Days Between Dates Calculator

Count the exact number of days, weeks, or months between any two dates — or find a future/past date by adding or subtracting days.

Start Date

End Date

Exclude weekends (count business days only)

Starting Date

Days to Add (negative to subtract)

Skip weekends (business days only)

Common Uses for a Date Calculator

Our date calculator handles dozens of everyday use cases quickly and accurately, all while accounting for leap years.

Deadlines: "How many days until my tax filing deadline?" or "When is 90 days from today?"
Contracts: Calculate 30/60/90-day contract terms or notice periods
Court dates: Count business days for legal deadlines (statute of limitations, filing windows)
Pregnancy: Count weeks and days of pregnancy from LMP date
Project planning: Find how many working days until a project deadline
Age milestones: "How many days until I turn 65?" (Medicare eligibility)
Warranties: Is a 90-day warranty still valid? Find the exact expiration