Free Date Calculator - Calculate Days, Weeks, Months Between Dates

Calculate the difference between two dates in days, weeks, months, or years. Perfect for project planning, age calculations, contract duration, and event scheduling.

Date Difference Calculator

Find the exact number of days between two dates

Date Format:

Start Date

End Date

Calculation Options

Count Business Days Only

Calculate using only Monday through Friday

Saturday is a Business Day

Include Saturday as a business day

How to Use Our Date Calculator

Our free date calculator is simple to use. Just enter your start date and end date, choose your preferred date format (MM/DD/YYYY or DD/MM/YYYY), and select the calculation type (days, weeks, months, or years). The calculator will instantly show you the exact difference between the two dates.

Date Format Options

US Style (MM/DD/YYYY)

January 15, 2024 = 01/15/2024
March 8, 2024 = 03/08/2024
December 25, 2024 = 12/25/2024

European Style (DD/MM/YYYY)

15th January 2024 = 15/01/2024
8th March 2024 = 08/03/2024
25th December 2024 = 25/12/2024

Popular Date Calculations

Weeks from Date

Calculate how many weeks are between two dates. Perfect for project timelines and pregnancy tracking.

Date Counter

Count days, weeks, or months from a specific date. Useful for countdowns and deadlines.

Date Duration

Calculate the total duration between two dates in multiple formats.

Business Days

Calculate working days excluding weekends and holidays.

Age Calculator

Calculate exact age in years, months, and days from birth date.

Event Planning

Plan events by calculating time intervals and deadlines.

Important Notes

Business Days: The business days calculation excludes weekends by default, with an option to include Saturdays for different work schedules.

Holidays: Please note that this calculator doesn't automatically account for holidays. For accurate business day calculations that include holidays, you'll need to adjust your end date accordingly.

Time Zones: All calculations are based on UTC (Coordinated Universal Time) to ensure consistency across different regions.

Common Uses for Date Calculator

Project Planning: Calculate project timelines and deadlines
Contract Management: Determine contract duration and renewal dates
Age Calculations: Calculate exact age for legal documents
Event Planning: Plan events and calculate preparation time
Business Agreements: Calculate payment terms and due dates
Travel Planning: Calculate trip duration and booking deadlines
Academic Planning: Calculate semester lengths and assignment due dates
Financial Planning: Calculate investment periods and maturity dates

Why Choose Our Date Calculator?

Free & Easy to Use

No registration required. Simply enter your dates and get instant results.

Multiple Formats

Support for both US and European date formats to suit your preference.

Accurate Calculations

Precise calculations including leap years and different month lengths.

Business Day Support

Calculate working days excluding weekends for professional use.