How many glasses of wine per bottle?

A standard 75cl bottle pours 5-6 glasses at 125ml (6 exactly, but with slight spillage 5 is safer to budget for), about 4 glasses at 175ml, or 3 glasses at 250ml. Most UK restaurants serve 175ml as a standard glass, but 125ml is the standard measure for party planning.

How much wine per person at a party?

Plan for about half a bottle per wine-drinking guest for a 3-4 hour party, or a full bottle for longer events. Not all guests will drink wine — typically 40-60% choose wine over beer or spirits.

What is the best red to white ratio?

A 50/50 split works well for most events. In summer, shift to 40% red and 60% white/rosé. In winter, go 60% red and 40% white. If you know your guests well, adjust to their preferences.

Should I serve rosé?

Rosé is increasingly popular in the UK, especially for summer events. Plan for about 20% of your wine to be rosé at warm-weather parties, less in winter.

PartyCalcs

Wine Calculator — Bottles Per Guest

Calculate how many bottles of wine you need for your party based on guest numbers, event length, and pour size.

Number of Guests

Event Duration

% Guests Drinking Wine

Pour Size

Price per Bottle (optional)

How We Calculate This

This calculator uses the standard catering formula for wine quantities.

The formula

Total glasses = wine drinkers x (2 + additional hours)

Bottles = total glasses / glasses per bottle

Glasses per bottle depends on pour size: 6 at 125ml, approximately 4 at 175ml, or 3 at 250ml. Bottles are split into red, white, and rosé at a 40/40/20 ratio by default.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Adjust quantities based on your guests and event type.