Water Freezing Time Calculator (Tap, Salt & Sugar Water)

Water Freezing Time Calculator

Precision estimate using heat-transfer physics

Water amount

Freezer airflow

Water type

Tap / Pure water

Salt water

Sugar water

Conc. 3%

Use seawater (~3.5%)

Container shape

Ice tray

Glass / Cup

Bottle

Bowl

Container material

Plastic

Glass

Metal

Silicone

Ceramic

Starting water temperature25C

1C100C

Custom:

Freezer temperature-18C

-30C-1C

Custom:

Temperature unit

Freezing several containers together?

Good news - each one still takes about the same time as above, since they freeze in parallel. The only thing that matters is airflow around them:

How often is the door opened?

Rarely

Sometimes

Often

Frost / ice buildup on freezer

None

Light

Moderate

Heavy

Calibrate to your exact freezer

Set the fields above to match a real freeze you already did, then enter how long it actually took. We'll tune every future result to your freezer's real performance.

Actual time it took to fully freeze

Using your calibrated freezerReset

--h

--m

ESTIMATED FULL-FREEZE TIME

Cooling: -- Freezing: --

Freezing point of this water: --

Fully hardened (matches freezer temp): --

1

Cooling down - --

2

Turning to ice - --

3

Fully hardening - --

TEMPERATURE OVER TIME

Cooling Freezing Hardening

Estimate based on Newton's Law of Cooling and latent heat of fusion. Actual time depends on your freezer's real efficiency and airflow - use Calibration for the most accurate result.