Egg Size Converter
Egg weight and large equivalents from count and size.
What it does
Egg sizes weigh dozens, not shells. Jumbo runs 30 oz per dozen down through Large at 24 to Peewee at 15, so 6 jumbo eggs stand in for 7.5 large. Recipes written for Large need translation for every other carton.
The tool above converts count to weight with large-egg equivalents attached. Enter count and USDA size, and it prints ounces, grams, and large equals. Defaults show 8 large at 16 oz; 10 medium weigh 17.5 oz like 8.75 large.
Federal graders define the scale. USDA AMS terms list 30/27/24/21/18 dozen ounces with ARS adding Peewee at 15 plus per-egg and case figures, while the American Egg Board confirms the 50 g large egg. Size means net weight per dozen throughout.
Baking follows weight once converted. Swapping medium for large 1:1 shortchanges batters by an eighth per egg, while jumbo overshoots; equivalents keep ratios exact. Weigh cracked eggs for pastry work.
How to use
- Enter the egg count.
- Pick the USDA size.
- Read ounces first, then grams.
- Read large-egg equivalents.
- Swap sizes by equivalents.
- Bake from weight for precision.
Formula
- count
- Egg count, 0 and up.
- dozen oz
- USDA net oz per dozen by size.
USDA AMS dozen minima with ARS per-egg and case figures; AEB confirms the 50 g large egg.
Worked example
Example: 8 large eggs
Defaults: 8 large eggs.
- Inputs: 8 large eggs.
- Dozen rate: large runs 24 oz per dozen.
- Ounces: 8 / 12 x 24 = 16 oz.
- Grams: 16 x 28.3495 = 453.6 g.
- Large equal: 16 / 2 = 8. Tool shows 16 oz, 453.6 g, 8 large eggs.
Reference table
| Size | oz/dozen | Grams/dozen |
|---|---|---|
| Jumbo | 30 | 850 |
| Extra Large | 27 | 765 |
| Large | 24 | 680 |
| Medium | 21 | 595 |
| Small | 18 | 510 |
| Peewee | 15 | 425 |
Limits
- USDA sizes only. Other countries differ.
- Minimum weights; cartons run over.
- Weight math; volume separates vary.
- Cracked weights exclude shells.
Common mistakes
- Swapping sizes 1:1 in baking.
- Reading size as dimensions.
- Ignoring equivalents across cartons.
- Assuming all larges weigh 2 oz exactly.
- Cracking by count for pastry.
Try it yourself
Quick checks. Answers sit tucked under each question.
6 jumbo eggs?
6 / 12 x 30 = 15 oz. Grams 425.2. Large equal 15 / 2 = 7.5.
10 medium eggs?
10 / 12 x 21 = 17.5 oz. Grams 496.1. Large equal 17.5 / 2 = 8.75.
Questions
What are the USDA sizes?
Net weight per dozen: Jumbo 30, XL 27, Large 24, Medium 21, Small 18, Peewee 15 oz.
How is weight figured?
Count over 12 times dozen ounces. Here 8/12 x 24 = 16 oz.
How are large equivalents figured?
Total ounces over 2 (one large = 2 oz). Here 6 jumbo weigh 15 oz like 7.5 large.
Is large the recipe standard?
Yes. Large is the recipe standard; graders inspect size with quality marks.
Does size mean dimensions?
Yes. Size means weight per dozen, not shell dimensions.
How many grams is one large egg?
Yes. Average large egg runs 50 g per American Egg Board.
Sources
- USDA AMS: Poultry and Egg Terms (dozen ounces)
- USDA ARS: Shell Egg Quality (full size table)
- American Egg Board: 50 g Large Egg