Work Boot Sizing Guide: How to Measure and What a Correct Fit Feels Like

Most work boot returns are sizing returns, and most sizing returns come from measuring the wrong way rather than picking the wrong number. Feet change size through the day. Work socks are thicker than the socks you measured in. And a safety boot with a rigid toe cap fits differently than a running shoe with the same number on the box. This guide walks through how to measure properly and what a correctly fitted work boot should actually feel like.

Measure at the End of the Day

Your feet are measurably larger at the end of a working day than at the start. Gravity, activity, and heat all cause swelling, and the difference can be close to half a size. A boot fitted first thing in the morning will feel tight by mid-afternoon, which is exactly when you least want it to.

Measure after you have been on your feet for several hours. That is the size your boots need to fit.

Measure in Your Work Socks

Heavy work socks are substantially thicker than everyday socks, and in winter that gap widens further. If you measure in thin socks and then wear thick ones on site, you have effectively made your boots a partial size smaller without meaning to.

Use the socks you actually wear on the job. If you wear different weights summer and winter, measure in the heavier ones.

How to Take the Measurement

1. Put on your work socks and stand on a piece of paper against a wall, heel touching the wall.
2. Stand up straight with your weight distributed normally across both feet. Do not sit down for this, and do not stand on your toes or rock back on your heels. Weight-bearing changes foot length.
3. Mark the paper at the tip of your longest toe. That is not always the big toe.
4. Measure from the wall to the mark.
5. Repeat for the other foot.

Most people have one foot slightly larger than the other. Always buy for the larger one. The smaller foot can be managed with sock thickness or an insole. A foot that is too big for the boot cannot be managed at all.

Measure Width Too

Length gets all the attention and width causes most of the discomfort. Measure across the widest part of your foot, which is usually the ball, while standing with your weight on it.

Here is the thing worth knowing: if you have spent years in boots that squeeze, you may not have an accurate sense of your own width. People adapt to a bad fit and stop noticing it. If you have ever taken your boots off at the end of a shift and felt relief rather than just tiredness, width is probably the reason.

What a Correct Fit Feels Like

Once the boots are on, laced, and you have walked in them for a few minutes:

• Heel. Firmly seated in the heel cup. A small amount of lift when you walk is normal in a new boot and settles as the sole flexes. Sliding is not.
• Toes. Roughly a thumb's width between your longest toe and the end. You should be able to move your toes. They should not touch the toe cap when you walk downhill or stop suddenly.
• Midfoot. Snug and supported through the arch and instep, held by the lacing rather than by the boot squeezing you.
• Ball of the foot. Sitting at the widest part of the boot, where it naturally flexes. If your foot flexes in a different place than the boot does, the size is wrong.
• Width. No pressure on the sides of the forefoot. None. Leather gives a little over time, but a composite toe cap gives nothing at all.

Sizing Tiger King Boots

Tiger King boots are built on a roomier last than most safety footwear. That is deliberate, and it means the fit runs different from brands that build narrow and offer wide as an add-on. Here is how to convert your measurement into an order:

• Standard width feet: size down half a size. If you measure a 10, order a 9.5. The extra volume in our last means a half size down will feel snug and responsive rather than tight.
• Wide feet: order your measured size. The room our last gives you is exactly what has been missing from every other boot you have tried.
• Very wide feet: your measured size, and contact us before ordering so we can point you at the styles with the most volume.

This is real guidance, not a sales line. Sizing down half a size is the single most common thing that turns a Tiger King boot from good to right.

If you are between sizes, ordering for someone else, or outfitting a crew, contact us before you order. We would rather spend five minutes on the phone than have you go through an exchange.

Tiger King Size Chart

These are the sizes we currently make in each style. Remember the half-size-down rule before you read across: if you measure a 10 and have standard-width feet, the size you want from this chart is 9.5.

Men's styles

Women's styles

Two gaps worth knowing about: Hudson men's does not currently run in 10.5, and Niagara women's does not currently run in 6.5. If you land on one of those, contact us and we will point you at the closest fit in another style.

What Break-In Should and Should Not Involve

A new safety boot needs a short break-in while the sole flexes and the upper softens. Expect some stiffness for the first week or two of regular wear.

Break-in does not fix a sizing problem. If a boot is too short, too narrow, or presses on your toes on day one, it will still do that in a month, and you will have worn it past the point of returning it. Pain is not break-in. Stiffness is.

Wear new boots for a few hours at a time before committing to a full shift, and keep the old pair until you are confident.

When to Replace

Fit changes as boots age. Cushioning compresses, the footbed packs down, and the upper stretches unevenly. A boot that fit well eighteen months ago may not now.

Replace when the tread is worn smooth, when the midsole no longer rebounds, when the flex crease across the forefoot is cracked, or when your feet ache at the end of a shift the way they did not a year ago. In heavy industrial use, that is usually somewhere between nine and eighteen months.

Browse men's styles or browse women's styles.

Shop Tiger King

Every Tiger King style is CSA Grade 1 certified, composite toe, puncture resistant, metal free, and ESR rated, built on a roomier last for Canadian work conditions.

• Jasper Men's and Jasper Women's: Chelsea-style pull-on boot
• Hudson Men's and Hudson Women's: mid-cut boot with ankle support
• Niagara Men's and Niagara Women's: waterproof boot
• Superior Men's: waterproof 8 inch boot
• Michigan Men's and Michigan Women's: lightweight safety shoe
• Tofino Men's and Tofino Women's: lightweight safety shoe

Men's CSA safety boots and shoes

Women's CSA safety boots and shoes

Waterproof CSA safety boots

Browse all Tiger King safety footwear