Government-backed temperature guidance
Food Danger Zone Temperature: 40°F to 140°F
The short answer
USDA defines the food danger zone as 40°F to 140°F (4°C to 60°C). Refrigerate perishable food within 2 hours, or within 1 hour when the temperature is above 90°F (32°C).
Decision table
| Situation | Limit or action | What it means |
|---|---|---|
| Cold holding | 40°F (4°C) or below | Keep refrigerated food cold |
| Danger zone | 40–140°F (4–60°C) | Bacteria can multiply rapidly |
| Hot holding | 140°F (60°C) or above | Keep cooked food hot |
| Normal room-temperature limit | 2 hours | Refrigerate or discard |
| Above 90°F (32°C) | 1 hour | Refrigerate or discard |
How to apply the rule
Use an appliance or food thermometer to verify the temperature. Control dials, food color, smell, and touch are not substitutes for a measured reading.
The package instructions control when they are stricter. If the time, temperature, or handling history is unknown, the page cannot prove the food is safe; choose the conservative action.
Practical steps
- Identify the exact food, package state, and whether it is raw or cooked.
- Record the thawing method, storage temperature, and elapsed time that actually apply.
- Use the strictest applicable row in the table.
- Do not taste food to determine safety after excessive warm exposure.
Use the interactive safety tools
Check temperatures, thawing, leftovers, and refreezing with the matching ShelfDate helper.
Related government-backed guides
Government sources
ShelfDate reorganizes the published rules for faster household decisions without replacing the original guidance.