The egg float test: freshness versus safety
Floating tells you about an egg’s air cell, not a safety guarantee.
Evidence: Important limitationImportant limitationProfessional review not claimed
What the sources say
USDA explains that an egg can float when its air cell becomes large enough. A floating egg may still be safe, so the test alone cannot determine safety.
Evidence assessment: Important limitation. This describes the scope of the guidance we checked, not proof that the remedy works for you.
Cautions
- Do not treat sinking as proof an egg is safe. Follow local storage, date and cooking guidance. Discard eggs with signs of spoilage.
No method is given for this entry. The guidance we checked discourages this use or shows it does not do what tradition claims.
Ingredients & category
Sources
- USDA Food Safety and Inspection Service: Shell eggs — link and wording checked 30 September 2026
Source-checking is not clinical or veterinary review. Specific historical origin not established from the source reviewed.