65 |
| 13 |
47.5 |
12.5 |
11.56 |
29.4 |
4.02–4.22 |
10.2–10.7 |
11.76–11.96 |
| 14 |
48.5 |
13.5 |
11.88 |
30.2 |
4.10–4.30 |
10.4–10.9 |
12.08–12.28 |
| 15 |
49.5 |
14.5 |
12.19 |
31.0 |
4.18–4.38 |
10.6–11.1 |
12.39–12.59 |
Women's Barefoot Walking & Everyday Shoes
| US Women's |
EU |
UK |
Foot Length (in) |
Foot Length (cm) |
Foot Width (in) |
Foot Width (cm) |
Recommended Internal Length (in) |
| 5 |
35.5 |
3 |
8.50 |
21.6 |
3.15–3.35 |
8.0–8.5 |
8.70–8.90 |
| 6 |
36.5 |
4 |
8.88 |
22.5 |
3.23–3.43 |
8.2–8.7 |
9.08–9.28 |
| 7 |
37.5 |
5 |
9.25 |
23.5 |
3.31–3.51 |
8.4–8.9 |
9.45–9.65 |
| 8 |
38.5 |
6 |
9.50 |
24.1 |
3.39–3.59 |
8.6–9.1 |
9.70–9.90 |
| 9 |
40 |
7 |
9.88 |
25.1 |
3.47–3.67 |
8.8–9.3 |
10.08–10.28 |
| 10 |
41 |
8 |
10.19 |
25.9 |
3.55–3.75 |
9.0–9.5 |
10.39–10.59 |
| 11 |
42 |
9 |
10.50 |
26.7 |
3.63–3.83 |
9.2–9.7 |
10.70–10.90 |
| 12 |
43 |
10 |
10.88 |
27.6 |
3.71–3.91 |
9.4–9.9 |
11.08–11.28 |
Barefoot Hiking Boots
| US Men's |
US Women's |
EU |
Foot Length (in) |
Foot Length (cm) |
Foot Width (in) |
Recommended Internal Length (in) |
Best For |
| 7 |
8.5 |
40 |
9.63 |
24.4 |
3.54–3.74 |
9.93–10.13 |
Day hikes, light trail |
| 8 |
9.5 |
41 |
9.94 |
25.4 |
3.62–3.82 |
10.24–10.44 |
Day hikes, mixed terrain |
| 9 |
10.5 |
42.5 |
10.25 |
26.0 |
3.70–3.90 |
10.55–10.75 |
Technical trail, long day hikes |
| 10 |
11.5 |
44 |
10.56 |
26.9 |
3.78–3.98 |
10.86–11.06 |
Backpacking, rocky terrain |
| 11 |
12.5 |
45 |
10.94 |
27.9 |
3.86–4.06 |
11.24–11.44 |
Backpacking, cold weather |
| 12 |
13.5 |
46 |
11.25 |
28.6 |
3.94–4.14 |
11.55–11.75 |
Multi-day hikes |
| 13 |
14.5 |
47.5 |
11.56 |
29.4 |
4.02–4.22 |
11.86–12.06 |
Expedition, heavy loads |
Kids' Barefoot Shoes
| US Child |
Age |
EU |
Foot Length (in) |
Foot Length (cm) |
Foot Width (in) |
Recommended Internal Length (in) |
| 6C |
2–3Y |
22 |
5.50 |
14.0 |
2.36–2.56 |
5.70–5.90 |
| 8C |
3–4Y |
25 |
6.13 |
15.6 |
2.52–2.72 |
6.33–6.53 |
| 10C |
4–5Y |
27 |
6.63 |
16.8 |
2.68–2.88 |
6.83–7.03 |
| 12C |
5–6Y |
30 |
7.13 |
18.1 |
2.83–3.03 |
7.33–7.53 |
| 1Y |
6–7Y |
32 |
7.75 |
19.7 |
2.99–3.19 |
7.95–8.15 |
| 2Y |
7–8Y |
33 |
8.13 |
20.6 |
3.15–3.35 |
8.33–8.53 |
| 3Y |
8–9Y |
34 |
8.50 |
21.6 |
3.31–3.51 |
8.70–8.90 |
| 4Y |
9–10Y |
35 |
8.88 |
22.5 |
3.39–3.59 |
9.08–9.28 |
Barefoot Socks & Toe Socks
| Sock Size |
US Men's Shoe |
US Women's Shoe |
EU |
Foot Length (in) |
Foot Length (cm) |
| S |
4–6.5 |
5–7.5 |
35–38 |
8.5–9.25 |
21.5–23.5 |
| M |
7–9.5 |
8–10.5 |
39–42 |
9.25–10.25 |
23.5–26.0 |
| L |
10–12.5 |
11–13.5 |
43–46 |
10.25–11.25 |
26.0–28.5 |
| XL |
13–15 |
14–16 |
47–50 |
11.25–12.25 |
28.5–31.0 |
Insoles & Footbed Guide
| Insole Size |
Fits US Men's |
Fits US Women's |
Insole Length (in) |
Insole Length (cm) |
Insole Width (in) |
| S |
4–6 |
5–7 |
9.0–9.5 |
23–24 |
3.3–3.5 |
| M |
6.5–8.5 |
7.5–9.5 |
9.5–10.2 |
24–26 |
3.5–3.7 |
| L |
9–11 |
10–12 |
10.2–11.0 |
26–28 |
3.7–3.9 |
| XL |
11.5–13.5 |
12.5–14.5 |
11.0–11.8 |
28–30 |
3.9–4.1 |
* All measurements are foot measurements, not shoe flat measurements. Measure both feet and use the larger foot.
* Barefoot shoes are designed with a wide toe box and zero drop. The internal width should be at least your foot width plus 0.1–0.2 in (3–5 mm) so toes can spread.
* Add 0.2–0.4 in (5–10 mm) of toe room to your foot length. For hiking and long-distance walking, 0.4 in (10 mm) is recommended for downhill toe clearance.
* If you are between sizes, size up. A slightly larger barefoot shoe is safer than a tight one, especially for beginners transitioning from cushioned shoes.
* Transition gradually: start with 1–2 hours per day and increase over 2–4 weeks to allow feet and calves to adapt to zero drop.
* Wide feet: choose the size that matches your foot width first, then check length. Do not size up only for width if the length becomes too long.
* Kids' barefoot shoes: leave 0.3–0.4 in (8–10 mm) of growth room, but check that the heel is secure and the child can walk without tripping.
* Socks: toe socks and thin barefoot socks should fit snugly without bunching. Match by shoe size and foot length.
* Actual fit may vary by style, upper material, and removable insole thickness. Follow product page notes for specific fit guidance.
