Festival Survival Calculator: Never Run Out of Beer Again

How Much Beer, Water, and Toilet Paper for a Festival?

For a normal 3-day European festival with 4 people, pack around 60 cans of beer (0.5L Tetra Pak or aluminum — glass is banned at almost every big festival, from Wacken Open Air to Glastonbury), 50 to 60 liters of water, 4 to 5 rolls of toilet paper, around 1.2 liters of sunscreen, and at least 60,000 mAh of shared powerbank capacity. The calculator above adjusts these numbers for your group size, days, and whether it's a chill jazz weekend or three days of techno with no sleep.

The numbers come from years of building packing lists for Hurricane, Fusion, MELT!, and a few brutal Wacken weekends. Including the 2018 heatwave, when crews who packed for "normal" summer ran dry by Saturday afternoon.

What Crews Actually Run Out Of (and When)

Festival shortages happen in a pattern you can predict. Water and powerbanks die first because most people pack too little. Toilet paper runs out around day two when the porta-loos stop getting refilled. Sunscreen lasts longer than it should — and that's exactly why everyone is sunburned by Sunday. Most groups apply way too little.

Water: The Most Underestimated Supply

The WHO baseline of 2L of drinking water per day is for people sitting in an office. A festival is the opposite: dancing, sun, dehydration from alcohol, bad sleep. Real consumption at European summer festivals is 3 to 5L per person per day. In real heat (Fusion, Sziget) it's 5 to 7L. The CDC extreme heat guide confirms the same thing: when you move and sweat, you need two to three times the seated baseline.

The container matters more than people think. 1.5L plastic bottles are what most first-timers bring. They're heavy and make a binbag of waste by Saturday. Most festivals (including Hurricane and Wacken) have free drinking water stations to refill at. A Reliance Aqua-Tainer 20L jerrycan weighs only 1.4kg empty, folds flat, and replaces about 14 plastic bottles per fill.

One rule we learned the hard way at Fusion 2019: take turns carrying the jerrycan. Whoever carries it on day one will resent the crew by day three. Just rotate.

Beer: How Much, How Cold, and the Glass Ban

Every major German festival bans glass. Hurricane, Southside, Wacken, MELT!, Splash! — all of them. What works: aluminum cans and Tetra Pak. German breweries like Beck's, Krombacher and Becks Gold sell Tetra Pak versions specifically for the festival market. Even so, most crews still buy too much: 5 cans per person per day fits a normal music festival. 3.5 for a chill folk weekend. 7.5 for a no-sleep techno marathon. Anything more, you're hauling home or paying for the binbag.

Temperature is the silent killer. By 11am, beer inside your tent hits 30°C and the taste is gone. What works: a 28L hardside cooler (Coleman Performer 28 or Igloo MaxCold) with two big ice blocks you rotate every day. Block ice from a camping shop lasts about 36 hours. Bagged crushed ice from a supermarket lasts only 8.

Many festivals sell ice on-site (Wacken, MELT!). But it usually runs out by mid-morning. Bring your own.

Toilet Paper: Why "One Roll Each" Isn't Enough

The porta-loos at big festivals don't get refilled often. By day two, there's no paper left. The math: the CDC hygiene guidelines assume 6 toilet trips per day at 8 sheets each. Festival stomach (different food, alcohol, stress) adds about 30%. A 200-sheet roll covers two person-days of normal use — less at a festival.

Two rules that save groups every year:

• Keep the roll waterproof. A wet roll is a dead roll. A freezer bag is fine. Better is a small Ortlieb dry bag. After one muddy Hurricane weekend, you'll never pack it loose again.
• Carry a small "go-bag." A ziplock with 10 folded sheets, a pack of wet wipes, and hand sanitizer. The full roll stays in the tent.

Sunscreen: Why Almost Everyone Gets Burned

The American Academy of Dermatology and the Skin Cancer Foundation both say: 2mg per cm² of skin. That's about a shot glass (30ml) for the whole body — or 35ml if you include neck, ears, and tops of feet. Most people use only a third of that. Your SPF 30 then works more like SPF 8 to 10. That's why you burn even though you "put sunscreen on."

Festival notes from years of getting this wrong:

• Sprays (Nivea Sun Spray, P20 Spray) are fast to reapply. But 30 to 40% blows away in the wind. Good for arms and legs, not for faces.
• Creams (La Roche-Posay Anthelios, Avène, Eucerin) actually deliver the SPF on the label if you put on enough. Better for face and shoulders.
• "Once a day" claims (P20, Eucerin Once Daily) hold up surprisingly well when you're not swimming. Useful when the cream runs out.
• Sunscreen in a hot tent leaks. Keep the tube in a ziplock bag.

Powerbanks: The Festival Math

A normal phone (Pixel 8: 4575 mAh, iPhone 15: 3349 mAh, Samsung Galaxy S24: 4000 mAh) lasts 6 to 10 hours of festival use. Screen on the whole time: maps, video, photos, music streaming. Add 30% losses from heat and cables. Anker explains this clearly in their charging guide. A 20,000 mAh powerbank gives you about 14,000 mAh of real, usable charge.

The working ratio for a group: one big powerbank per 2 people. Not one each. Two Anker PowerCore 26,800 mAh units serve a crew of 4 across three days of normal use — including filming sets and using Google Maps to find each other in a 50,000-person crowd. For full-send weekends, double it.

Solar chargers (Goal Zero Nomad 20, BigBlue 28W) only help if you have predictable sun and no tree shade on your pitch. They're backup, not your main supply. Charge everything the night before you leave — not the morning, when you're packing and forget.

Common Festival Packing Mistakes

Bringing glass bottles or your own spirits

Every major German festival confiscates glass at the gate. Most ban outside spirits completely. Hurricane, Wacken and MELT! actually check. Tetra Pak wine and PET liquor (decanted into a plastic bottle at home) are the workarounds people use. But check your specific festival's house rules first.

Forgetting how heavy water is

Water weighs 1kg per liter. A full 20L jerrycan is 20kg. Two of them for a crew of 8 means somebody has to carry them. At Hurricane that's a 15 to 20 minute walk from parking to the camping field. Use a folding handcart (Bollerwagen) if your festival allows it. Most do.

Phones die because nobody pre-charged

Powerbanks ship at about 50% charge from the factory. Plug them in the night before you leave. Nothing kills group coordination like finding out on Friday that the 26,800 mAh unit you're carrying has 8,000 mAh in it. Then nobody finds each other.

Skipping the dry bag for electronics

Hurricane 2016 had a lightning storm that flooded the camping fields. Whole tents got submerged. Powerbanks and cables in a sealed Ortlieb dry bag survived. Loose electronics didn't.

Forgetting Sunday morning

Most groups buy for the festival days only — not for breakdown. By Sunday at 10am you'll want one last beer, water for the drive home, and TP for one more porta-loo run. Pack a small "Sunday morning kit" separately. Otherwise you'll be tearing open already-packed gear.

Related Planning Tools

• How much sunscreen you actually need — the 35ml-per-application rule, explained in detail.
• Party drinks calculator — useful for the pre-festival warm-up or the post-festival recovery brunch.
• Daily water intake baseline — explains why the WHO seated number is too low for festival days.
• Caffeine half-life calculator — when your energy drink for the late set is too late to help.

Frequently Asked Questions