It usually takes about 3 to 8 hours for ice trays to freeze into ice cubes, and the specific time will be affected by many factors.
Refrigerator temperature setting: If the refrigerator has good performance and the temperature is set at minus 18 degrees, the freezing time may be 3 to 4 hours. If the refrigerator temperature is set above minus 18 degrees, it will take 5 to 8 hours.
Container material: Using metal containers will speed up the freezing process, while plastic or silicone containers are relatively slow.
Ambient temperature: It takes more time to reach the set freezing temperature in a high temperature environment.
Therefore, you can roughly estimate the time it takes for ice cubes to freeze based on your refrigerator performance and temperature settings, as well as the container material you choose.