Calculate working days between dates with custom holidays. Exclude weekends and holidays. SLA, contract, and project planning. 100% local.
This tool runs 100% in your browser. All computation happens locally on your device — your input is never uploaded to any server. Results are for reference only.
A business day is any day your team actually works: Monday through Friday, minus any holidays that fall on a weekday. The count is a simple subtraction — total calendar days, then take out every Saturday and Sunday, then take out the holidays that landed on a weekday. Two details trip people up. First, a holiday that falls on a weekend (like July 4, 2026, a Saturday) costs no working day on its own, but an observed weekday off (July 3, 2026) does. Second, the same holiday list can't be reused across companies, which is why this tool lets you add custom holidays alongside the US federal calendar.
Each workday cell below is counted; Saturday and Sunday are always excluded, and a weekday holiday (shown in amber) is excluded too. For the range Jan 1 – Mar 31, 2026: 90 total days − 26 weekend days − 3 weekday holidays (Jan 1, Jan 19, Feb 16) = 61 business days — the stacked bar shows the split.
A marketing agency is quoting a delivery deadline from January 1 to March 31, 2026, and needs the number of working days the team actually has, counting US federal holidays.
Calculate business days between two dates. Everything runs locally; nothing is uploaded.
FreeToolHub Business Day Calculator is a free browser-based tool — calculate business days between two dates. No signup, no upload; everything runs locally in your browser.
Calcula días laborables entre dos fechas. Excluye fines de semana y festivos personalizados. Festivos federales de EE. UU. incluidos. Para SLA, contratos y planificación de proyectos. 100% en el navegador.
La calculadora de días hábiles es una herramienta gratuita que calcula el número de días de trabajo entre dos fechas. A diferencia de las calculadoras de fechas sencillas que solo cuentan días de calendario, esta te permite definir qué exclusiones son holidays que quieres quitar. Viene precargada con los días festivos federales de EE. UU. para 2025 y 2026, y permite añadir días festivos propios de tu empresa, región o proyecto. Cuenta por separado los días hábiles, los fines de semana y los festivos, dándote una imagen completa.
Yes. Enter custom holidays in the text area, one per line. Format: YYYY-MM-DD for just the date, or YYYY-MM-DD,Holiday Name to include a name. You can also uncheck US federal holidays if you only want your custom holidays.
Yes. Simply uncheck the US federal holidays option and enter your own country holidays in the custom holidays field. The tool is timezone-agnostic — it works with any date range.
The count walks every calendar day in the range and subtracts what your team does not work: each Saturday and Sunday is excluded, then every holiday that lands on a weekday is excluded too. Both the start and end date are counted inclusively. For example, Jan 1 to Mar 31, 2026 has 90 calendar days, 26 weekend days, and 3 weekday holidays, leaving 61 business days.
A holiday that lands on Saturday or Sunday costs no working day by itself — the day was already excluded as a weekend. Only an observed weekday off (like July 3, 2026, the Friday before a Saturday July 4) removes a real workday from the count. The results panel lists every holiday hit and labels weekend falls explicitly.
Yes. In the custom holidays box, enter one holiday per line as YYYY-MM-DD or YYYY-MM-DD,Name (for example 2026-03-15,Company off). Custom dates stack on top of the included US federal calendar for 2025-2026, and you can untick the federal list entirely to count against only your own calendar.
It matches the standard convention most SLAs use — calendar days minus weekends minus agreed holidays — but contracts vary: some count in calendar days regardless, some exclude only the buyer's holiday calendar. Check your contract's definition, then reproduce it exactly with the holiday settings here before relying on the number.
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