Add / Subtract Days to Date
Add or subtract days, weeks, or months from any date. Find what date it will be in X days.
📐 How We Calculate This
Unit conversions use exact mathematical ratios defined by the International Bureau of Weights and Measures (BIPM). Currency conversions reference mid-market exchange rates updated daily from the European Central Bank and Federal Reserve.
Currency rates fluctuate throughout the day. The rates shown are indicative — actual exchange rates at your bank or transfer service will differ due to spreads and fees.
📚 Sources & References
Frequently Asked Questions
What date is 90 days from today?
Enter today's date and 90 in the days field. The calculator will show you the exact date, day of week, and more.
Can I subtract days?
Yes! Enter a negative number (e.g., -30) to find a date in the past.
How do I calculate business days?
This calculator counts calendar days. For business days, multiply your desired business days by 7/5 (e.g., 20 business days ≈ 28 calendar days).