How do I convert On shoe size to TOMS?

Match by foot length in centimeters on each brand’s chart. Example: On US 10 ≈ TOMS US 9.0 (about 27.0 cm). Model fit can still differ — check model guides.

Is a On US 10 the same as a TOMS US 10?

Not always. Labels can map to slightly different foot lengths. Use the cm column, then adjust for the specific model’s fit.

On to TOMS size conversion

Match sizes by foot length (cm), then check model fit — US labels alone can mislead across brands.

Chart match · verify brand charts

Check current prices · Cloudmonster Check current prices · Alpargata

(paid link)

Your On size (US)

Full converter (model + shoes you own) · Reverse: TOMS → On

On → TOMS chart

Static conversion table (crawlable). Interactive tool above uses the same cm matching.

On US	cm	TOMS US	TOMS EU
6.0	23.4	6.0	38.0
6.5	23.9	6.0	38.0
7.0	24.4	6.5	38.5
7.5	24.9	7.0	39.0
8.0	25.3	7.5	40.0
8.5	25.8	8.0	40.5
9.0	26.1	8.0	40.5
9.5	26.6	8.5	41.0
10.0	27.0	9.0	42.0
10.5	27.4	9.5	42.5
11.0	27.8	10.0	43.0
11.5	28.3	10.5	43.5
12.0	28.7	10.5	43.5
13.0	29.6	11.5	44.5

Model fit matters

Even when charts match, lasts differ. Check these guides:

On: Cloudmonster · Cloud 5 · Cloudsurfer

TOMS: Alpargata

Check prices: On TOMS (paid link)

FAQ

How do I convert On shoe size to TOMS?: Match by foot length in centimeters on each brand’s chart. Example: On US 10 ≈ TOMS US 9.0 (about 27.0 cm). Then adjust for the specific model’s fit (runs big/small/narrow).
Is a On US 10 the same as a TOMS US 10?: Not always. Labels can map to slightly different foot lengths. Use the cm column, then check model guides on both brands.
Which direction should I read first?: Start from the brand you already wear, then open the model fit pages linked below — lasts differ even when charts match.

Clothes sizing uses a separate compare path.