What is a date calculator?
A date calculator is a tool that lets you quickly calculate the time span between two chosen dates. The result is presented in days, weeks, months, and years, so you can precisely determine how much time has passed or remains until a specific date.
How to calculate the number of days between dates?
Enter the start and end dates in the calculator. The system will automatically calculate the difference between them and present the result in multiple formats: total number of days, number of weeks with remaining days, and a breakdown into years, months, and days.
What is the date difference formula?
The total number of days is calculated by subtracting the start date from the end date. Weeks are obtained by dividing the number of days by 7. The years, months, and days breakdown is calculated taking into account varying month lengths and leap year rules.
Date calculation examples
- From January 1, 2024 to December 31, 2024 — 365 days (52 weeks and 1 day)
- From March 1, 2024 to September 1, 2024 — 184 days (6 months)
- From June 15, 2023 to June 15, 2025 — 731 days (2 years)
When to use a date calculator?
A date calculator is useful in many situations: planning project deadlines, calculating the number of working days, determining pregnancy weeks, calculating insurance periods, planning trips, or simply finding out how many days remain until an important event.
How is a date calculator different from an age calculator?
An age calculator is designed to calculate a person's age from their birth date, while a date calculator is a universal tool for calculating any time span between two dates. The date calculator has no concept of birthdays or age — it simply shows the difference between two dates.