Date Calculator
Add or subtract days, weeks, months, or years from any date to find the resulting date.
Result Date
2026-01-26
Days from Start: 7
1
Start Date
2
Operation
3
Amount
4
Unit
2026-01-19 + 7 Days
2026-01-26
7
Days from Start
1
Weeks from Start
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Date Arithmetic
Date calculations are useful for planning events, tracking deadlines, and understanding time spans.
Adding 30 days is not the same as adding 1 month! Months have varying lengths (28-31 days).
Common Uses
- Project deadlines: "What date is 90 days from today?"
- Warranty expiration: "When does my 2-year warranty end?"
- Subscription renewal: "30 days from now"
- Travel planning: "What day of week is my trip?"
Time Unit Conversions
| Unit | Approximate Days |
|---|---|
| 1 Week | 7 days |
| 1 Month | 30-31 days |
| 1 Quarter | ~91 days |
| 1 Year | 365-366 days |
Leap Years
Leap years occur every 4 years (with some exceptions), adding February 29th:
- 2024, 2028, 2032 are leap years
- Century years must be divisible by 400
Business Days Note
This calculator counts calendar days. For business days (excluding weekends and holidays), you may need a specialized calculator.