Asta Warm Lined Boot Leather - Tobacco

Shoe size – the complete Nature Footwear size guide

We care about your feet, which is why we’ve put together this shoe size guide so you can find the perfect fit every time you order a pair of Nature shoes. Based on our official sizing charts, the guide gives you easy-to-understand advice on measuring both length and width, so your new shoes feel as natural as walking barefoot.

Women - size conversion & measurements:

Men's size conversion & measurements:

Children - size conversion & measurements:

How to find your shoe size – step by step

Stand on a flat surface with your heel against a wall or other vertical surface.

Measure the length of your foot by placing a ruler on the floor along the inside of your foot. Take the measurement (mm) from the wall/surface to your longest toe. That's the length!

Remember to measure both of your feet! Not all feet are the same length – and if that is the case with your feet, choose the size that fits the largest foot.

Take good care of your feet! After all, they will carry you throughout your life.

Why is the correct shoe size important?

A shoe in the right size relieves pressure points, gives your toes freedom and extends the life of both shoes and feet. If you choose shoes that are too small, your toes will be squeezed; if you choose shoes that are too big, you will lose support. Therefore, use our shoe size guide as a fixed reference, and always measure both feet – the larger one sets the standard. In addition, it is always important to take into account whether you are purchasing ballerinas , boots, sandals or the like, as this can affect the comfort of the size.

Shoe size guide for women and men

In the tables on the page you will find precise measurements for length and width (mm) as well as conversions between EU, UK and US sizes. For example, EU 42 men's corresponds to approximately 274 mm in foot length, while EU 41 women's corresponds to approximately 267 mm. With these numbers you can easily translate your usual shoe size across brands and countries.

Are you ready to shop? Jump straight to the categories for women's and men's shoes and use the filter to choose your size. If you are still in doubt, our customer service is ready in chat and on the phone.

FAQ – frequently asked questions about shoe size

How do I measure my feet?

For the most accurate measurement, we recommend using a stiff tape measure or ruler and measuring in millimeters. Stand barefoot with your heel lightly pressed against a wall on a hard, flat surface. Place a piece of paper or tape measure perpendicular to the wall and mark where the longest toe ends. Repeat the process for the other foot – it is normal for there to be a 2–3 mm difference. Use the largest measurement and add 5–8 mm for room to move when looking up our size chart. Take the measurement at the end of the day, when your feet are often the most swollen, to ensure that your shoes don’t end up pinching.

What does size 8 correspond to?

Size 8 in the UK system converts differently depending on gender. For men, UK 8 corresponds to EU 42, while for women it corresponds to EU 41. Both sizes cover a foot length of approximately 27.4 centimeters. If you are unsure whether you need a half size up or down, you can compare the exact millimeter value from your measurement with the length column in our chart to find the most accurate fit. Remember that different brands can vary slightly, so always use the Nature chart as your primary reference when purchasing our shoes.

How do you measure the width of a foot?

The best way to measure width is to stand flat on the floor, preferably with a slight weight distribution on the foot you are measuring. Place the measuring tape across the forefoot at its widest point – typically from the base of the little toe to the base of the big toe (ball of the foot). Pull the measuring tape around, without tightening it too much, but not so loose that it slips down. Record the measurement in millimeters, and repeat on the other foot. Compare the result with the “Width (mm)” column in our size guide; if you find yourself between two width categories, we usually recommend the larger width for the best comfort, especially if you tend to have swollen feet at the end of the day.

How much space should there be in shoes?

The general rule of thumb is to allow 5–8 millimeters of extra length in front of your longest toe when standing upright. This extra space allows your foot to expand naturally throughout the day and during activity where the toes push slightly forward. It also prevents unnecessary friction and blue nails that can occur if the shoes are too small. If you plan to wear extra thick socks or insoles, you should consider going up half a size so that you still maintain the recommended distance. The preferred space may also differ depending on the type of shoe, e.g. boots .

Length overview – how long is a foot in the most popular sizes?

How long is a size 43 foot?

An average foot that fits EU size 43 typically measures approximately 28.1 centimeters from heel to tip of longest toe.

How many cm is size 42?

When choosing shoes in EU size 42, you should expect your foot length to be around 27.5 centimeters, which allows for the recommended 5–8 millimeters in the shoe.

How long is a size 40 foot?

For EU size 40, the expected foot length is approximately 26.0 centimeters, measured from the back edge of the heel to the outermost point of the big toe.

How long is the foot in size 37?

A foot that fits EU size 37 has, as a rule of thumb, a length close to 24.0 centimeters, which is a good starting point when you compare with our size chart.