Sweater Size Calculator: Size for Pullovers, Cardigans and Chunky Knits
Free tool · Updated October 2, 2026 · By CouponTalk
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Enter your measurements to see your result.
Quick answer
Sweaters are sized by chest or bust, like T-shirts. Choose your usual size for a sweater worn over a T-shirt. If you will wear it over a collared shirt, or it is a chunky knit, size up when you are in the top inch of your size. A men's 38-inch chest is size M; worn over a shirt it is still M, while a 39-inch chest goes to L.
How to measure
- Measure your chest or bust over a thin T-shirt.
- Choose the knit and what you will wear underneath.
- Use the size shown; it adds room only when you need it.
Sweater & Cardigan Size Chart
| Size | Men's chest (body) | Women's bust (body) |
|---|---|---|
| XS | 33–35" | up to 32" |
| S | 35–37" | 32–34" |
| M | 37–39" | 34–36" |
| L | 39–41" | 36–38" |
| XL | 41–43" | 38–40" |
| XXL | 43–45" | 40–42" |
| 3XL | 45–47" | 42–44" |
Knit stretch varies. Check the garment chest on the product page.
Frequently asked questions
Do wool sweaters shrink?
Yes, wool can felt and shrink in hot water. Hand wash cold or use a wool cycle, and dry flat.
How should a sweater fit at the shoulders?
The shoulder seam should sit at the edge of your shoulder, unless it is a drop-shoulder style.
Cardigan or pullover: same size?
Yes. Cardigans are often worn open, so a snug fit at the chest is fine.
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