Pool water meter reconciliation calculator

Calculate unexplained balance and explained consumption share with your own figures.

Your numbers

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

Use unexplained balance and explained consumption share to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Metered refill consumption (L)
12000
Known intentional fills (L)
5000
Backwash and rinse (L)
3000
Measured evaporation replacement (L)
2500
Other recorded losses (L)
500
Unexplained balance (L)
1000
Explained consumption share (%)
91.666667

Try another scenario

Metered refill consumption (L)
13200.000000000002
Known intentional fills (L)
5000
Backwash and rinse (L)
3000
Measured evaporation replacement (L)
2500
Other recorded losses (L)
500
Unexplained balance (L)
2,200
Explained consumption share (%)
83.333333
Calculation method

Calculation method

Unexplained balance (L)

Unexplained=meter-(fills+backwash+evaporation+other).

Explained consumption share (%)

Unexplained=meter-(fills+backwash+evaporation+other).

Symbols and units
a
Metered refill consumption (L)
b
Known intentional fills (L)
c
Backwash and rinse (L)
d
Measured evaporation replacement (L)
e
Other recorded losses (L)

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

  • Negative unexplained balance indicates inconsistent records; not an automatic leak diagnosis. 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. Negative unexplained balance indicates inconsistent records; not an automatic leak diagnosis.
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