Loafers Size Calculator

How to calculate loafers size

Loafers sizing starts with foot length, not with the size you wore last time. Measure both feet in the evening, in the socks you will wear, and use the longer foot. Trace each foot on paper, measure from the back of the heel to the tip of the longest toe, and measure across the ball for width and the top of the foot for instep. The calculator compares that length with broad general ranges and returns the US women's size whose range contains it.

Instep, width, style and socks then shape the final choice, because a foot that is wide or has a high instep can feel tight in the size its length points to. The calculator asks for all four so its guidance changes with your answers.

Do not choose loafers size from foot length alone

Foot length alone misses the parts of a loafer that fail first. Width decides whether the ball of the foot feels pinched, instep height decides whether the vamp digs in or gapes open, and style decides how high the vamp sits. If your instep points to a lower vamp than your length suggests, try a different style before you change size.

Socks matter just as much. A regular sock adds bulk that a bare foot does not, which makes a close vamp feel tighter. The calculator uses socks for that guidance, and it compares your instep with the style you chose.

General loafers size chart

The chart below gives broad general women's loafers sizes from US 5 to US 12, with foot length in inches and UK and EU equivalents. Treat these as starting ranges, not as brand sizes. Always check the brand chart for the loafers you are buying, because brands grade differently.

If your foot length falls below US 5 or above US 12, the chart cannot give you a precise starting size. In that case, use the nearest end of the chart as a rough guide and rely on the brand chart and the stated insole length instead.

How instep changes the choice

A foot with a high instep rises steeply from the toes to the ankle, so it pushes up against the vamp and can make a loafer feel short even when the length is right. A low instep runs almost flat, so the vamp sits high above the foot and the heel can slip. A medium instep sits between the two and fits most styles without trouble.

A high instep suits a penny loafer with a lower, more open vamp, while a low instep suits a closer fitting vamp like a bit loafer. The calculator asks for instep height so its style guidance changes with your answer, and the loafers instep fit guide explains how to check your instep and match it to a style.

How width changes the choice

A foot under the average width is narrow, a foot near the average is regular, and a foot over the average is wide, as a rough guide. A narrow foot suits a narrow width or a no-show sock with a heel grip, a wide foot needs a wide width version before you size up, and a regular foot should fit a standard width. When the width is wrong, the ball feels pinched or the heel slips, even when the length is right.

Width and instep work together in a loafer, so check both before you exchange. The loafers width fit guide explains how to tell a width problem from a length problem.

How loafer style changes the fit

Loafer style changes the vamp height, and the vamp height changes the fit. A penny loafer has a low, open vamp that suits a higher instep, a tassel loafer has a fuller vamp that suits a wider foot, a bit loafer has a tighter vamp with a metal bar that suits a lower instep, and a plain loafer sits between them and suits most foot shapes. At the same size, a bit loafer will feel tighter than a penny loafer.

Choose the style for your foot shape as well as the occasion. The loafers styles guide compares all four styles for fit as well as looks, so read it before you choose between two styles in the same size.

How socks change the fit

Socks change the fit of a loafer more than they change a laced shoe, because there is no lace to take up the extra bulk. A regular sock adds a little length and width, a no-show sock adds almost nothing, and a bare foot gives the smallest fit of all. A pair that fits with no-show socks can feel tight with regular socks, so decide the socks plan before you order, not after the box arrives.

Measure in the socks you plan to wear, and keep the same plan when you try the pair on and when you wear it out. The loafers socks or no socks guide works through the choice in detail, and the how socks affect shoe fit guide explains the effect across shoe styles.

Signs loafers are too small

• The toes curl, overlap or press hard against the front of the shoe.
• The vamp digs into the instep and leaves a red mark across the top of the foot.
• The ball of the foot feels pinched at the sides or burns after a short walk.
• The heel cup rubs raw and threatens a blister within the first hour.

Signs loafers are too large

• The heel lifts clear of the shoe with each step.
• The vamp gapes open at the sides and you can see a gap between the shoe and your foot.
• The foot slides forward and the toes jam into the front.
• The shoe flops as you walk and you have to curl your toes to keep it on.

How to choose loafers size online

Shopping online removes the fitting room, so measurements matter even more. Take fresh foot length, width and instep measurements, use the calculator for a starting size, then open the brand chart and compare your numbers with the full row for that brand, not just the size letter. If the brand also lists insole length, compare that too, especially if you are choosing a bit loafer or a pointed toe.

Read the style, the vamp height and the material on the product page as well as the chart. A brand that describes a style as a tight bit loafer has already built a close vamp into its sizes. The how to choose loafers size online guide works through the full online checklist.

Common loafers sizing mistakes

• Choosing by your usual size letter without checking the brand chart.
• Measuring in the morning and then wearing the loafers all evening.
• Using foot length alone and ignoring width, instep, style and socks.
• Sizing up to fix a tight vamp, which adds length at the heel too.
• Measuring barefoot and then wearing regular socks with the loafers.