Business Days Calculator — Add Subtract Working Days
Count the number of working days (Monday–Friday) between two dates, with an option to exclude major US holidays.
How to use this calculator
👉 Fill in the boxes below and your answer appears instantly — no maths needed, we do it all for you! 🎉
In plain English — what does this do?
📊 A helper for daily life! Things like working out your age, how much to tip, what a sale price is, or how long until your birthday. Quick and easy answers for real life!
A business days calculator counts only weekdays (Monday through Friday) between two dates, skipping weekends. It's essential for estimating project delivery times, contract deadlines, payroll periods, and legal filing windows where calendar days and working days differ significantly.
Business days
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Total calendar days
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Weekends excluded
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What is Business Days Calculator — Add Subtract Working Days?
A business days calculator counts only weekdays (Monday through Friday) between two dates, skipping weekends. It's essential for estimating project delivery times, contract deadlines, payroll periods, and legal filing windows where calendar days and working days differ significantly.
How to use it
- 1️⃣ Enter a start date and an end date.
- 2️⃣ Optionally check 'Exclude US holidays' to skip 6 major federal holidays.
- 3️⃣ The result shows business days, total calendar days, and weekends in the range.
Formula
💡 See it in action — a real example
❓ Common questions
- Which holidays are excluded?
- New Year's Day (Jan 1), Martin Luther King Jr. Day (3rd Monday of Jan), Memorial Day (last Monday of May), Independence Day (Jul 4), Labor Day (1st Monday of Sep), Thanksgiving (4th Thursday of Nov), and Christmas (Dec 25).
- Are partial days counted?
- No. The start date is included and the end date is included if it falls on a weekday. Both are counted as full days.
- Does this handle leap years?
- Yes. The date loop uses JavaScript's Date object which natively handles leap years and DST transitions.