A fitted 7 1/4 hat measures 22 3/4 inches, about 57.7 to 58 cm, around the head. A fitted 7 3/8 measures 23 1/8 inches, about 58.7 to 59 cm. Fitted hat sizes are a direct head-circumference measurement translated into a number, not a size label like small or large, and this is where the two systems actually meet.
New Era and Richardson both publish an official fitted-size conversion chart, and their inches figures for every size match exactly. The centimeter figures differ slightly only because of rounding precision, New Era publishes one decimal place, Richardson rounds to the nearest whole centimeter, not because the actual head measurement differs between the two brands.
New Era Fitted Size Chart
| Fitted Size | Inches | CM |
|---|---|---|
| 7 | 22 | 55.8 |
| 7 1/8 | 22 3/8 | 56.8 |
| 7 1/4 | 22 3/4 | 57.7 |
| 7 3/8 | 23 1/8 | 58.7 |
| 7 1/2 | 23 1/2 | 59.6 |
| 7 5/8 | 23 7/8 | 60.6 |
| 7 3/4 | 24 1/4 | 61.5 |
| 7 7/8 | 24 5/8 | 62.5 |
| 8 | 25 | 63.5 |
Source: New Era's own official sizing chart, fetched live 2026-09-02.
Richardson Fitted Size Chart
| Fitted Size | Inches | CM |
|---|---|---|
| 6 5/8 | 20 3/4 | 53 |
| 6 3/4 | 21 1/4 | 54 |
| 6 7/8 | 21 5/8 | 55 |
| 7 | 22 | 56 |
| 7 1/8 | 22 3/8 | 57 |
| 7 1/4 | 22 3/4 | 58 |
| 7 3/8 | 23 1/8 | 59 |
| 7 1/2 | 23 1/2 | 60 |
| 7 5/8 | 23 7/8 | 61 |
| 7 3/4 | 24 1/4 | 62 |
| 7 7/8 | 24 5/8 | 63 |
| 8 | 25 | 64 |
Source: Richardson's own official cap size conversion chart (System 5 fitted scale), fetched live 2026-09-02. Sizes 6 3/8 and 6 1/2 are not available in Richardson fitted caps, per their own chart.
What About Flexfit
Flexfit's own consumer sizing runs in stretch-fit buckets (small/medium, large/extra-large) rather than a single fitted number per size. Richardson's own published conversion chart maps its Flexfit/Rflex bucket sizing against the same inches and cm scale: the SM-MED bucket spans approximately 7 1/8 to 7 3/8 (22 3/8 to 23 1/8 inches, 57 to 59 cm on that chart), which covers both sizes named in this guide's title. A shopper between fitted sizes, or unsure which fitted number they are, is typically well served by that SM-MED stretch-fit range.
Frequently Asked Questions
How many inches is a 7 1/4 hat?
22 3/4 inches, about 57.7 to 58 cm depending on the brand's rounding. Confirmed identical in inches on New Era's and Richardson's own official fitted-size charts.
How many inches is a 7 3/8 hat?
23 1/8 inches, about 58.7 to 59 cm. Confirmed identical in inches on New Era's and Richardson's own official fitted-size charts.
Do New Era and Richardson use the same hat sizes?
Yes for inches, every fitted size matches exactly between the two brands. The centimeter figures differ only by rounding, New Era publishes one decimal place, Richardson rounds to the nearest whole centimeter.
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What size hat fits a Flexfit SM-MED?
Per Richardson's own published conversion chart, Flexfit/Rflex's SM-MED bucket covers approximately fitted sizes 7 1/8 through 7 3/8, roughly 22 3/8 to 23 1/8 inches.
