Productivity · Free tool
Deadline Calculator
Add business days or working hours to a start date and get the actual deadline — holidays excluded.
Updated June 2026
Deadline date
June 15, 2026
Day of week
Monday
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What it does
Add business days or working hours to a start date and get the real-world deadline — weekends and US federal holidays excluded. Useful for project timelines, SLA calculations, and contract deadlines that say "within 10 business days".
Pair with date difference calculator, time duration calculator, countdown timer, and public holidays.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/deadline-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="Deadline Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Pick the start date.
- Enter business days or working hours to add.
- Optionally include US federal holidays.
- Read the resulting deadline.
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