Days Between Dates Calculator
Enter a start and end date to see exactly how many days and weeks lie between them — useful for a deadline, contract duration or countdown date.
結果
フィールドに入力して結果を確認してください。
公式
Days = end date − start date
The calculator counts the number of whole calendar days between the two dates, regardless of your device’s timezone settings, by comparing both dates as local calendar dates.
計算例
1 January 2026 to 31 December 2026
→ 364 days.
よくある間違い
- Counting the start date itself as a full day, making the count 1 too high.
活用シーン
- Calculating the duration of a contract or rental period.
よくある質問
Does the calculator count both the start and end date?
The result is the difference between the dates; add 1 yourself if you want to count both dates inclusively.
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