Day Counter
Pick a starting date and a target date to see the number of days between them, along with handy week and year equivalents.
Start date
Saturday, January 10, 2026
Target date
Saturday, January 10, 2026
You selected the same day—no days apart.
≈ 0.00 week(s)
≈ 0.00 month(s)
≈ 0.00 year(s)
How to Use This Calculator
Pick a starting point
Use today as the default or select any historic date—anniversaries, project kickoffs, or last payday.
Select your target date
Choose an upcoming goal, deadline, or event to count toward, or a past event to see how long it has been.
Review the breakdown
See total days, plus approximate weeks, months, and years to better contextualize the time span.
Formula
Days Difference = floor((Target − Start) ÷ 86,400,000)
Weeks ≈ Days ÷ 7
Months ≈ Days ÷ 30.4375
Years ≈ Days ÷ 365.2425
Example: Counting from 2025-11-09 to 2026-01-01 → 53 days remaining • ≈ 1.74 months.
Planning Ideas
Use the day counter to keep tabs on contract renewals, goals, vacations, or health milestones. Knowing exact days helps with pacing and accountability.
- Set a fitness challenge end date and track how many days remain.
- Figure out how long it has been since a key compliance filing.
- Calculate the time between product launches for marketing cadences.
- Count days left in the quarter to motivate project completion.
Frequently Asked Questions
Are start and target dates inclusive?
The calculator measures the difference in whole days. The summary tells you how many days have passed or remain; the current day is not double-counted.
Does it account for time zones?
Dates are treated in local time. For international countdowns, ensure both parties agree on the same calendar date.
Can I include partial days?
This tool focuses on full days. For hour-level precision, pair it with the Time Difference Calculator.
What about business days?
For a business-day view, use the Date Calculator in “Count Days” mode—it breaks down weekdays versus weekends automatically.