Subscription Weeks Calculator

For subscription, split elapsed calendar days into full weeks and remaining days from the values you enter.

How to use Subscription Weeks Calculator

1. Enter Start Date, End Date. 2. A week here is seven calendar days. The start-to-end difference excludes an extra inclusive day, and reversing the dates keeps the same duration. 3. Select Calculate or press Enter. 4. Select Copy result to copy the answer, or Reset to clear the form and result.

Why use this tool?

Use Subscription Weeks Calculator to split elapsed calendar days into full weeks and remaining days. A week here is seven calendar days. The start-to-end difference excludes an extra inclusive day, and reversing the dates keeps the same duration.

How the calculation works

Full weeks = floor(absolute calendar-day difference ÷ 7); the remainder is the days left over. A week here is seven calendar days. The start-to-end difference excludes an extra inclusive day, and reversing the dates keeps the same duration. Dates use the Gregorian calendar in years 0100–9999 and are independent of browser timezone offsets. Calendar days have no daylight-saving duration adjustment. Outputs outside this date range are rejected.

Example

Worked example: Start Date = "2026-10-12"; End Date = "2026-10-12". Result: 0 weeks.

Practical tip

Decide whether your subscription task needs elapsed days or inclusive dates; these are different counting conventions.