Date Calculator
Add days to a date, subtract days from a date, or calculate the number of days between two dates. This date calculator helps with schedules, deadlines, travel plans, billing periods, and everyday date math.
Result Date
August 1, 2026
30 days after the start date
Total Days
30
Weeks + Days
4 weeks, 2 days
General disclaimer: This tool provides general estimates for informational purposes only. Results may vary based on your specific situation.
📘 How it works
Choose whether you want to add days, subtract days, or calculate the number of days between two dates. The calculator uses calendar days and instantly shows the result date or date difference.
🧮 Formula
Result Date = Start Date ± Number of Days
Days Between = End Date − Start Date
🎯 When to use
- 📅 Add days to a project deadline
- ↩️ Subtract days from a target date
- 🧾 Calculate billing or subscription periods
- ✈️ Count days between travel dates
- 📊 Measure time between two calendar dates
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❓ FAQ
💡 What is a date calculator?
A date calculator is a tool that helps you add days to a date, subtract days from a date, or calculate the number of days between two dates.
📅 Can I add days to a date?
Yes. Select Add Days, choose a start date, enter the number of days, and the calculator will show the result date.
↩️ Can I subtract days from a date?
Yes. Select Subtract Days, enter a start date and number of days, and the calculator will show the earlier date.
🔢 How do I calculate days between two dates?
Select Days Between, enter a start date and end date, and the tool will calculate the total number of calendar days between them.
🗓️ Does this calculator exclude weekends or holidays?
No. This date calculator uses calendar days. It does not exclude weekends, federal holidays, or business holidays.
💰 Is this date calculator free?
Yes. This date calculator is free to use and does not require registration.
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