La Sportiva Size Chart

La Sportiva's official chart lists sizes only, with no length in centimetres or millimetres, so it cannot be compared with other brands by length.

Only in part. The chart gives the length each size is meant for; how a particular model fits also depends on its last, width and materials, which the chart does not show. La Sportiva itself advises: For mountain boots, find your US size on the chart, go across to the European size, then add one half size. Try boots on with the socks and any orthotics you will use, later in the day; with the boot unlaced and toes at the front you should fit one finger behind your heel. Rock shoes: soft shoes are usually fitted two to three sizes under street size and trad shoes one to two sizes under; unlined shoes stretch about a full size, lined ones about a half size. Wide sizes are offered only in select hiking and running models. Shoes are handmade, so sizing can vary slightly from pair to pair in the same size.

When the two charts list different lengths. A measured foot length and a size in cm are about 8 mm apart, and the length of a foot is not the inside length of a shoe, so such a match can be half a size or more off. The converter matches only lengths on the same scale and lists the other brands separately. La Sportiva's chart has no length on a clear scale, so it is not matched with other brands at all; use its own chart and advice.

On 2026-10-24, against La Sportiva's official size guide linked under each chart. The date changes only when the chart is checked again against the official page or its numbers change, not when this page's layout or wording changes.