Keg Sizes Explained: 5L, 20L, 30L or 50L — Which Barrel for Your Party?
Keg Sizes Explained: 5L, 20L, 30L or 50L — Which Barrel for Your Party?
5, 20, 30 or 50 litres — beer kegs in Spain come in more sizes than most people expect, and picking the wrong one is either a sad, early-empty barrel or a lot of flat leftover beer. Here’s the practical guide we give our customers in Mallorca.
The four common keg sizes
| Size | Glasses (0.25L) | Needs a tap system? | Best for |
|---|---|---|---|
| 5L party keg | ~20 | No — built-in tap | BBQ, small dinner, fridge-friendly |
| 20L keg | ~80 | Yes | Birthday at the finca, ~20 guests |
| 30L keg | ~120 | Yes | The classic party size — best price per litre |
| 50L keg | ~200 | Yes | Weddings, big events — heavy (~60 kg full!) |
Which one should you pick?
- Under 10 guests: stick to 5L party kegs or bottles and cans — no equipment needed.
- 20–40 guests: one or two 30L kegs plus a rented tap system is the sweet spot. One tap line pours one beer variety — for two varieties you need a 2-line system.
- 50+ guests: combine 30L/50L kegs — and remember a full 50L keg weighs around 60 kg. Ours arrive on a hand truck, carried by someone who does this every day.
Keep it cold — the Mallorca factor
A keg standing in the August sun is undrinkable within the hour. The rental tap systems we deliver use dry cooling — the beer is chilled on its way through the line (up to 55 litres per hour), so the keg itself doesn’t need a fridge. Keep it in the shade, and you’re fine.
What it costs
Kegs are priced per barrel plus a refundable deposit — see the current selection of Spanish and German kegs. A tap system with cooling and CO₂ rents from 121 €: everything on our beer tap & keg rental page, including FAQ and glass rental.
Planning quantities for a whole evening? Use our finca party drink planner.
