Aquarium temperature mixing capacity calculator

Calculate ideal mixed water temperature with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use ideal mixed water temperature to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Water masses (kg)
100,20
Initial temperatures (°C)
25,18
Heat lost to surroundings (kJ)
0
Ideal mixed water temperature (°C)
23.833333

Try another scenario

Water masses (kg)
101.0,20.0
Initial temperatures (°C)
25,18
Heat lost to surroundings (kJ)
0
Ideal mixed water temperature (°C)
23.842975
Calculation method

Calculation method

Ideal mixed water temperature (°C)

Constant specific heat4.186kJ/kgK: Tmix=weighted T - heatLoss/(cp totalMass).

Symbols and units
a
Water masses (kg)
b
Initial temperatures (°C)
c
Heat lost to surroundings (kJ)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Water only, no phase change; tank and décor thermal mass excluded. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Water only, no phase change; tank and décor thermal mass excluded.
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