How much time does it take for a cup of coffee to cool down to room temperature?

Asked on: 7/21/2025

This question has been asked1times.

A standard cup of coffee typically takes about 30-45 minutes to cool to room temperature.

Estimated Duration: 45 minutes

The cooling time of coffee depends on factors like initial temperature, cup material, and ambient conditions. A hot cup (around 85°C/185°F) in a ceramic mug at room temperature (20-25°C/68-77°F) usually cools to a drinkable temperature (60°C/140°F) in 5-10 minutes and reaches room temperature in 30-45 minutes. To speed up cooling, use a wider cup, stir occasionally, or add a small amount of cold liquid. Insulated mugs or lids will significantly slow the process. The cooling rate follows Newton's Law of Cooling, where the temperature difference between the coffee and surroundings drives the speed of heat loss.