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Chicken egg size: length × breadth by egg size, USDA weight classes, 3D egg models

Name: Chicken egg size: length × breadth by egg size, USDA weight classes, 3D egg models dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

How big is a chicken egg in mm? · Standard part · basis: Peer-reviewed measurement of 2,476 eggs from nine genotypes (length, breadth, weight); USDA size classes by weight per dozen

Also called: egg dimensions mm, large egg size, egg size chart, egg holder 3d print, egg stl

Exact dimensions. True size, with no printing tolerance added.

length: 56.2 mm
width: 42.96 mm
height: 42.96 mm

Notes

Measured means: egg-type hens (supermarket eggs) 56.2 × 43.0 mm, 58.3 g; meat-type hens 59.1 × 44.1 mm, 64.6 g; small standard breeds 51.3 × 39.8 mm, 45.4 g. Overall 57.9 × 43.5 mm.
Breadth / length (shape index) about 0.75; the widest point sits slightly toward the blunt end (modelled with the Hügelschäffer egg curve).
US sizes are by weight per dozen, not dimensions: Jumbo 30 oz, Extra Large 27, Large 24, Medium 21, Small 18, Peewee 15 (minimums). A US Large egg averages at least 56.7 g, close to the egg-type mean above.
Holders and incubator trays: size the seat for the breadth (43–44 mm for Large / Extra Large) and let the egg sit blunt end up.

Chicken egg size: length × breadth by egg size, USDA weight classes… size chart

egg	length (mm)	breadth (mm)	weight (g)
egg-type hens (mean)	56.2	42.96	58.34
meat-type hens (mean)	59.05	44.06	64.62
standard breeds (mean)	51.33	39.78	45.4
all 2,476 eggs	57.88	43.52	61.88
USDA Large (min per egg)	None	None	56.7
USDA Extra Large (min per egg)	None	None	63.8
USDA Jumbo (min per egg)	None	None	70.9

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Turkish Journal of Agriculture - Food Science and Technology	Weight and shape-related traits in eggs from different chicken genotypes	web	Publisher's page; dimensions are facts
Eggland's Best	USDA egg size classes (weight per dozen)	web	Publisher's page; dimensions are facts

Free files

★ Free files 4 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

egg-layer-56.2x43.0	Chicken egg, egg-type hens mean: 56.2 × 43.0 mm (≈58 g, US Large)	STEP · STL
egg-meat-type-59.1x44.1	Chicken egg, meat-type hens mean: 59.1 × 44.1 mm (≈65 g, US Extra Large)	STEP · STL
egg-small-51.3x39.8	Chicken egg, standard breeds mean: 51.3 × 39.8 mm (≈45 g)	STEP · STL
egg-cup-large	Egg cup / tray cell for Large eggs (Ø43 breadth)	STEP · STL

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Plain text: sheet.txt · JSON: /api/geometry?object=chicken-eggs