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Business-day count calculator
Count Monday-to-Friday dates, excluding any holiday dates you supply.
Numbers and dates
Text
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter values using decimal points and choose the operation or assumptions shown.
- Select Calculate and review the numerical result and its stated conventions.
- Download the result or amortization schedule when available. Reset restores the example inputs.
Examples
2026-01-01 through 2026-01-08 excluding the end date and January 1 holiday contains four business days.
Limitations
- Runs locally. Decimal calculations use floating-point arithmetic, rounded to 12 significant digits; monetary displays use two decimals. Exact integer and fraction results are labelled separately.
- Start is included; end inclusion is optional. Monday–Friday only, with up to 1,000 entered holiday dates; duplicates count once. No jurisdiction holidays are fetched or assumed. Years 0001–9999, end must not precede start.
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