Why Calculate Days Between Dates?
In the USA, knowing the exact number of days between dates is critical for legal contracts, lease agreements, visa validity periods, insurance claims, payroll calculation, and project management deadlines. Our tool gives instant results for any date range.
Common US Date Calculation Use Cases
- Visa validity: Calculate how many days remain before a B1/B2 visa expires
- Lease agreements: Find exact days in a rental period for prorated rent
- Tax deadlines: Days remaining until April 15 IRS deadline
- Employment contracts: Calculate probation periods (typically 90 days)
- Insurance claims: Days since incident for claim filing deadlines
- Pregnancy: Days from LMP to due date (typically 280 days)
US Federal Holidays to Account For
This calculator shows calendar days. If you need business days, remember to subtract weekends and US federal holidays including New Year's Day, Martin Luther King Jr. Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas.
Frequently Asked Questions
How many days is 3 months in the USA?
Three calendar months is approximately 90–92 days, depending on which months are involved. The tool gives the exact count based on specific dates.
How do I calculate business days between dates?
Subtract the number of weekend days and federal holidays from the total calendar days shown. Roughly multiply total days by 5/7 for a quick estimate.
How many days until April 15 (tax deadline)?
Enter today's date as the start date and April 15 of the relevant year as the end date to find the exact countdown.
What is the difference between calendar days and business days?
Calendar days count every day including weekends and holidays. Business days only count Monday through Friday, excluding federal holidays.
Can I calculate days for a visa stay in the USA?
Yes. Enter your visa entry date as the start and your planned exit date as the end. The tool shows total days to ensure you don't exceed the I-94 authorized period.