How to Measure Your Foot Length and Width at Home
Skip the Brannock device. The paper-and-ruler method gives you accurate US, UK, EU, and JP shoe sizes — plus the width letter (D, E, EE) most online shoppers never check.
You order shoes online in your "usual size." They arrive. The length is right. Your forefoot bulges out the side seams. Or your heel slides up with every step.
Length is half the story. Width is the other half. Most online shoppers measure neither and rely on the size they remember from a Brannock device they last stepped on five years ago in a store. Feet change. Brand sizing varies. Width is the silent reason most online shoe orders fit wrong.
This guide shows you how to get accurate length and width measurements with a piece of paper and a ruler in under 5 minutes. Includes US, UK, EU, and JP conversion charts, the difference between regular (D), wide (E, EE), and extra-wide (EEE) widths, and the rule for picking the right size when length and width disagree.
Why Both Measurements Matter
Length determines size number. Width determines size letter (D, E, EE, EEE).
A US 9D shoe has a different forefoot width than a US 9E. The length is identical. The width difference is roughly 1/4 inch per letter. That sounds small. On your foot, it is the difference between comfortable and painful.
Most US shoes ship in D width by default for men and B width for women
Online shoe shopping fails when you only measure length. Online shoe shopping succeeds when you measure both.
What You Need
- A piece of paper bigger than your foot (printer paper works for most).
- A pen or pencil.
- A ruler with millimeter and inch markings.
- A flat hard floor.
- Tape (helpful).
That is the full list. No Brannock device. No special equipment.
The Best Time of Day to Measure
Feet swell during the day. Your foot at 8 AM is up to half a size smaller than your foot at 6 PM.
Three rules:
- Measure in the late afternoon or evening, when feet are at their largest.
- Measure standing, with full body weight on the foot. Sitting measurements are smaller and useless for shoe fit.
- Wear the socks you plan to wear with the shoes (thin dress socks for dress shoes, thick athletic socks for sneakers).
A morning measurement on a sock-less seated foot will give you a number that is half a size too small. That half size is the difference between a shoe that fits and a shoe that pinches by hour 4.
Method 1: The Paper and Ruler Method (Length)
Five steps.
Place paper on a hard floor against a wall
Tape it down so it doesn't slide while you stand on it.
Stand on the paper with full body weight
Heel touching the wall. Full weight on the foot you are measuring.
Mark the position of your longest toe
Hold a pen vertically (90 degrees to the paper) and mark the tip of your longest toe. For most people, this is the big toe. For some, it is the second toe.
Step off and measure
Use the ruler to measure from the wall edge of the paper to the mark.
Record in mm and inches
Write the number down. Repeat on the other foot — most people have one foot 2 to 5 millimeters larger. Use the bigger number for shoe shopping.
Method 2: Tracing Your Foot (Length and Width Together)
Better than just length because you get width too.
Stand on paper with full weight
Place the paper on a hard floor and stand on it with full body weight on the foot.
Trace the outline
Hold a pen vertical against the side of your foot. Trace the entire outline. Keep the pen perpendicular to the paper at all times — tilting the pen distorts the trace.
Step off the paper
Don't smudge the line.
Measure length
Draw a straight line from the back of the heel outline to the tip of the longest toe outline. Measure that line.
Measure width
Draw a straight line across the widest part of the forefoot. This is usually right where the toes meet the ball of the foot. Measure that line.
Record both numbers. Length plus width equals real shoe size.
Foot Length to Shoe Size: US, UK, EU, JP
| Foot Length | Length (mm) | US Men | US Women | UK | EU | JP (cm) |
|---|---|---|---|---|---|---|
| 9.25" | 235 mm | 6.5 | 8 | 6 | 39 | 23.5 |
| 9.5" | 241 mm | 7 | 8.5 | 6.5 | 40 | 24 |
| 9.625" | 244 mm | 7.5 | 9 | 7 | 40.5 | 24.5 |
| 9.75" | 248 mm | 8 | 9.5 | 7.5 | 41 | 25 |
| 9.9375" | 252 mm | 8.5 | 10 | 8 | 41.5 | 25.5 |
| 10.125" | 257 mm | 9 | 10.5 | 8.5 | 42 | 26 |
| 10.25" | 260 mm | 9.5 | 11 | 9 | 42.5 | 26.5 |
| 10.4375" | 265 mm | 10 | 11.5 | 9.5 | 43 | 27 |
| 10.5625" | 268 mm | 10.5 | 12 | 10 | 43.5 | 27.5 |
| 10.75" | 273 mm | 11 | 12.5 | 10.5 | 44 | 28 |
| 10.9375" | 278 mm | 11.5 | 13 | 11 | 44.5 | 28.5 |
| 11.0625" | 281 mm | 12 | 13.5 | 11.5 | 45 | 29 |
| 11.25" | 286 mm | 12.5 | 14 | 12 | 45.5 | 29.5 |
| 11.4375" | 290 mm | 13 | 14.5 | 12.5 | 46 | 30 |
Japanese sizing is the easiest international system
Foot Width: What the Letters Mean
Width sizing varies between men's and women's shoes.
Men's widths
- B: Narrow
- D: Standard (most US men's shoes default here)
- E: Wide
- EE (or 2E): Wider
- EEE (or 3E): Extra wide
- EEEE (or 4E): Extra extra wide
Women's widths
- AAA: Extra narrow
- AA: Narrow
- B: Standard (most US women's shoes default here)
- D: Wide
- EE (or 2E): Extra wide
Each letter step is roughly 1/4 inch (6 mm) of width difference at the ball of the foot.
How to Figure Out Your Width
Take your forefoot width measurement (from the trace method) and use these charts.
Men's width chart (size 9 reference)
- B: under 3.6" / 91 mm
- D: 3.6 to 3.9" / 91 to 99 mm
- E: 3.9 to 4.1" / 99 to 104 mm
- EE: 4.1 to 4.3" / 104 to 109 mm
- EEE: 4.3"+ / 109+ mm
Women's width chart (size 8 reference)
- AA: under 3.1" / 79 mm
- B: 3.1 to 3.3" / 79 to 84 mm
- D: 3.3 to 3.5" / 84 to 89 mm
- EE: 3.5"+ / 89+ mm
Width changes slightly with foot length. A 4-inch wide foot at size 9 is "wide." The same width at size 12 is "regular." If you are at the extreme of length (very small or very large feet), check the brand's specific width-by-size chart.
When Length and Width Disagree
Common case: your foot length puts you in a size 9. Your forefoot width puts you in a wide. The brand only sells D width.
Two options:
Option 1: Buy the brand in your length, accept the width compromise
Option 2: Size up by half a size to get more width naturally
Best option: buy from brands that offer multiple widths
Five Mistakes That Wreck Your Foot Measurement
Measuring sitting down
Foot length grows half an inch when you stand. Always measure with full weight on the foot.
Tilting the pen during a trace
A pen at an angle creates an inflated outline. Hold it vertical, perpendicular to the paper.
Measuring without socks
If you wear socks with the shoes, measure in socks.
Only measuring one foot
Most people are asymmetric by 2 to 5 mm. Use the larger foot.
Measuring in the morning
Feet are smaller in the morning. Always measure afternoon or evening.
When to Size Up vs. Size Down
Default for most shoes: size up if between sizes.
Exceptions:
- Running shoes: size up half a size from your normal size to allow toe room when running. Toes slide forward on impact.
- Dress shoes and oxfords: match exactly to your length. Leather stretches with wear.
- Boots: match exactly. Boots break in over time.
- Sandals and open-toe shoes: size to your length exactly. Excess length looks sloppy with open toes.
- Heels: size up half a size for narrow toe boxes. Match exactly for round toe.
FAQs
Do I really need to measure both feet?
Yes. Most people have asymmetric feet. The bigger foot is the one your shoes need to fit.
My toe length is bigger than my heel-to-ball length. Why?
You have a long toe profile, which is normal. Always measure to your longest toe, regardless of which one it is.
How do I know if a brand runs small or large?
Check reviews. Look for phrases like "true to size" (TTS), "runs small," or "runs large." Order accordingly. When in doubt, order two sizes and return the wrong one.
Do my feet change size as an adult?
Yes, slowly. Feet flatten and lengthen with age, pregnancy, and weight gain. Re-measure every 2 to 3 years, or after significant life changes.
Should I measure barefoot or in socks?
In the socks you will wear with the shoes. Athletic socks are thicker than dress socks. Match the measurement to the use case.
What does the width letter (D, E, EE) mean?
Each letter represents about 1/4 inch (6 mm) of width difference at the ball of the foot. For men: B is narrow, D is standard, E/EE/EEE are progressively wider. For women: B is standard, D and EE are wide.
Save Your Numbers Once
Foot length and width are stable for years. Measure once. Write it down. Use it for every shoe purchase.
Add to your size note:
- Foot length, left (mm and inches)
- Foot length, right (mm and inches)
- Forefoot width, left (mm and inches)
- Forefoot width, right (mm and inches)
- Width letter (B, D, E, EE, etc.)
Five numbers. Five minutes. Every shoe you buy online from now on lands at your front door fitting like it was made for you. Stores running Tailor Size Guide let shoppers save these numbers and match them to the right length + width before they hit buy.
Selling shoes, sneakers, or footwear on Shopify?
Half the returns in your store are width problems shoppers couldn't see at checkout. Tailor Size Guide adds smart size charts, custom measurement forms, and fit recommendations to your product pages so shoppers stop guessing on length and width and start buying with confidence.