FinanceFormula-based · Runs in your browser

Checkbook Calculator

Apply a list of deposits and withdrawals to an opening balance and create a running register.

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Inputs

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Required
$
Required

Result

Updates as valid inputs change.

Calculated locally
Ending balance
Total deposits
Total withdrawals
Transactions
Lowest running balance

Saved locally, explained clearly

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Calculation steps

Follow what happened from the selected formula to the displayed answer.

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  1. 1

    Formula selected

    The calculator uses the following formula or method.

    ending balance = opening balance + sum of signed transactions

  2. 2

    Values entered

    Your values are placed into the calculation.

    Enter values to see what is used in this step.

  3. 3

    Result calculated

    The formula or method produces the following result values.

    Results will appear after a successful calculation.

  4. 4

    Answer formatted

    Displayed values are rounded and formatted using each output’s configured precision.

Scenario comparison

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Recent calculations

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Data and privacy

What this calculator does

Apply a list of deposits and withdrawals to an opening balance and create a running register.

How it works

The calculator evaluates ending balance = opening balance + sum of signed transactions. Inputs are checked before calculation, and invalid values such as zero denominators or out-of-range selections produce a clear error instead of a misleading result.

Input query strings and outputs

Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.

Input query strings

2
  • ?openingBalance= Opening balance

    Money · Required · Default: 1,000

  • ?transactions= Transactions

    Text · Required · Default: 250, -42.75, -85.20, 500, -12.99

Outputs

5
  • endingBalance Ending balance

    Currency · Primary output

  • totalDeposits Total deposits

    Currency

  • totalWithdrawals Total withdrawals

    Currency

  • transactionCount Transactions

    Whole number

  • lowestBalance Lowest running balance

    Currency

Inputs and results

The inputs are Opening balance, Transactions. Results include Ending balance, Total deposits, Total withdrawals, Transactions, Lowest running balance.

Sources
  • No external reference is listed for this calculator. Its formula and variable definitions are shown above.
Limitations
  • Estimates use the rates, timing, and assumptions entered. Fees, taxes, lender rules, and future changes are included only where explicitly shown.