On Running Size Charts
Complete sizing guide for On Running with measurements, fit tips, and global conversions
On Running offers sizing across men, women, shoes. Use the tabs to filter by category, or scroll to see all available charts with measurements and conversions.
Fit Summary
On Running is a Swiss performance running brand known for CloudTec cushioning technology. Shoes run true to size with a slightly narrow fit. Apparel is athletic and form-fitting.
Last updated: Q3 2026 · Reviewed quarterly by JC, SizeHub editor
Men's Sizing
Tops & Shirts
| Size | US | Chest (in) | Waist (in) | Neck (in) |
|---|---|---|---|---|
| XS | 34 | 34-36 | 28-30 | 14-14.5 |
| S | 36 | 36-38 | 30-32 | 14.5-15 |
| M | 38-40 | 38-40 | 32-34 | 15-15.5 |
| L | 42-44 | 42-44 | 34-36 | 15.5-16 |
| XL | 46-48 | 46-48 | 36-38 | 16-16.5 |
| XXL | 50-52 | 50-52 | 38-40 | 16.5-17 |
Pants & Bottoms
| Size | Waist (in) | Hip (in) | Inseam (in) |
|---|---|---|---|
| 28 | 28 | 34 | 30-32 |
| 30 | 30 | 36 | 30-32 |
| 32 | 32 | 38 | 30-32 |
| 34 | 34 | 40 | 30-32 |
| 36 | 36 | 42 | 30-32 |
| 38 | 38 | 44 | 30-32 |
Shoes
| US | UK | EU | Foot Length (cm) |
|---|---|---|---|
| 7 | 6 | 40 | 25 |
| 8 | 7 | 41 | 26 |
| 9 | 8 | 42 | 27 |
| 10 | 9 | 43 | 28 |
| 11 | 10 | 44 | 29 |
| 12 | 11 | 45 | 30 |
| 13 | 12 | 46 | 31 |
Women's Sizing
Tops & Shirts
| Size | US | Bust (in) | Waist (in) | Hip (in) |
|---|---|---|---|---|
| XS | 0-2 | 31-32 | 24-25 | 34-35 |
| S | 4-6 | 33-34 | 26-27 | 36-37 |
| M | 8-10 | 35-36 | 28-29 | 38-39 |
| L | 12-14 | 37-39 | 30-32 | 40-42 |
| XL | 16-18 | 40-42 | 33-35 | 43-45 |
Pants & Bottoms
| Size | US | Waist (in) | Hip (in) | Inseam (in) |
|---|---|---|---|---|
| 24 | 00 | 24 | 34 | 28-30 |
| 25 | 0 | 25 | 35 | 28-30 |
| 26 | 2 | 26 | 36 | 28-30 |
| 27 | 4 | 27 | 37 | 28-30 |
| 28 | 6 | 28 | 38 | 28-30 |
| 29 | 8 | 29 | 39 | 28-30 |
| 30 | 10 | 30 | 40 | 28-30 |
| 31 | 12 | 31 | 41 | 28-30 |
| 32 | 14 | 32 | 42 | 28-30 |
Shoes
| US | UK | EU | Foot Length (cm) |
|---|---|---|---|
| 5 | 3 | 35 | 22 |
| 6 | 4 | 36 | 23 |
| 7 | 5 | 37 | 24 |
| 8 | 6 | 38 | 25 |
| 9 | 7 | 39 | 26 |
| 10 | 8 | 40 | 27 |
| 11 | 9 | 41 | 28 |
Shopping Tips
Shoes run true to size but narrow — if you have wide feet, consider half a size up. Their running apparel is compression-like and fits snug by design.
Size Comparison
Similar sizing to Nike running shoes. Slightly narrower than New Balance. Comparable to Hoka in cushioning but sleeker profile.
Ready to shop On Running?
Find your perfect size and shop with confidence
Remember my size
Saved locally on your device. Next time you visit, your On Running sizes show up instantly.
Frequently Asked Questions
Do On Running shoes run true to size?
Yes, but they're slightly narrow. Wide-footed runners should size up half a size.
Are On Running shoes good for everyday wear?
Yes — the Cloudswift and Cloud 5 are popular lifestyle crossover models.
What makes On different from other running brands?
Their CloudTec cushioning provides a unique 'running on clouds' sensation with firm landings and soft takeoffs.
How to Measure
Chest
Measure around the fullest part of your chest, keeping the tape horizontal.
Waist
Measure around your natural waistline, keeping the tape comfortably loose.
Hips
Stand with feet together and measure around the fullest part of your hips.