Methodology

What the charts contain

Every chart lists body measurements, not garment measurements: chest, waist, hip, and — where the brand publishes it — shoulder and inseam, in centimetres. The rows are size labels (XS–3XL, or numeric for jeans), and each row is the range of body measurements that the brand maps to that label.

This matters when you compare a chart with a tape measure: if the chart says a men's M is a 97–102 cm chest, that is the chest it expects you to have, not the chest width of the folded shirt.

Where the numbers come from

Charts are compiled from brands' published sizing information and from the regional sizing conventions each brand sells under (US, EU, JP). Where a brand publishes one chart for several markets, the chart is labelled with the market it was built for.

Brands revise their charts, add fits, and change regional labelling. We update a chart when we find a change; we do not claim that every chart is checked against the brand's current guide on the day you read it.

What we do not do

• We do not measure garments. Nothing here tells you the chest width of a specific item.
• We do not infer a brand's “fit” from its charts. Cut is a separate thing from size.
• We do not publish a number we cannot attribute to a published sizing structure.

Known limits

• Ranges drift. Vanity sizing has moved labels over the decades, and a chart from five years ago can be a size off.
• Regional variants. A Japanese chart and a US chart for the same brand are not the same table.
• Between sizes is normal. Most people land in two rows; the chart narrows the choice but does not make it for you.

How estimates are produced

The measurement tool estimates chest, waist and hips from a photo using pose detection that runs in your browser. Estimates carry roughly ±3–5 cm of error from a single photo, which is why the calculator asks you to calibrate against one measurement you already know — that step brings it to about ±1–2 cm. No photo is uploaded for the free scan; the optional AI Enhanced upgrade is disclosed in the privacy policy.

Independence and money

Brands do not pay to be listed and cannot change a chart. Chart pages contain Amazon affiliate links, and we earn a commission on qualifying purchases at no cost to you. The affiliate relationship has no effect on which size a chart recommends.

Reporting an error

If a row does not match the brand's own guide, send the page URL, the row, and a link to the brand's source to hello@photofit.dev. Corrections are published on the chart page with a new review date.