How do I count days between two dates?

Select "Days Between" mode, enter your start and end dates, and the counter will instantly show the total days along with a detailed breakdown in weeks, months, hours, minutes, and seconds.

Can I count days from a past date to today?

Yes. Switch to "Days Since" mode and pick a past date. The counter will show the exact number of days elapsed and update in real time.

Does this tool account for leap years?

Yes. Our day counter uses precise date calculations that automatically account for leap years and varying month lengths.

Can I use this for countdowns to future events?

Yes. Use "Days Between" mode with today as the start date and your future event as the end date. You can also use quick presets like Christmas or New Year.

天數計數器

計算任意兩個日期之間的天數，或追蹤自某事件以來/距離某事件的天數。使用我們的免費線上天數計數器，精確計算天數、週數、月數和年數。

模式

開始日期

結束日期

快捷預設

總天數

週

月

年

小時

分鐘

秒

選擇日期開始計算

使用方式

選擇模式

選擇「兩個日期之間」或「已過天數」模式

設定日期

選擇開始和結束日期，或選擇一個過去的日期

檢視結果

即時檢視天數、週數、月數和年數

關於此工具

計算任意兩個日期之間的天數，或追蹤自某事件以來/距離某事件的天數。使用我們的免費線上天數計數器，精確計算天數、週數、月數和年數。

Use this free day counter to calculate the exact number of days between any two dates. Track anniversaries, count days since a special event, or find out how many days until your next milestone.

All data is stored locally in your browser and never uploaded to any server. No registration required.

Date Difference Calculation

Calculate the exact number of days between any two dates with automatic leap year handling.

Event Tracking

Use quick presets for common events like birthdays, anniversaries, Christmas, and New Year.

Multiple Time Units

Results are displayed in days, weeks, months, years, hours, minutes, and seconds for full context.

瞭解更多

Anniversary Tracking — Count the exact days since a wedding, relationship start, or any meaningful date to celebrate milestones.

Project Deadlines — Instantly see how many working days remain before a project due date or submission deadline.

Trip Planning — Calculate the days until your next vacation or travel date so you can prepare everything on time.