Tolinx · productivity
Date Difference Calculator
Calculate days between dates.
Measure days, weeks, and months between two dates for better planning.
Use this calculator to estimate schedules without opening spreadsheets. Enter a start and end date to see the total number of days, weeks (plus remaining days), and approximate months between them. Leap years and month length variations are handled automatically.
The results panel also shares milestone prompts, suggesting how you might break down the timeframe. It is useful when coordinating launches, documenting SLAs, or preparing campaign countdowns.
No input is stored, so you can run quick calculations during calls or workshops. Pair it with the Pomodoro timer to translate long timelines into daily focus blocks.
Change either date to refresh the result
Summary
Pick both dates to see the summary
How to use
Pick your start date, then the end date, and click “Calculate.” Results appear instantly. If the start date is later than the end date, a warning prompts you to switch them.
Adjust the dates as often as needed; the numbers refresh automatically. Clear the fields with the provided link to begin another estimate.
FAQ
Are leap years considered?
Yes. We base the math on the actual calendar day difference before displaying weeks and months.
Does time zone matter?
No. The calculator operates on dates, not times, so it stays consistent across regions.
Usage ideas
Launch planning
Check the number of days left before a product release or event.
Team alignment
Share week counts with stakeholders to negotiate workloads.
Sample input
Start March 1 and end April 15 to see 46 days, or 6 weeks and 4 days.