Eggs Calculator
Use the Eggs Calculator for a transparent, instant calculation with validated inputs and cited sources. For a query such as “how long to boil an egg”, enter the matching values and units below and review the stated assumptions.
How to use this calculator
Enter the requested values and units.
Review the assumptions and any warnings shown with the result.
Use the result together with the cited source and your real-world requirements.
Formula
Use the selected U.S. egg size to choose the covered hot-water standing time: 9 minutes for medium, 12 for large, or 15 for extra large, after heating the one-layer pan just to boiling and removing it from heat.
Worked example
Worked example: Inputs: U.S. shell egg size: Large. Outputs: Covered hot-water standing time: 12 min; Water above eggs: 1 in.
Assumptions and limits
- The result depends on the values, units, and assumptions entered. It does not infer missing context.
Sources
- American Egg Board: How to Make Hard-Boiled EggsReference material reviewed for the stated method, units, or domain. Confirm that its scope matches your use case. Reviewed 2026-08-14.
- U.S. Food and Drug Administration: What You Need to Know About Egg SafetyReference material reviewed for the stated method, units, or domain. Confirm that its scope matches your use case. Reviewed 2026-08-14.
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Frequently asked questions
How does the Eggs Calculator work?
Use the selected U.S. egg size to choose the covered hot-water standing time: 9 minutes for medium, 12 for large, or 15 for extra large, after heating the one-layer pan just to boiling and removing it from heat.
What should I enter?
U.S. shell egg size
What should I verify?
Review the assumptions and any warnings shown with the result. The result depends on the values, units, and assumptions entered. It does not infer missing context.
Last updated 2026-08-14 · covered-hot-water-egg-time-v1 · opportunity-content-2026-08-14 · Trusty Calculator Editorial Team