About Working Day Calculator

Count business days between two dates (excluding weekends). Part of the DevTools Surf developer suite. Browse more tools in the Date / Time collection.

Use Cases

• Estimating project delivery dates excluding weekends
• Calculating SLA deadlines in business days for support tickets
• Planning sprint schedules accounting for non-working days
• Computing payment due dates for net-30 business day terms

Tips

• Excludes weekends automatically from the day count
• Use this to calculate project delivery date estimates
• Count business days between milestones for SLA tracking

Fun Facts

• The five-day work week became standard in the U.S. after Henry Ford adopted it for Ford Motor Company in 1926.
• In 2022, Iceland completed the world's largest trial of a four-day work week with 2,500 workers and reported maintained or improved productivity.
• The concept of 'business days' varies globally: in many Middle Eastern countries, the work week runs Sunday through Thursday.

FAQ

What's a 'working day'?

Monday through Friday, excluding weekends. Toggle to include specific holidays (paste a list of dates).

US federal holidays?

Common preset — New Year's, MLK Day, Presidents Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus, Veterans, Thanksgiving, Christmas.

Half days?

Not directly — treat them as full business days or skip entirely. For precise half-day billing use a dedicated timesheet tool.

What about 6-day workweeks?

Toggle 'include Saturday'. Some industries (retail, manufacturing) have 6-day weeks; many don't. Match your organization's definition.