How Long Can an Ice Cube Last?

Get familiar with how ice melts where you are located.

Place an ordinary ice cube on a support—what it is resting on, usually a plate or plastic lid—out in the open air. Measure how much time it takes to melt. This will give you a baseline for later comparison.

Here are the results of this step at our location. We placed an ice cube on a plastic lid in the open air. The temperature of the air was 23ºC (73ºF). It took one hour and 42 minutes for our ice cube to melt completely when exposed to the open air.

ice cube ice cube ice cube ice cube
Start After one hour After one hour
and 30 minutes
After one hour
and 42 minutes