Champagne Calculator
Bottles, cases, and flutes for a toast, a sparkling cocktail hour, or a mimosa bar — with the cushion caterers build in for foam and refills.
For adults of legal drinking age only. This calculator estimates purchase quantities — it is not a drinking guide. Never serve alcohol to anyone under 21 (US) or to guests who are visibly intoxicated; hosts can be held legally responsible in many states. Offer a non-alcoholic sparkling option so every guest can join the toast, and plan safe rides home.
Count only guests taking a glass.
2 glasses the first hour, 1 per hour after.
Half sparkling, half juice — a bottle stretches to ~10 drinks.
You need
Enter guest count
| Details | Amount |
|---|---|
| Cases (12 bottles) | — |
| Pours available | — |
| Flutes to rent/buy | — |
| Orange juice | — |
Prosecco and cava run $10–$20; Champagne $40+.
How to Calculate Champagne
- A 750 ml bottle is ~25 oz — six 4 oz toast pours, or five 5 oz glasses.
- Toast: one pour per guest, plus ~10% for foam, spills, and second rounds.
- Reception: two glasses the first hour, one per hour after — the standard bar rule.
- Mimosas: half sparkling, half juice, so each bottle stretches to about 10 drinks.
Champagne formulas
Toast bottles = ceil(guests ÷ 6 × 1.1)
Reception bottles = ceil(guests × (hours + 1) ÷ 5)
Mimosa bottles = ceil(drinks ÷ 10)
Worked example — 100-guest toast: 100 ÷ 6 × 1.1 = 19 bottles, about 1.5 cases.
Bottles by Guest Count
Toast only — one 4 oz pour per guest from 750 ml bottles: Every row is the calculator above at its default settings.
| Guests | Bottles |
|---|---|
| 10 | 2 |
| 15 | 3 |
| 20 | 4 |
| 25 | 5 |
| 30 | 6 |
| 40 | 8 |
| 50 | 10 |
| 75 | 14 |
| 100 | 19 |
| 150 | 28 |
| 200 | 37 |
Tips Before You Buy
- Prosecco or cava for the crowd, Champagne for the head table — nobody identifies a 4 oz toast pour by region, and the savings are dramatic at scale.
- Chill 3 hours in the fridge, or 30 minutes in half ice + half water. Never freeze — pressurized bottles can burst.
- Pour in two passes. Fill each flute a third, let the foam fall, then top up — it doubles your effective yield versus one hurried pour.
- Count flutes at guests + 10%; rentals are cheap and breakage is real.
- Open bubbly can't be resealed well — buy in whole bottles you'll actually finish, and keep extras sealed for returns.
Frequently Asked Questions
Bottles for a 100-guest toast?
About 19 (100 ÷ 6 pours, plus a 10% cushion) — roughly 1.5 cases.
Glasses per bottle?
Six 4 oz toast pours or five 5 oz glasses from a 750 ml bottle.
How much for a reception?
Two glasses the first hour, one per hour after — about one bottle per three guests per hour.
How much for a mimosa bar?
Half-and-half with juice stretches a bottle to ~10 drinks; plan 2 per guest plus ~2 L juice per 3 bottles.
Champagne or prosecco?
Prosecco/cava is indistinguishable in a toast pour and far cheaper. Splurge only where it's sipped.
How long to chill?
3 hours in the fridge, or 30 minutes in half ice, half water. Never the freezer.
How many bottles of champagne do I need for 50 guests?
For a toast with 50 guests at one 4 oz pour each, you need about 10 bottles — 50 guests at 6 pours per bottle, 10% cushion included. If champagne is poured through a reception rather than for a single toast, plan closer to half a bottle per guest.
How many bottles of champagne do I need for 100 guests?
For a toast with 100 guests at one 4 oz pour each, you need about 19 bottles — 100 guests at 6 pours per bottle, 10% cushion included. If champagne is poured through a reception rather than for a single toast, plan closer to half a bottle per guest.
How many bottles of champagne do I need for 150 guests?
For a toast with 150 guests at one 4 oz pour each, you need about 28 bottles — 150 guests at 6 pours per bottle, 10% cushion included. If champagne is poured through a reception rather than for a single toast, plan closer to half a bottle per guest.
References
- NIAAA — standard drink sizes and pours: niaaa.nih.gov
- The Knot — toast and reception beverage conventions: theknot.com
- Total Wine — sparkling wine serving and chilling guides: totalwine.com
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