Aquarium maintenance cost attribution calculator

Calculate allocated total cost by tank and total all-tank cost with your own figures.

Your numbers

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

Choose the currency for these amounts. Changing it keeps your numbers and does not convert exchange rates.

Use allocated total cost by tank and total all-tank cost to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Tank-specific consumable costs (USD)
10,20,15
Allocation weights for shared utilities
1,2,1
Shared utility cost (USD)
40
Allocated total cost by tank (USD)
[20,40,25]
Total all-tank cost (USD)
$85.00

Try another scenario

Tank-specific consumable costs (USD)
11.0,20.0,15.0
Allocation weights for shared utilities
1,2,1
Shared utility cost (USD)
40
Allocated total cost by tank (USD)
[21,40,25]
Total all-tank cost (USD)
$86.00
Calculation method

Calculation method

Allocated total cost by tank (USD)

Shared allocation proportional to nonnegative supplied weights.

Total all-tank cost (USD)

Shared allocation proportional to nonnegative supplied weights.

Symbols and units
a
Tank-specific consumable costs (USD)
b
Allocation weights for shared utilities
c
Shared utility cost (USD)

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

  • Calculation uses the entered values and stated mathematical model; quantities must use the labelled units. 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. Shared allocation proportional to nonnegative supplied weights.
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