Postage Calculator

Stop manually weighing invitation suites, checking USPS charts, and second-guessing postage costs for every client project. Use the exact calculator my team and I rely on to estimate suite weights, calculate postage rates, and simplify luxury invitation mailing.

What’s inside:

Postage Weight Calculator
A calculator built specifically for stationers to quickly estimate invitation suite weights and mailing costs for luxury stationery projects. Plug in your quantities, materials, and embellishments, and let the calculator handle the math for you.

Domestic + International Mailing Categories
Includes estimated USPS mailing categories for:

• Domestic Machinable
• Domestic NON–Machinable
• International Machinable
• International NON–Machinable
• Canada-specific pricing
• Flat + oversized envelope estimates

Built for Embellished Invitation Suites
Designed with real luxury stationery workflows in mind, including layered cards, ribbon, vellum, wax seals, belly bands, and dimensional embellishments that impact mailing weight and postage rates.

Automatic Postage Estimates
The calculator automatically totals your suite weight and estimates postage rates based on your selected mailing category and current USPS pricing tiers.

Google Sheets + Excel Versions
Access the calculator in both Google Sheets and Excel depending on your preferred workflow. The Google Sheets version includes a “make a copy” template link so you can easily save your own editable version.

Protected Formulas + Editable Input Fields
The calculator was designed to simplify your workflow while protecting the built-in formulas and calculations. Simply update the highlighted input cells with your project details and the spreadsheet handles the calculations for you.

Whether you’re newer to luxury stationery or already mailing embellished invitation suites regularly, this calculator helps eliminate postage guesswork, manual calculations, and mailing stress—so you can spend less time doing USPS math and more time creating.