About This Tool

Wedding stationery is one of those budget items that can catch couples off guard. Between save-the-dates, formal invitations, and thank-you cards, the combination of printing costs and postage adds up faster than most people expect. Our free Invitation Calculator helps you plan accurately by converting your guest count into household-based quantities and calculating the total postage cost for each mailing. The calculator uses the standard wedding planning assumption that there are approximately 2.5 guests per household on average. This accounts for the mix of couples, families, and single guests on a typical wedding invitation list. By calculating at the household level rather than the individual guest level, you get an accurate count of how many physical invitations to order, which is the number that matters when placing your stationery order with a printer or online vendor. For each type of mailing you select, the tool calculates the number of pieces needed and the corresponding postage cost. Save-the-dates and thank-you cards use the standard first-class postage rate, while formal wedding invitations include an additional surcharge because they typically weigh more than one ounce due to enclosure cards, reply cards, and envelope liners. The results display a clear breakdown showing your total household count, the number of individual mail pieces across all selected categories, and the combined postage expense. This information is essential for budgeting, timing your orders, and coordinating with your stationer. Most wedding planners recommend ordering 10-15 extra invitations beyond your calculated need for keepsakes, last-minute additions, and addressing mistakes. Combine this tool with the Guest List Manager for complete RSVP tracking and the Wedding Budget Calculator to see how stationery fits into your overall wedding spending plan.

Key Features

Automatic household count calculation based on the industry-standard 2.5 guests per household ratio
Separate postage calculations for save-the-dates, invitations, and thank-you cards with weight-based surcharges
Toggle individual mailing categories on or off to see costs for only the stationery you plan to send
Total piece count and combined postage cost summary for easy budgeting and vendor communication
Customizable postage rate input to reflect current USPS pricing or international mailing costs

Frequently Asked Questions

How many wedding invitations should I order?

Order enough invitations to cover your household count plus 10-15 extras. The extra invitations serve as replacements for addressing mistakes, keepsakes for yourself and family members, and last-minute additions to the guest list. For a wedding with 150 guests and approximately 60 households, ordering 70-75 complete invitation suites is a safe number. Many stationers offer quantity discounts, so ordering slightly more often costs very little extra.

How much does it cost to mail wedding invitations?

Standard wedding invitations typically require more than first-class postage because they exceed one ounce when assembled with reply cards, enclosure cards, and envelope liners. As of 2024, a standard forever stamp costs $0.73, and most wedding invitations need an additional $0.20 surcharge for the extra weight, bringing the cost to approximately $0.93 per invitation. Square or oversized invitations may incur a non-machinable surcharge of $0.40. Always weigh a fully assembled invitation at the post office before purchasing stamps.

When should I send save-the-dates and invitations?

Save-the-dates should be mailed 6 to 8 months before the wedding, or up to 12 months in advance for destination weddings. Formal invitations should be sent 6 to 8 weeks before the wedding, with an RSVP deadline set 3 to 4 weeks before the event. This timeline gives guests adequate notice to plan travel and accommodations while providing you with enough response time to finalize catering counts and seating arrangements.

Invitation Calculator - Wedding Stationery & Postage Estimator