A useful women’s sandal size guide starts with measured foot length and the chart on the exact product—not with a universal conversion table. Numeric sizes and US labels are reference points. Toe shape, straps and the way the sandal holds the foot can still change fit even when the length measurement looks right.
Measure both feet and use the larger foot as your starting reference
Measure on a flat surface using the method provided by the seller when one is available. Compare the larger foot with the exact product chart. Foot length gives you the core length reference; it does not by itself confirm width, toe room or strap pressure.
If the sandal has several straps, length and strap fit should be judged separately. A longer size is not a guaranteed fix for a strap that crosses the wrong part of the foot.
Read the chart horizontally: label, US reference, then foot length
A current listing might show a numeric size alongside a US label and a foot-length measurement. Treat the foot-length value as product-specific evidence. A familiar size label is useful context, but it should not override a different measurement shown on the live listing.
Two current Sarah Express examples show why you should reopen the chart
The Hollow Out Mesh Platform Sandals currently list sizes 35–42, from 8.8 inches at size 35 (US4) through 10.2 inches at size 42 (US10.5), and the listing says true to size.
The Open-Toe Wedge Sandals currently extend one step farther to size 43 (US11), with a listed foot length of 10.4 inches. Both examples use familiar conversion labels, but the available range is different. That is exactly why a saved screenshot or a chart from another sandal should not replace the live listing.
If your foot falls between rows, use the product’s own fit guidance
Do not automatically size up or down from a generic internet rule. Check whether the listing gives a fit note, whether the sandal has adjustable straps, and how much toe and heel space the shape requires. If the seller provides explicit between-size guidance, prioritize that instruction.
For the broader measuring process, see the published Complete Shoe Size & Fit Guide.
Three common online sizing mistakes
- Copying a chart across products: measurements belong to the exact listing unless stated otherwise.
- Using “true to size” instead of measuring: the fit note helps, but it is not a substitute for your foot length.
- Treating length as total fit: straps, forefoot width and toe shape can create fit problems even when length is correct.
Broad shopping belongs to the Sandals & Slides collection; this guide is for interpreting the measurements once you have a specific sandal in mind.
Women’s Sandal Sizing FAQ
Should I use a universal sandal conversion chart?
Use it only as background guidance. The exact product’s live measurement chart should take priority.
Does “true to size” mean I can skip measuring?
No. Measuring gives you a stronger online-shopping reference, especially when toe shape or straps are involved.
What if my two feet measure differently?
Use the larger foot as the starting reference, then evaluate the exact sandal’s adjustability and fit guidance.