No sign-up. No upsell. Just a calculator that tells you exactly how much alcohol to buy for your wedding and what it is going to cost.
Most wedding alcohol calculators online are either attached to a vendor trying to sell you something, or they produce a single vague number with no explanation of how they got there. Neither is useful when you are standing in a Costco trying to figure out how many cases of wine to put in your cart.
This calculator was built to do one thing well: give you a complete, itemised shopping list based on how your specific wedding is set up. Guest count, reception length, crowd type, season, bar type. Put those in and you get exact bottle counts by category with 2026 retail costs attached.
The formula is the same one used by professional bartenders and event planners across the US. One drink per guest per hour, adjusted for the variables that actually change consumption, with a 10% buffer built in because running out of wine at hour four is not a story anyone wants to tell.
The calculation is transparent. Here is exactly what happens when you hit calculate.
Start with guests multiplied by hours. If you have a cocktail hour, the first hour is counted at 1.5x because consumption is heavier before people sit down to eat. The rest of the reception runs at 1.0x per hour.
A light crowd multiplier reduces the total. A heavy crowd increases it. If a significant portion of your guest list does not drink, a second multiplier brings the total down accordingly. These are applied before the buffer.
Summer receptions go through more white wine and beer. Fall and winter receptions shift toward red wine and spirits. The seasonal split is applied to the total drink count before it is divided into categories.
Full open bar: roughly 50% wine, 30% spirits, 20% beer. Beer and wine only: 60% wine, 40% beer. These splits reflect real consumption data from US weddings, not guesses.
The total is multiplied by 1.10 before conversion. Wine servings are divided by 5 per bottle. Beer stays as units. Spirits are divided by approximately 17 standard pours per 750ml bottle. Costs use 2026 US retail averages.
The formula is explained in full on the homepage and on this page. You should know exactly how your shopping list was generated. If the numbers look off for your situation, you understand why and can adjust manually.
This tool has no commercial relationship with any liquor store, caterer, or alcohol brand. The store suggestions in the buying guides are based on return policies, bulk pricing, and availability, not sponsorship.
Retail alcohol prices shift. We update our cost figures at the start of each year based on current US retail averages from major national chains. The numbers you see reflect 2026 pricing, not figures from three years ago.
The cost comparison in the calculator is there specifically so you can see what buying retail saves compared to going through a venue or caterer. That comparison is not neutral. It is there because buying your own alcohol almost always costs less, and we think you should know that before you sign anything.
This calculator gives you a well-researched estimate based on the standard bartending formula used across the US event industry. It is not a guarantee. Real weddings vary. A crowd that skews older tends to drink less. An open bar at an evening reception after a long ceremony tends to run heavier in the first hour. Guests who drove themselves drink less than guests staying at the hotel.
The 10% buffer exists to absorb those variables. And because most major retailers accept returns on unopened product, buying slightly more than the estimate is the right call every time. Confirm the return policy before you buy, keep your receipts, and do not refrigerate bottles you might return.
If your situation is unusual, use the calculator as a starting point and adjust the crowd multiplier up or down based on what you know about your guest list.