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Free Online Business Days Calculator

Count Monday–Friday days, optionally excluding listed holidays.

Your input stays on this device. Processing is bounded; regex runs in a worker with a two-second timeout.

Result

How to use Business Days Calculator

Count Monday–Friday days, optionally excluding listed holidays. Only Monday–Friday counts. The start is included and the end excluded. Only manually entered holidays are removed; no national holiday calendar is assumed.

  1. Set Start / calendar date.
  2. Set End date (excluded for day counts).
  3. Set Excluded holidays (YYYY-MM-DD, separated by spaces).
  4. Run the tool, review the result and its stated limitations, then copy or download if needed.

Example & practical use

Count Monday–Friday days, optionally excluding listed holidays. The example below demonstrates Start / calendar date; End date (excluded for day counts); Excluded holidays (YYYY-MM-DD, separated by spaces).

Example input:
{
  "date": "2024-01-01",
  "end": "2024-01-08",
  "holidays": "2024-01-01"
}
Expected result (relevant fields):
{
  "businessDays": 4
}

Features & result limitations

Only Monday–Friday counts. The start is included and the end excluded. Only manually entered holidays are removed; no national holiday calendar is assumed.

Frequently asked questions

What inputs does Business Days Calculator accept?

Start / calendar date; End date (excluded for day counts); Excluded holidays (YYYY-MM-DD, separated by spaces)

How should I interpret the Business Days Calculator result?

Only Monday–Friday counts. The start is included and the end excluded. Only manually entered holidays are removed; no national holiday calendar is assumed.

Where does Business Days Calculator process my data?

Inputs are processed locally in your browser. Submitted text is not sent to external services. A successful-run event increments an aggregate tool counter without your input.