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Calculate your perfect shoe size instantly with accurate measurements and international size conversions. Get sizing for men, women, and kids with width options.
Enter your foot length and width for accurate sizing
Measure from the longest toe to the heel
Measure at the widest part of your foot
Step-by-step guide for accurate measurements
Understanding different regional sizing systems
Most common sizing system, uses whole and half sizes
Approximately 0.5-2 sizes smaller than US sizing
Larger numbers (35-48), uses Paris Point system
Based on centimeters, most accurate measurement
Uses millimeters, Mondopoint system
Similar to UK sizing system
Based on millimeters, similar to Japanese system
Similar to US but slightly different conversion
Accurate foot measurements are essential for finding the perfect shoe fit. Follow these steps carefully for the best results.
Get a piece of paper, pencil, ruler or measuring tape, and a hard flat surface against a wall.
Place paper on floor against wall. Wear the socks you'll typically wear with shoes.
Stand with heel against wall, weight evenly distributed. Mark the longest toe on paper.
Measure from wall to mark in inches or centimeters. Repeat for both feet and use larger measurement.
Wrap measuring tape around the widest part of your foot (ball area) while standing.
Feet swell throughout the day. Evening measurements ensure comfortable all-day fit.
Always measure while standing with weight distributed evenly on both feet.
Most people have slightly different sized feet. Always fit to the larger foot.
Wear the type of socks you'll use with the shoes when measuring.
Based on barleycorn units (1/3 inch). Men's and women's scales differ by 1.5 sizes. Example: US Men's 9 = US Women's 10.5
Similar to US but starts at different point. Generally 0.5-1 size smaller than US. Example: US 9 = UK 8.5
Uses Paris Points (2/3 cm). Unisex system. Example: US Men's 9 = EU 42.5, US Women's 9 = EU 40
Size up 0.5-1 size for toe room. Feet swell during exercise. Need thumb's width space at toe.
Should fit snugly. Leather stretches over time. Minimal toe room compared to athletic shoes.
Consider thick sock space. Should be snug but not tight. Allow room for foot expansion.
Foot shouldn't hang over edges. Straps should be adjustable. Consider swelling in heat.
Snug fit for court control. High ankle support. Less toe room than running shoes.
Very snug fit for ball control. Minimal toe room. Should feel like second skin.
Similar to running shoes but more secure. Need room for downhill toe movement.
Snug fit essential to prevent sliding. Consider heel height impact on fit.
Allow 1/2-3/4 inch growth room. Check fit every 2-3 months. Flexible sole important.
About 1/2 inch (thumb width) between longest toe and shoe end when standing.
Heel stays in place when walking. No slipping or rubbing at back of shoe.
Ball of foot fits comfortably in widest part. No pinching or pressure on sides.
No rubbing, pinching, or discomfort anywhere on foot after walking around.
Arch of shoe aligns with arch of foot. Provides comfortable support.
Shoes feel comfortable right away. Don't need extensive "breaking in" period.
Toes cramped or touching shoe end. Can cause blisters, black toenails, discomfort.
Heel slides up and down when walking. Indicates shoe is too large or wrong shape.
Pinching or bulging at sides. Shoe is too narrow. Try wider width or different style.
Foot extends beyond shoe edges (especially sandals). Need larger size.
Indicates shoe is too tight. Can cause nerve compression and circulation issues.
Foot slides around inside shoe. Too large or wrong shape for your foot.
To measure your shoe size at home: 1) Place a piece of paper on a hard floor against a wall, 2) Stand on the paper with your heel against the wall, 3) Mark the longest toe on the paper, 4) Measure from the wall to the mark in inches or centimeters, 5) Use our calculator to convert the measurement to your shoe size. Measure both feet and use the larger measurement.
US, UK, and EU shoe sizes use different measurement systems. US sizes are based on the last (foot mold) length in barleycorns (1/3 inch). UK sizes are similar but start at a different point. EU sizes use the Paris Point system (2/3 cm increments). For example, US Men's 9 = UK 8.5 = EU 42.5.
If you're between sizes, generally size up for comfort, especially for athletic shoes and boots. However, for dress shoes or if you have narrow feet, you might prefer the smaller size. Consider the shoe type: running shoes need more room (half size up), while dress shoes should fit snugly.
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Our shoe size calculations are based on internationally recognized sizing standards including the Brannock Device measurement system (US standard since 1927), ISO 9407:2019 footwear sizing standards, and Mondopoint system used globally. All conversion formulas have been verified against official sizing charts from major footwear manufacturers.
This calculator provides general sizing guidance based on standard measurements. Individual fit may vary by brand, shoe style, and personal preference. For medical foot conditions or persistent fitting issues, consult a podiatrist or certified pedorthist. Always try shoes on when possible and check brand-specific sizing charts.
Unlike basic calculators, we provide width measurements and fitting guides for narrow, medium, wide, and extra-wide feet.
Separate calculators and growth guides for infants, toddlers, kids, and adults - not just generic conversions.
Specific fitting advice for athletic, dress, boots, sandals - information competitors don't provide.
Accurate conversions between US, UK, EU, AU, and Asian sizing systems with brand variations.
Step-by-step visual instructions with printable foot measurement template for accuracy.
Guidance on foot shape types (Egyptian, Greek, Roman) and best shoe styles for each.