Maggie the MerleFrenchie Harness Fit Finder
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Enter a chest measurement to see results.
Size charts last checked 2026-10-21. Always confirm on the maker's page before buying. Links marked "Check price" may be affiliate links.
All charts at a glance
| Harness | Size | Chest | Other limits | Source |
|---|---|---|---|---|
| Ruffwear Front Range Harness | XXS | 13–17 in | — | maker chart |
| XS | 17–22 in | — | ||
| S | 22–27 in | — | ||
| M | 27–32 in | — | ||
| L/XL | 32–42 in | — | ||
| Julius-K9 IDC Powerharness | Baby 2 (2XS) | 13–17.5 in | max 11 lb | maker chart |
| Mini-Mini (XS) | 15.5–20.5 in | max 16 lb | ||
| Mini (S) | 20–26.5 in | max 35 lb | ||
| Size 0 (M) | 23–30 in | max 55 lb | ||
| Size 1 (L) | 26–33.5 in | max 70 lb | ||
| Kurgo Tru-Fit Smart Harness | X-Small | 12–18 in | neck 9–13 in | maker chart |
| Small | 16–22 in | neck 12–20 in | ||
| Medium | 18–28 in | neck 16–25 in | ||
| Large | 24–34 in | neck 18–30 in | ||
| Voyager Step-In Air Harness | M | 16–18 in | neck 12–13.5 in; max 18 lb | maker chart |
| L | 18–20.5 in | neck 13.5–15.5 in; max 23 lb | ||
| XL | 20.5–23 in | neck 15.5–18 in; max 28 lb | ||
| Puppia Soft Harness (PDCF-AC30) | S | 33–49 cm | neck opening 26 cm | maker chart |
| M | 39.5–61 cm | neck opening 32 cm | ||
| L | 50–77 cm | neck opening 37 cm | ||
| XL | 56–83 cm | neck opening 41 cm |
Chart sizes far outside the French Bulldog range (for example, Julius-K9 sizes 2–4 and Kurgo X-Large) are left out to keep things readable. Julius-K9 weights come from the Julius-K9 USA chart.
Left out on purpose
- Wild One Cushioned Harness: The product page shows two different chest charts (Product Details vs. size table), so we couldn't confirm which is current.
- Hurtta, Rabbitgoo, PetSafe Easy Walk and others: Not yet checked against a manufacturer chart. Not included until we can verify them.
FAQ
Where do the sizes come from?
Each range is copied from the manufacturer's own published size chart, linked under every result. We last checked them on 2026-10-21. Makers do change their charts, so confirm on the product page before you buy.
My dog fits two sizes. Which one?
Use the brand's own tie-break, which we show with each result. Ruffwear, Kurgo and Puppia say to size up. Voyager says to match the chest closely and not exceed the max weight.
Does this tool tell me which harness is best?
No. It only tells you which size of each harness fits your measurement. For what to look for in an airway-safe design, read our harness guide.