Nike Shoe Size Guide

Complete sizing charts and fit guide for all Nike shoes including Air Force 1, Jordan, Dunk, and running shoes

Nike Sizing Overview: Does Nike Run Small or Large?

Nike is one of the world's most popular athletic footwear brands, but their sizing can be inconsistent across different shoe models. Understanding Nike's sizing tendencies will help you find the perfect fit without the hassle of returns.

General Rule: Nike athletic shoes typically run 0.25 to 0.5 sizes smaller than standard US sizing, and they tend to run narrow. This means if you normally wear a size 10 in other brands, you might need a 10.5 in Nike shoes. However, this varies significantly by model and shoe type.

Nike Sizing by Shoe Type

Running Shoes (Pegasus, React, Vaporfly): Nike running shoes generally run true to size to slightly small. The Pegasus line tends to fit true to size, while the React and Vaporfly models run slightly narrow. If you have wider feet, consider going up 0.5 sizes or looking for Nike's wide width options.

Basketball Shoes (Air Jordan, LeBron, KD): Basketball shoes from Nike typically run small and narrow. The Air Jordan 1 is notorious for running narrow, and many wearers recommend going up 0.5 sizes. LeBron and KD signature shoes also tend to run slightly small, especially in the toe box.

Lifestyle/Casual (Air Force 1, Dunk, Air Max): These popular lifestyle shoes have varying fits. Air Force 1s generally run large and wide, so many people actually size down 0.5. Nike Dunks fit true to size for most people. Air Max models vary by version but generally fit true to size.

Training Shoes (Metcon, Free): Nike training shoes like the Metcon series fit true to size and offer a snug, stable fit perfect for lifting. The Nike Free line runs slightly small and narrow.

Nike Men's Size Chart

Nike Women's Size Chart

How to Find Your Perfect Nike Fit

Measure Your Feet

The most accurate way to determine your Nike size is to measure your feet. Stand on a piece of paper, trace your foot, and measure from heel to longest toe in centimeters. Compare this measurement to the Nike size charts above.

Consider Your Foot Width

Nike shoes typically run narrow, especially in athletic models. If you have wide feet (D width for women, 2E for men), you should:

• Size up 0.5 to create more width space
• Look for Nike models available in wide widths
• Try models known for wider fits like Air Monarch or certain Air Max styles
• Avoid very narrow models like racing flats or basketball shoes

Check Model-Specific Reviews

Nike's fit varies dramatically between models. Before buying, read reviews specifically mentioning fit. Look for comments about "runs small," "runs large," "narrow toe box," or "true to size" for that specific model.

Popular Nike Models and Their Fit

Air Force 1

The iconic Air Force 1 generally runs large and wide. Most people size down 0.5 from their true size. The toe box is roomy, and the shoe has a wider platform. If you have narrow feet, definitely size down. For wide feet, Air Force 1s fit true to size.

Air Jordan 1

Air Jordan 1s run true to size in length but narrow in width. If you have wider feet or prefer a roomier fit, go up 0.5 sizes. The leather upper stretches slightly with wear, but the toe box remains relatively narrow.

Nike Dunk

Nike Dunks fit true to size for most people. The fit is similar to Air Jordan 1s but slightly more forgiving in width. Most wearers stick with their regular Nike size for Dunks.

Nike Pegasus (Running)

The Pegasus running shoe line fits true to size with a medium width. These are among Nike's most consistent fits. If you're between sizes, go up for more toe room during runs.

Nike React (Infinity, Vaporfly)

React-based shoes run slightly small and narrow. Size up 0.5 if you have wider feet or prefer a roomier running shoe. The Flyknit upper provides some stretch but limited width accommodation.

Nike Kids Shoe Sizing

Nike kids shoes follow the same general principles as adult shoes – they tend to run slightly small and narrow. For growing children, it's especially important to leave room for growth. Measure your child's feet every 2-3 months and ensure there's about 0.5 inches (1.27 cm) of space between their longest toe and the shoe's end.

Nike youth sizes (3.5Y-7Y) run on the same scale as adult sizes. A 7Y is equivalent to a women's 8.5 or men's 7. This makes transitioning from kids to adult sizes straightforward.

Nike Width Options

While most Nike shoes come in standard medium width only, Nike does offer select models in wide widths. Look for:

• Women: D width (wide) in select running shoes
• Men: 2E (wide) and 4E (extra-wide) in select models
• Air Monarch (available in 4E widths)
• Certain walking and training shoes in wide options

Common Nike Sizing Questions

Should I size up or down in Nike?

For most Nike athletic and basketball shoes, size up 0.5 from your normal size. For Air Force 1s and some casual styles, size down 0.5. Always check model-specific reviews before purchasing.

Are Nike and Adidas sizes the same?

No, Nike generally runs smaller than Adidas. If you wear a size 10 in Adidas, you'll likely need a 10.5 in Nike athletic shoes. Adidas tends to run large and wide, while Nike runs small and narrow.

How do I know if my Nike shoes are too small?

Signs your Nike shoes are too small include: toes touching the front, pressure on sides of feet, numbness during wear, toenail discoloration, or blisters. You should have about a thumb's width of space at the toe.

Do Nike shoes stretch?

Nike shoes with leather uppers (like Air Force 1 or Air Jordan 1) will stretch slightly with wear, especially in width. However, shoes with synthetic materials or Flyknit won't stretch significantly. Don't buy shoes that are too tight hoping they'll stretch.