Size & Fit Guide
Brooks Sizing Chart
Footwear, apparel, run bras and gear measurements in one place. Sizes are shown in US unless a column says otherwise, so you can order your usual size with confidence.
1
Women's Footwear
Road, trail and racing shoes share the same women's last. Brooks recommends ordering running shoes a half to one full size larger than your everyday dress shoe, leaving about a thumb's width of space ahead of your longest toe.
Women's Shoes — Size Conversion
Women's footwear size conversion for US, UK and EU
| US |
UK |
EU |
| 5 |
3 |
35.5 |
| 5.5 |
3.5 |
36 |
| 6 |
4 |
36.5 |
| 6.5 |
5.5 |
37.5 |
| 7 |
5 |
38 |
| 7.5 |
5.5 |
38.5 |
| 8 |
6 |
39 |
| 8.5 |
6.5 |
40 |
| 9 |
7 |
40.5 |
| 9.5 |
7.5 |
41 |
| 10 |
8 |
42 |
| 10.5 |
8.5 |
42.5 |
| 11 |
9 |
43 |
| 11.5 |
9.5 |
44 |
| 12 |
10 |
44.5 |
| 12.5 |
10.5 |
45 |
| 13 |
11 |
45.5 |
2
Men's & Unisex Footwear
Unisex styles follow men's sizing by industry standard. To switch between the two, take your women's size and subtract 1.5 to reach the men's equivalent — a women's 8.5 is a men's 7.
Men's & Unisex Shoes — Size Conversion
Men's and unisex footwear size conversion for US, UK and EU
| US |
UK |
EU |
| 5 |
4 |
37.5 |
| 5.5 |
4.5 |
38 |
| 6 |
5 |
38.5 |
| 6.5 |
5.5 |
39 |
| 7 |
6 |
40 |
| 7.5 |
6.5 |
40.5 |
| 8 |
7 |
41 |
| 8.5 |
7.5 |
42 |
| 9 |
8 |
42.5 |
| 9.5 |
8.5 |
43 |
| 10 |
9 |
44 |
| 10.5 |
9.5 |
44.5 |
| 11 |
10 |
45 |
| 11.5 |
10.5 |
45.5 |
| 12 |
11 |
46 |
| 12.5 |
11.5 |
46.5 |
| 13 |
12 |
47.5 |
| 14 |
13 |
48.5 |
| 15 |
14 |
49.5 |
| 16 |
15 |
50.5 |
3
Shoe Width
Most styles are built on a Medium last, with a Wide option for a roomier forefoot at the same length. Width is selected on the product page, so match the letter to the fit you need rather than going up a size.
Width Equivalents
Shoe width equivalents across all-gender, men's and women's fits
| Width |
All-Gender |
Men's |
Women's |
| Narrow |
B |
B |
2A |
| Medium |
D |
D |
B |
| Wide |
2E |
2E |
D |
| Extra Wide |
4E |
4E |
2E |
-
Medium is the standard fit on most styles
-
Wide adds girth at the same length
-
Width is a separate option from size
4
Women's Apparel
Body measurements for tops, bottoms, tights and jackets. Most pieces are semi-fitted; tights and base layers are fitted, so size to the fit you prefer. Inseam stays the same across sizes for a given style.
Women's Body Measurements — inches
Women's apparel body measurements in inches
| Size |
Bust |
Waist |
Hip |
Inner Leg |
| XS (0–2) |
30.5–32.5 |
24–26 |
33.5–35.5 |
31 |
| S (4–6) |
32.5–34.5 |
26–28 |
35.5–37.5 |
31 |
| M (8–10) |
34.5–36.5 |
28–30 |
37.5–39.5 |
31 |
| L (12–14) |
37.5–39.5 |
31–33 |
40.5–42.5 |
31 |
| XL (16–18) |
40.5–43 |
34–37 |
43.5–46 |
31 |
| XXL (20–22) |
43–47 |
38.5–41.5 |
46–50 |
31 |
Length options: petite inner leg is 29″ and tall inner leg is 33″, with 31″ as the regular length.
5
Men's Apparel
Body measurements for tees, singlets, shorts, tights and jackets. If you sit between two sizes, use your chest measurement first — it drives the fit of most tops.
Men's Body Measurements — inches
Men's apparel body measurements in inches
| Size |
Chest |
Waist |
Inner Leg |
| XS |
33–35 |
28–30 |
32 |
| S |
35–37 |
30–32 |
32 |
| M |
37–39 |
31.5–33.5 |
32 |
| L |
40–42 |
34.5–36.5 |
32 |
| XL |
43–45 |
37.5–40 |
32 |
| XXL |
46–49 |
41–44 |
32 |
Length options: short inner leg is 30″ and tall inner leg is 34″, with 32″ as the regular length.
6
Run Bras
Bra sizing is expressed as a band range plus a cup grouping (“AB” or “CD”), then mapped to letters. If you sit between two sizes, round up to the larger one.
A/B Cup
Run bra sizing for A and B cups
| Size |
US |
Euro |
AU |
| XS |
30AB–32A |
65AB–70A |
8AB–10A |
| S |
32AB–34A |
70AB–75A |
10AB–12A |
| M |
34AB–36A |
75AB–80A |
12AB–14A |
| L |
36AB–38A |
80AB–85A |
14AB–16A |
| XL |
38AB–40A |
85AB–90A |
16AB–18A |
C/D Cup
Run bra sizing for C and D cups
| Size |
US |
Euro |
AU |
| XS |
30CD–32C |
65CD–70C |
8ACD–10C |
| S |
32CD–34C |
70CD–75C |
10CD–12C |
| M |
34CD–36C |
75CD–80C |
12CD–14C |
| L |
36CD–38C |
80CD–85C |
14CD–16C |
| XL |
38CD–40C |
85CD–90C |
16CD–18C |
Find Your Band & Cup
How rib cage and bust measurements convert to band and cup size
| Rib Cage |
Band |
Bust − Rib Cage |
Cup |
| 25″–26″ |
30 |
3″ |
AA |
| 27″–28″ |
32 |
4″ |
A |
| 29″–30″ |
34 |
5″ |
B |
| 31″–32″ |
36 |
6″ |
C |
| 33″–34″ |
38 |
7″ |
D |
| 35″–36″ |
40 |
8″ |
DD |
| 37″–38″ |
42 |
9″ |
E |
| 39″–40″ |
44 |
Round up if between |
— |
Example: a 30″ rib cage with a 37″ bust gives a 7″ difference — band 34, cup D, so a 34D.
7
Socks & Gloves
Socks are sized by shoe size, so use the column that matches the feet you are buying for. Gloves are sized by the length from your palm to your longest fingertip.
Socks
Sock size mapped to women's and men's shoe sizes
| Sock Size |
US Women's |
US Men's |
EU |
| S |
4–6.5 |
— |
34–37 |
| M |
7–9.5 |
6–8.5 |
38–41 |
| L |
10–12.5 |
9–11.5 |
42–45 |
| XL |
13 |
12–14.5 |
46–49 |
Gloves
Glove size by palm-to-fingertip length
| Size |
Palm to Fingertip |
| S |
7.5″ or less |
| M |
7.5″–8″ |
| L |
8″–9″ |
| XL |
9″ or larger |
Accessories: caps, visors, belts, bags and hydration pieces are generally one-size or capacity-based, so no numeric garment size applies. Check the product page for individual notes.
8
How to Measure Your Foot
Measure both feet and work from the larger one. It is simplest to do this late in the day, when your feet are at their fullest.
-
Trace your foot
Stand with your heel against a wall on a sheet of paper and trace the outline of your foot.
-
Mark the length
Measure from the back of your heel to the tip of your longest toe, then add about a thumb's width of space for running.
-
Measure the girth
Wrap the tape around the widest part across the ball of your foot to gauge the width you need.
-
Match your size
Compare your length to the table, then confirm the width letter. Repeat for the other foot.
Length runs heel to longest toe; width is measured across the ball of the foot.
9
Getting the Fit Right
A few rules of thumb that hold true across most running footwear and apparel.
Order running shoes up a touch
It is common to take running shoes a half to one full size larger than your everyday dress shoe, so your feet have room to expand on the run.
Wide feet? Pick the width
Choose the Wide or Extra Wide last rather than sizing up — adding length to gain girth can cause heel slip and a loose ride.
Between two sizes?
For footwear, round up for toe room. For apparel, use your chest or waist measurement and pick the fit you prefer.
Measure at the right time
Feet swell through the day, so measure in the late afternoon and always use the larger of your two feet.
Fit varies by fabric
Tights and base layers are built to be fitted and stretch with you, while woven tops and jackets have more room. Structured pieces move less.
Men's and women's conversion
Unisex styles follow men's sizing. Subtract 1.5 from a women's size to find the men's equivalent — women's 8.5 equals men's 7.
