Why should we measure our feet before buying sneakers online?

We recommend measuring because foot length can change with activity and one foot is often longer, so measuring helps match your actual size to the brand chart and reduce returns.

How do we measure our feet correctly at home?

Stand with your heel against a wall at the end of the day, trace or mark the longest toe while wearing the socks you’ll use with the sneakers, then measure heel-to-longest-toe in millimetres or centimetres and record the larger foot.

How do we convert our measurement to the right size on a product page?

Match your longest-foot measurement to the brand’s size chart or internal length listed on the product page, and when unsure choose a size that leaves about 5-10 mm of extra room in the toe box for everyday sneakers.

What should we check when switching sneaker categories or brands?

We advise checking brand and category fit notes-running, trail and casual styles can fit differently-read the product notes and the first few customer reviews for comments about running small, large or wide before choosing.

How do we account for wide feet, orthotics or children’s growing feet?

For wide feet, look for ‘wide’ options or stretchable uppers; if using orthotics measure with the insole in place or size up for toe clearance; for children measure frequently (monthly for toddlers, every 2-3 months for older kids) and allow around 10 mm extra for faster growth.

How to find the right sneaker size online

Learn a simple, repeatable method to measure your feet, read brand charts and pick the right sneaker size for men, women and kids when shopping on Bash.

Published:July 11, 2026

Updated:August 27, 2026

5 min read

Photo by Ron Lach on Pexels

Measure both feet

Trace and measure the longest foot at the end of the day for accurate length.

Why sizing online needs a simple system

Buying sneakers online should save time - not create returns. We’ve seen common problems: people assume their usual number is one-size-fits-all, or they don’t measure their feet after a season of walking. Here we give a clear, repeatable process so you can choose a size with confidence. Use this as a checklist before you tap Checkout.

What you’ll need

Blank sheet of paper, a pen and a ruler or tape measure.
A pair of socks you’ll wear with the sneakers (thin or thick depending on your usual use).
The product page open so you can compare your measurements with the brand’s size chart.

Quick measurements to do at home

Measure both feet - one foot is often slightly longer. Do this at the end of the day when feet are a little larger from movement. Stand with your heel against a wall and trace the outline or mark the longest toe. Measure heel-to-longest-toe in millimetres or centimetres and note the larger foot.

How to convert a measurement to a size

Brands publish their own size charts. We recommend you match your longest-foot measurement to the brand chart on the product page rather than guessing from a familiar size. If the product page lists internal length (in mm/cm), use that number; otherwise map your measurement to the brand’s stated size. When in doubt, choose the size that gives ~5-10 mm (half to full thumb width) of extra room in the toe box for everyday sneakers.

Use brand and category clues

Different sneaker styles fit differently. Running shoes often use snug heels and roomy forefeet; casual sneakers can run wider. If you’re switching brands - say from a lifestyle brand to a performance running brand - check the brand page for notes on fit. Explore the Nike brand page if the product is Nike to check specific sizing notes and sub-brand guidance. Nike

Look for helpful details on the product page

Good product pages tell you whether a sneaker runs narrow, true to size or wide; list internal length; and show customer Q&A or reviews that mention fit. We recommend making a quick habit: check the size chart, then read the first 3-5 reviews for fit comments before choosing.

A simple decision flow before you buy

Measure both feet and record the longest length.
Open the product size chart and find the matching length or size.
If you lie between two sizes, pick the larger for heavier socks or wide feet; pick the smaller for a snug athletic fit.
Check the product notes and customer reviews for “runs small/large/wide”.
If the brand offers half sizes, prefer those over insole changes - they preserve the intended fit.

Try a style fit reference

When you can, compare the new listing to a sneaker you already own. Many of our customers find it helpful to use a familiar pair (same brand or similar silhouette) as a reference point when reading length or width notes on the product page. If you’re considering a green-colourway or a limited release, the editorial piece on green styles can highlight specific models that tend to fit differently. Green Nike sneakers: style, fit and where to shop

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Special cases and small adjustments

If you have wide feet or orthotics

Look for sneakers labelled ‘wide’ or check product specs for upper material - leather stretches less than knit. If you use orthotics, measure with the insole in place and compare the insole length on the product page, or plan to size up enough to keep toe clearance while accommodating the insert.

Kids and growing feet

Children’s feet grow quickly; measure monthly for toddlers and every 2-3 months for older kids. Many families leave ~10 mm of extra room for faster-growing feet. If you’re shopping for kids, browse the Kids Sneakers category for size-filtered options and read product notes for age guidance. Sneakers

If the style is new to you or a different category

Trail sneakers, skate-style shoes, and performance trainers each use different lasts. Treat a different category as a separate decision: measure, check the chart, and expect small fit differences. When you want a quick visual cue, photos that show the shoe on a model and customer images are especially helpful.

Our practical rule: measure, consult the brand chart, then check the two most recent reviews for fit comments. That three-step habit reduces returns and saves time.

When to size up or down - practical examples

Example 1: You measure 260 mm and the brand’s size chart maps 260 mm to size 8. Choose size 8 and expect about 5-10 mm toe room. Example 2: You measure 267 mm and the chart places 267 between sizes 8 and 8.5 - choose 8.5 if you wear thicker socks or orthotics. Example 3: You usually wear size 9 in a lifestyle sneaker but are buying a performance running model with notes ‘runs small’ - size up a half-size.

Using Bash tools to make it easier

We keep size charts and customer reviews on each listing so you can compare quickly. If you want curated options in one place, search the Sneakers category for filtered fits and sizes. Sneakers is a good starting point for men’s silhouettes; switch to the equivalent Women or Kids category as needed.

Final checklist before you order

Measured longest foot at the end of the day.
Compared measurement to the product/brand size chart.
Checked customer reviews and the product’s fit notes.
Planned for socks or orthotics by sizing up when necessary.

We aim to make buying sneakers online feel less like guessing and more like a small, reliable routine. If you’re exploring specific models or colourways, our brand pages and category lists help you compare sizes and options.

Sources

NHS - Measure your foot size
Shoe size - Wikipedia
Consumer Reports - Guide to buying running shoes

Last updated: August 27, 2026

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How to find the right sneaker size online

Measure both feet

Why Choose Bash?

Free Delivery

30-Day Returns

Nationwide Support

Why Choose Bash?

Free Delivery

30-Day Returns

Nationwide Support

Match brand charts

Plan for socks/orthotics

Why sizing online needs a simple system

What you’ll need

Quick measurements to do at home

How to convert a measurement to a size

Use brand and category clues

Look for helpful details on the product page

A simple decision flow before you buy

Try a style fit reference

Special cases and small adjustments

If you have wide feet or orthotics

Kids and growing feet

If the style is new to you or a different category

When to size up or down - practical examples

Using Bash tools to make it easier

Final checklist before you order

Sources

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