Exact Business DaysFree deadline calculator
Add business days

Add Business Days

Choose the Add days tab to count forward from a start date by a set number of business days, skipping weekends and optional public holidays.

Calendar: Canada — Ontario. Choose the country and region whose holidays apply to your calculation.

Result

Friday, September 25, 2026

10 business days after Sunday, September 13, 2026.

0 public holidays would be excluded for Ontario, Canada.

Included in this calculation

  • Weekends are excluded.
  • Public holidays are excluded for Ontario, Canada.
  • Ontario uses the nine public-holiday dates in the Employment Standards Act. Civic Holiday, Easter Monday, and Remembrance Day are not excluded by default.
  • Holiday data currently covers 2026 and 2027.
  • Business holiday rules can vary by employer, industry, city, and contract.

Count forward accurately

Instead of adding calendar days, this mode moves forward only when the next day is a business day under the selected settings.

Good for due dates

Use it for response deadlines, service windows, delivery estimates, contract periods, invoice terms, and internal workback plans.

Holidays can change the answer

If a public holiday falls inside the period and holiday exclusion is enabled, the deadline moves to the next valid business day.

Did you know?

Thanksgiving in the United States is observed on the fourth Thursday in November. If you add business days across that week, the holiday can change the final date.

Simple assumptions

The result shows the date reached and how many public holidays were excluded from the calculation.

Frequently asked questions

What is included in the add business days?

The calculator excludes weekends and can also exclude public holidays for the selected country or region. The result shows the assumption used in the calculation.

Are public holidays excluded automatically?

Public holidays are excluded when the Weekends + holidays option is turned on. You can switch to Weekends only if you want a weekday-only count.

Can I share or copy the result?

Yes. Use Copy result for the plain answer, or Copy link to share the same calculation settings with someone else.

Should I use this for legal or payroll deadlines?

Use the calculator as a helpful planning tool, but review important deadlines because business-day rules can vary by employer, contract, industry, city, and jurisdiction.