To calculate time is to make the future less invisible.
This calculator counts only the weekdays in a date range. It skips Saturday and Sunday, then lets you choose whether the start and end dates count. The result is useful for ordinary work planning, but public holidays still need a local calendar.
CalculationTime counts business days by scanning the selected Gregorian date range for Monday-through-Friday dates, applying explicit start-date and end-date inclusion controls, and subtracting selected 2026 official-source public-holiday presets when requested.
Business days = count of included dates where weekday is Monday through Friday - selected public holidays that fall on included weekdays. Start and end dates are included only when their toggles are set to 1.
15 May 2026 is a Friday and 29 May 2026 is also a Friday. Including both endpoints gives 11 Monday-to-Friday dates. If the US federal or UK England & Wales 2026 preset is selected, Monday 25 May 2026 is a holiday in that preset, so the calculator subtracts one holiday and returns 10 business days.
Master’s Tip: for contracts, payment terms, freight cutoffs or legal notices, keep the chosen calendar source beside the result. A valid business-day count is not just a number; it is a number plus the jurisdiction, endpoint rule, holiday rule and last-checked source.
Default basis: Monday-to-Friday weekday count with no public holidays. Optional 2026 presets use official-source holiday lists for Australia national holidays, US federal holidays, UK England & Wales bank holidays, and Canada CRA/federal public holidays. State, province, territory, local, banking, school, court and employer-specific calendars may differ.
Methodology & Accuracy
CalculationTime pages are built around visible arithmetic: the formula, assumptions, worked example and practical limitations are shown so the result can be checked rather than simply trusted.
Business days = count of included dates where weekday is Monday through Friday - selected public holidays that fall on included weekdays. Start and end dates are included only when their toggles are set to 1.
Default basis: Monday-to-Friday weekday count with no public holidays. Optional 2026 presets use official-source holiday lists for Australia national holidays, US federal holidays, UK England & Wales bank holidays, and Canada CRA/federal public holidays. State, province, territory, local, banking, school, court and employer-specific calendars may differ.
Where a calculator follows a named legal, trade or industry standard, that standard is cited visibly. Otherwise the page uses transparent general arithmetic and states its limits.Master’s Tip: for contracts, payment terms, freight cutoffs or legal notices, keep the chosen calendar source beside the result. A valid business-day count is not just a number; it is a number plus the jurisdiction, endpoint rule, holiday rule and last-checked source.
Yes by default. Set “Include start date” to 0 if the count should begin on the following date.
Yes when you select one of the 2026 public-holiday presets. Leave the preset at “No public holidays” for a pure weekday count.
A business day is counted when the date falls on Monday, Tuesday, Wednesday, Thursday or Friday.
Yes. If the end date is before the start date, the calculator shows a negative count so reversed ranges are obvious.
Use it as a transparent counting record only. Legal, payroll, tax, court, banking and contract rules can define holidays, endpoint inclusion, filing cutoffs and roll-forward rules differently.
Print the start date, end date, endpoint inclusion choices, weekday count, formula, holiday limitation and notes area so a project, invoice, payment-term or classroom record can be checked later.
Business-day counting is a practical layer on top of calendar-day counting. It answers a workplace question rather than a pure astronomy or date question: how many ordinary working dates are available between two calendar points?
A calendar day is a date on the calendar. A business day is a social and legal convention about when ordinary work, banking, delivery or administration usually happens. That is why the same date span can have one elapsed-day count and a different business-day count.
This calculator uses the common Monday-to-Friday pattern because it is widely used for office planning and payroll arithmetic. It does not claim that every country, religion, industry or employer follows the same weekly rest days.
Public holidays can vary by nation, state, city, employment agreement and year. The calculator now lets the user choose a 2026 source-backed preset, while still keeping the base weekday count visible so the holiday layer can be audited.
Version history, formula changes and data verification dates for this calculator
Added 2026 official-source public-holiday presets for AU national, US federal, UK England & Wales, and Canada CRA/federal calendars.
Edge case: Holiday subtraction only applies to included Monday-Friday dates; weekend holidays do not reduce the weekday count twice.
Initial Monday-Friday weekday counter with endpoint inclusion controls.