Wedding invitation timeline calculator

Working the timeline backwards

Every wedding timeline is arithmetic run backwards. You have one fixed date, and four decisions hang off it: when the save the date goes out, when the invitations go out, when you stop accepting replies, and when your caterer gets a number. Work forwards from today and you are guessing. Work backwards from the wedding and each date falls out of the one below it. That is all this calculator does: give it the wedding date, get the four windows in order.

The windows are ranges on purpose. Six to eight weeks for the invitation is not vagueness; it is the difference between a local Saturday where half the guests live twenty minutes away and a holiday weekend where everyone is competing for the same flights. Push to the early end of every window when a lot of guests travel, when the date falls on a public holiday, or when the list has families who need to arrange childcare. Pull to the late end when the wedding is local, the list is small and everyone has had a save the date for months. Both ends of a range are correct; the middle is not more correct than either.

Tick the destination box and every window widens, because your guests are buying flights rather than a card for the gift table. The save the date moves from six-to-nine months out to nine-to-twelve. The invitation stops being a window at all and becomes a single date, about twelve weeks before, so that flights and leave are booked against details that are already final. The reply deadline moves back to six to eight weeks, and the caterer’s headcount to two or three. The same setting is worth ticking for a local wedding where a third of the list is flying in for the weekend.

Two of the four rows are convention. The reply deadline and the caterer’s headcount are not. Your caterer or venue coordinator decides when final numbers are due — most want them one to two weeks before the day — and the RSVP date sits one to two weeks in front of that. The calculator shows where that usually lands, three to four weeks before a local wedding. Once you have the venue’s real date in writing, take its lead time to the RSVP deadline calculator: it asks how many days before the wedding your venue wants the numbers — seven, fourteen, twenty-one or twenty-eight — and returns the reply-by and reminder dates for chasing the guests who have gone quiet. Take those two from it, not its send date, which is fixed at ten weeks out — the cautious end of the window above. For the reasoning behind each window, the guide to when to send wedding invitations covers the US and UK conventions in full.

The badge on each row tells you where you stand today: opens in so many weeks, opens this week, open now, or window has passed. A passed window is not a disaster, it is a favour you are asking — send as soon as you can, say plainly that the notice is short, and phone the people whose absence would change the day. If you are skipping save the dates entirely, move the invitation earlier than the local window shown: about three months, and ten to twelve weeks at the very shortest, because the invitation is now the first your guests have heard of the date. When the dates look right, copy the timeline out and write the reply-by date into the invitation itself, where nobody can miss it.