Quick answer: A standard household ice tray often takes a few hours to freeze, but there is no universal time.
What to know
Cube size, mold material, starting water temperature, tray placement, and freezer performance all affect freezing speed.
Practical tips
For a gathering, make ice the day before rather than planning around a precise freezing time. Test a cube before emptying the tray.
Frequently asked question
Does a full freezer freeze ice faster?
A reasonably stocked freezer can hold temperature well, but blocked airflow or newly added warm food may slow freezing.
Wondelique — Wonder Why? We Have Answers.
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