Drinks Party Budget Calculator
Plan drinks, soft drinks, ice, snacks and service costs for a UK party. Estimate bottle counts, units, per-guest spend and a sensible buffer without turning the page into a drinking target.
Guest and Menu Inputs
Estimated Party Budget
This budget includes alcohol, soft drinks, snacks, supplies and a buffer. Serve water and alcohol-free options throughout.
This result is a shopping plan, not a drinking target. It links bottle counts, soft-drink cover, service supplies and a buffer so you can reduce alcohol while keeping the event well stocked.
Budget the Whole Drinks Table
How to Use the Calculator
Start with the number of guests and the percentage likely to drink alcohol. Do not set this to 100% unless every adult guest has said they will drink. Keep alcohol-free choices visible and well stocked. Next, enter the party length and a planning rate in drinks per drinker per hour. This is a shopping estimate, not a recommended intake. For many events, one drink per hour is already a generous planning point when food, soft drinks and travel home are considered.
Set the wine and beer shares. The remaining share is treated as spirits with mixers. If your party is a dinner, wine may dominate. If it is a barbecue or sports viewing event, beer and cider may be higher. If you do not want spirits, set wine and beer shares to total 100%. The calculator rounds up because bottles and cans cannot be bought in fractions.
Add soft drinks, ice, snacks and supplies per guest. This line should cover more than a single bottle of lemonade. Think about still water, sparkling water, cola, juice, tonic, alcohol-free choices, ice, limes, crisps, nuts, napkins and bins. Add a buffer for spills, last-minute guests and price changes.
Formula and Method
drinkers = guests x alcohol-drinking percentage
alcoholic servings = drinkers x party hours x drinks per drinker per hour
wine servings = alcoholic servings x wine share
wine bottles = ceiling(wine servings / 6)
beer or cider units to buy = ceiling(alcoholic servings x beer share)
spirits bottles = ceiling(spirit servings x 25 ml / 700 ml)
total budget = alcohol cost + soft drinks and snacks + glass hire and supplies + buffer
The wine calculation assumes six 125 ml glasses per 750 ml bottle. Beer and cider are treated as one bottle or can per serving. Spirits are based on 25 ml measures from a 700 ml bottle. Change prices if your bottles, cans or measures differ.
Shopping List Guide
| Item | Planning rule | Why it helps | Safety note |
|---|---|---|---|
| Wine | Six 125 ml glasses per 750 ml bottle. | Easy to round up by bottle and split red, white, rose or sparkling. | Offer smaller glasses and water on the table. |
| Beer and cider | One bottle or can per serving. | Good for simple shopping and fridge planning. | Include low-alcohol and alcohol-free options. |
| Spirits | About 28 single 25 ml measures per 700 ml bottle. | Helps avoid buying too many bottles for a mixed-drinks table. | Measure pours rather than free-pouring. |
| Soft drinks and water | Budget per guest, not just per non-drinker. | Everyone may want water, mixers or alcohol-free choices. | Keep water visible from the start. |
| Snacks and savoury food | Budget per guest or by platter. | Food slows drinking pace and makes the event more comfortable. | Check allergies and keep salty snacks balanced with water. |
Responsible Hosting Notes
- Plan transport: Share taxi, train, bus, lift or hotel options before the event. Do not let guests drive after drinking.
- Serve food early: Do not wait until late evening to bring out substantial food.
- Make alcohol-free drinks attractive: Put them in the same area as alcohol, chilled and ready to pour.
- Know the legal position: Do not serve alcohol to children. Follow venue, licence and age-check rules where relevant.
- Watch high-strength drinks: Strong beers, large wine glasses and free-poured spirits can raise units quickly.
Worked Example
A party has 30 guests. The host expects 70% to drink alcohol, so there are 21 drinkers. Across four hours at one drink per hour, the plan allows 84 alcoholic servings. If 45% are wine, the calculator plans 38 wine glasses, or 7 bottles before the buffer. If 40% are beer or cider, it plans 34 bottles or cans. The remaining servings become spirits, which rounds up to whole bottles.
The host adds £4.50 per guest for soft drinks, ice, garnish and snacks, plus £45 for supplies. A 12% buffer covers spills, extra guests and price changes. The result is a practical shopping budget that still leaves room to reduce alcohol, increase food or add more alcohol-free choices.
FAQ
Does this recommend how much people should drink?
No. It is a buying and budget tool. NHS low-risk guidance says adults are advised not to drink more than 14 units a week on a regular basis.
How much soft drink should I buy?
Budget for every guest, not only non-drinkers. Water, mixers and alcohol-free drinks should be easy to access throughout.
Can I use this for a paid bar?
Yes for estimating stock, but licensing, staff, age checks and venue rules need separate planning.
Should I buy spirits for every party?
No. If spirits do not fit the event, set wine and beer shares to total 100% and put more budget into alcohol-free drinks, food or service supplies.
Why does the calculator round bottles up?
Shops sell whole bottles and cans. Rounding up also covers spills, breakages, guest mix changes and stock that can be kept unopened.
Sources
- NHS (2025) ‘Calculating alcohol units‘. National Health Service.
- NHS (2025) ‘The risks of drinking too much‘. National Health Service.
- Drinkaware (2026) ‘Alcohol unit calculator‘. Drinkaware.