Smith helmet size chart
The 4 Smith helmets we track cover heads from 48 to 65 cm (18.9 to 25.6 in). A Smith L is not the same as an L from another brand — here are the real numbers.
Smith helmet sizes in cm and inches
Every Smith model in our database, with the head circumference each size actually covers. All of these came from Smith's own published size chart.
| Model | Riding | Sizes | Safety (VT) | Price | |
|---|---|---|---|---|---|
| Convoy MIPS | MTB | XS — 48-52 cm (18.9-20.4 in) S — 51-55 cm (20.1-21.6 in) M — 55-59 cm (21.7-23.2 in) L — 59-62 cm (23.3-24.4 in) XL — 61-65 cm (24.1-25.5 in) | Not rated | ~€68 | View |
| Persist MIPS | Road | S — 51-55 cm (20.1-21.6 in) M — 55-59 cm (21.7-23.2 in) L — 59-62 cm (23.3-24.4 in) XL — 61-65 cm (24.1-25.5 in) | Not rated | ~€109 | View |
| Session MIPS | MTB | S — 51-55 cm (20.1-21.6 in) M — 55-59 cm (21.7-23.2 in) L — 59-62 cm (23.3-24.4 in) | Not rated | ~€135 | View |
| Signal MIPS | Road | XS — 48-52 cm (18.9-20.4 in) S — 51-55 cm (20.1-21.6 in) M — 55-59 cm (21.7-23.2 in) L — 59-62 cm (23.3-24.4 in) XL — 61-65 cm (24.1-25.5 in) | ★★★☆☆ 3/5 | ~€68 | View |
Which Smith size am I?
Measure your head first (tape or string around the widest part, 1-2 cm above the eyebrows), then read it off the table above — Smith sizing is not the same as the next brand's. Across the range, Smith covers 48 to 65 cm (18.9 to 25.6 in). If your measurement falls outside that, no Smith helmet we track will fit you.
Jump to your measurement
- 50 cm: 2 Smith models
- 51 cm: 4 Smith models
- 52 cm: 4 Smith models
- 53 cm: 4 Smith models
- 54 cm: 4 Smith models
- 55 cm: 4 Smith models
- 56 cm: 4 Smith models
- 57 cm: 4 Smith models
- 58 cm: 4 Smith models
- 59 cm: 4 Smith models
- 60 cm: 4 Smith models
- 61 cm: 4 Smith models
- 62 cm: 4 Smith models
- 63 cm: 3 Smith models
- 64 cm: 3 Smith models
- 65 cm: 3 Smith models
Comparing Smith against other brands? The finder shows your size in every brand at once, from one measurement.
Find my sizeSafety ratings
1 of these 4 Smith models have been crash-tested by the Virginia Tech Helmet Lab, whose STAR ratings are independent of the brands. Where we show nothing, the model has not been tested — that is not the same as testing badly.