Calculate an engagement date from a proposal date, count the days between dates or since your engagement, or plan an engagement from a relationship start.

Whole units only. Changing the unit reinterprets the number.

Preferred weekday

Related Calculators

Engagement Date Formula

The following formula is used to calculate the engagement date for a given proposal date and a specified number of days after the proposal.

E = P + D

Variables:

  • E is the engagement date
  • P is the proposal date
  • D is the number of whole days after the proposal date (D = 0 means the same date)

To calculate the unshifted engagement date, add the number of whole calendar days (D) to the proposal date (P). D = 0 means the same day. An optional preferred weekday moves that target forward by 0–6 additional days. Reverse proposal mode subtracts the entered interval without a weekday shift. Elapsed-day mode excludes the starting date. The relationship planner adds the chosen calendar timeline, then the optional buffer and forward weekday shift; month/year additions clamp to the last valid day of the target month. These are user-chosen schedules, not relationship predictions.

What is an Engagement Date?

An engagement date is the date on which a couple officially agrees to get married (often the proposal/acceptance date). For many couples, the proposal date and engagement date are the same. In some situations, a proposal may be made on one date and the acceptance or an “official engagement” (such as a public announcement or engagement ceremony) may happen later; in that case, the engagement date can be later than the proposal date. In this calculator, the “engagement period (days)” is simply the number of whole days between the proposal date and the engagement date.

How to Calculate Engagement Date?

The following steps outline how to calculate the Engagement Date.

  1. First, determine the proposal date (P).
  2. Next, determine the number of days after the proposal date (D).
  3. Finally, calculate the engagement date using the formula E = P + D.
  4. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Proposal Date (P) = 2023-01-01

Engagement Period (D) = 30 days