Food Safety Temperature Calculator
Determine safe internal cooking temperatures and required rest times for different foods. Use it to ensure meat, poultry, and seafood are cooked to USDA-recommended safe temperatures.
Last updated: September 2026
Formula below · 2 sources (fdc.nal.usda.gov, Wikipedia) · Updated Sep 2026
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About this calculator
Food safety temperature guidance is based on the principle that harmful bacteria (Salmonella, E. coli, Listeria) are destroyed when food reaches a specific internal temperature. The USDA safe minimum internal temperatures are: 165°F for all poultry (including ground poultry), 160°F for ground beef, pork, veal and lamb and for egg dishes, and 145°F for whole cuts of beef, pork, veal and lamb (followed by a 3-minute rest) and for fish and shellfish. The calculator compares your thermometer reading with the target for the food you choose. If the reading is already at or above the target, no more cooking time is added; otherwise it estimates the remaining time as (target − current temperature) × thickness × 0.5 minutes, a rough rule of thumb. It then adds the rest time you select, and for whole cuts it always includes at least the USDA-required 3 minutes. The time estimate is only a planning aid: food is safe when a calibrated thermometer in the thickest part reads the USDA minimum, not when a timer runs out.
How to use
Example: You're cooking a chicken breast (Poultry, target 165°F) that currently reads 140°F internally, is 1 inch thick, with no rest selected. The current temperature is below the target, so additional cooking time is estimated: (165 − 140) × 1 × 0.5 = 12.5 minutes, plus 0 minutes of rest = 12.5 minutes more on the heat. A 2-inch pork chop (Whole cut, 145°F) that already reads 146°F needs no more cooking, but the calculator still returns the 3-minute USDA rest. Always verify with a calibrated instant-read thermometer before serving.
Frequently asked questions
What are the USDA safe internal cooking temperatures for common meats?
The USDA recommends 165°F for all poultry including chicken, turkey and ground poultry, 160°F for ground beef, pork, veal and lamb and for egg dishes, and 145°F for whole cuts of beef, pork, veal and lamb (with a 3-minute rest) and for fish and shellfish. These temperatures are the minimum thresholds at which dangerous pathogens like Salmonella and E. coli are reliably destroyed. It's critical to measure temperature at the thickest part of the food, away from bone. Using a calibrated food thermometer is the only reliable way to verify doneness.
Why is rest time required after cooking meat to a safe temperature?
For whole cuts of beef, pork, veal and lamb, the USDA's 145°F minimum includes a 3-minute rest: during that time the temperature stays constant or keeps rising, which continues to destroy pathogens. The rest is part of the safety standard for those cuts, so the calculator always includes at least 3 minutes for them; it is not required for poultry or ground meat, which are safe as soon as they reach 165°F or 160°F. Resting also improves texture by allowing juices to redistribute, making the meat more flavorful and moist.
How does food thickness affect cooking time and food safety?
Thicker foods require longer cooking times because heat must conduct from the outer surface inward to reach the center. A 2-inch thick pork chop will take roughly twice as long to reach 145°F at its center as a 1-inch chop at the same pan temperature. This is why surface browning can be misleading — meat may look done on the outside while the center remains dangerously undercooked. Always use a thermometer inserted into the thickest part, avoiding bone, to confirm the food has reached a safe internal temperature throughout.