Egg sizes: UK and US compared
In UK sizes, an American recipe's large egg is
Medium
US large eggs must average at least 56.7g each, in the shell. That's inside the UK medium band of 53g to 63g.
US sizes in UK terms
| US size | Minimum average, in shell | UK band it falls in | Out of the shell |
|---|---|---|---|
| Jumbo | 70.9g | Large (L) | 63g |
| Extra large | 63.8g | Large (L) | 56g |
| Large | 56.7g | Medium (M) | 50g |
| Medium | 49.6g | Small (S) | 44g |
| Small | 42.5g | Small (S) | 38g |
UK egg sizes
| UK size | Weight in the shell |
|---|---|
| Very large (XL) | 73g or more |
| Large (L) | 63g to under 73g |
| Medium (M) | 53g to under 63g |
| Small (S) | under 53g |
When it matters
Sizes are bands, so two eggs of the same size can differ by several grams. If a recipe gives egg weights, weigh yours. See beaten eggs in cups and grams.
UK sizes: Commission Regulation (EC) No 589/2008 as it applies in the UK, Article 4: Grading of Class A eggs by weight. US sizes: USDA, United States Standards, Grades, and Weight Classes for Shell Eggs (AMS 56), §56.218 Table I. Out-of-shell weights: USDA FoodData Central, SR Legacy, Egg, whole, raw, fresh (01123). Checked 2026-10-25.