A wedding invitation quantity calculator figures out exactly how many invitations to order — based on your guest list broken down by household type (couples, families, singles). Since invitations go per household, not per person, you typically need 50–60% as many invitations as guests. Enter your household counts below to get an itemized stationery order list.
Guest Households
Additional Stationery Items
Only used if rehearsal invites checked
Complete Stationery Order List
RSVP Timeline
Invitation Addressing Guide
How to Calculate Wedding Invitation Quantities
The most common mistake couples make when ordering wedding invitations is ordering one per guest instead of one per household. With 150 guests, you might only need 70–85 invitations — but ordering 150 wastes $200–$400 on unnecessary printing. A wedding invitation quantity calculator prevents this by breaking down your guest list by household type.
Step 1: Count by Household Type
Go through your guest list and categorize each group: married/partnered couples (one invitation each), families with children (one per family unit), single adults without plus-ones (one each), and singles with plus-ones (one addressed to both). If parents and adult children live in the same house, they're one household. If they have separate addresses, they're separate households.
Step 2: Add the Buffer
Always order 15–20% more invitations than your minimum count. This covers: addressing mistakes (expect to ruin 5–8 envelopes), keepsake copies (yourselves, your parents, potentially the wedding planner), late additions to the guest list, and invitations lost in the mail. The cost difference between ordering 80 vs. 95 invitations is usually $30–$60 — far cheaper than a rush reprint.
Step 3: Plan Your Full Stationery Order
Beyond invitations, your stationery order typically includes: save-the-dates (same quantity as invitations, sent 6–12 months out), RSVP cards (same quantity as invitations — one per household, not per person), outer envelopes (same quantity), inner envelopes (if using traditional suite format), thank you cards (one per household or couple, sent within 3 months of wedding).
Stamps: Don't Forget Return Postage
A complete wedding invitation suite (invitation, RSVP card, inner/outer envelopes, extras) often weighs 2–3 oz and requires two or three stamps on the outer envelope. RSVP envelopes also need return stamps — your guests should never need to supply postage to RSVP to your wedding. Take a fully assembled invitation to the post office and have them weigh it before buying stamps in bulk. Unusual shapes (square, oversized) may need custom postage.
RSVP Timeline Guidelines
Send save-the-dates 6–8 months before the wedding (10–12 months for destination). Send invitations 8–12 weeks before. Set the RSVP deadline 3–4 weeks before the wedding — your caterer needs a minimum headcount at least 2 weeks out. Follow up by phone or text with non-responders 1 week after the deadline. Don't rely solely on the RSVP card — call close family and friends directly.
FAQ
Is this wedding invitation calculator free?
Yes, completely free with no signup required. All calculations run locally in your browser.
How many invitations do I need if inviting 150 guests?
With 150 guests, you'll typically send 70–85 invitations. Couples share one invitation, families receive one invitation per household, and single adults each receive one. Add 15% buffer (about 10–13 extra) for mistakes, keepsakes, and postal errors — so plan for 80–100 total invitations to be safe.
Why do I need fewer invitations than guests?
Invitations are sent per household, not per person. A married couple receives one invitation, not two. A family of four (parents + two adult children living at home) might get one invitation if they all live together, or two if the adult children have separate addresses. One-per-household is the rule — this is why invitation counts are typically 50–60% of your total guest count.
How many extra invitations should I order?
Order 15–20% more than your calculated minimum. This covers: mistakes during addressing or assembly, keepsake copies for yourselves and parents, invitations lost in the mail, and late additions to the guest list. Reprinting a small batch later is expensive — ordering extras upfront is almost always cheaper.
When should I send wedding invitations?
Send invitations 8–12 weeks before the wedding date for local or regional weddings. For destination weddings, send 3–4 months in advance. Set your RSVP deadline 3–4 weeks before the wedding so your caterer has time to set final headcount. Follow up by phone or text with non-responders 1 week after the RSVP deadline.
How many stamps do wedding invitations need?
A typical wedding invitation suite (invitation, RSVP card, inner envelope, outer envelope) weighs 2–3 oz and requires extra postage. As of 2026, standard US postage is $0.73 for the first ounce and $0.24 for each additional ounce. Invitation suites often need $1.21+ in stamps. RSVP return envelopes also need stamps. Take a completed suite to the post office to weigh it before buying stamps in bulk.