1. What is This Calculator?

This calculator determines the date that is 90 days from a given start date. It's useful for planning, deadlines, or any situation where you need to know a date three months in the future.

2. How Does the Calculator Work?

The calculator uses simple date arithmetic:

The calculation accounts for varying month lengths and leap years automatically through PHP's date functions.

3. Practical Applications

Details: Useful for medical prescriptions (90-day supplies), project deadlines, visa expiration dates, or any 3-month planning period.

4. Using the Calculator

Tips: Enter any valid date in YYYY-MM-DD format or use today's default date. The calculator will show the date exactly 90 days later.

5. Frequently Asked Questions (FAQ)

Q1: Does this account for leap years?
A: Yes, the calculation automatically adjusts for leap years and varying month lengths.

Q2: Can I calculate dates other than 90 days?
A: This calculator specifically calculates 90 days. For other durations, you would need a different calculator.

Q3: What's the maximum date range this can handle?
A: The calculator can handle dates within the range supported by PHP's date functions (typically 1970-2038 on 32-bit systems).

Q4: How precise is this calculation?
A: It's precise to the day, calculating exactly 90 calendar days from the input date.

Q5: Does this include weekends and holidays?
A: Yes, it counts all calendar days including weekends and holidays. For business-day calculations, a different calculator would be needed.