Beer Pong Calculator

Plan a beer pong party in seconds: enter your tables, cups per side, beer per cup, and guest count to see how many cups, ping pong balls, and cans or ounces of beer to buy.

Quick Facts

Standard setup
10-cup rack per side → 20 cups per table
Cups = tables × 2 × cups-per-side, plus a spare margin. Beer = game cups × oz-per-cup, converted to cans.

Your Results

Calculated
Total cups to buy
-
Game cups plus spare margin
Ping pong balls
-
2 per table, plus spares
Beer needed
-
Total volume for all cups
Cans / bottles
-
Rounded up to whole units

Ready

Enter your setup and press Calculate.

How the beer pong planner works

Beer pong is played on a long table with two triangle racks of cups facing each other. The classic rack is a 10-cup pyramid (rows of 4, 3, 2, 1) on each end, so a single game uses 20 cups per table. This planner takes your number of tables, cups per side, how much beer goes in each cup, a spare-cup margin, your guest count, and your can or bottle size, then works out exactly what to buy.

The formulas

  • Game cups = tables × 2 × cups-per-side. With 2 tables and a 10-cup rack that is 2 × 2 × 10 = 40 cups.
  • Total cups to buy = game cups × (1 + spare% / 100), rounded up. A 25% margin on 40 cups gives 50 cups to cover re-racks, drops, and drinking cups.
  • Ping pong balls = tables × 2, plus the same spare margin. Each game needs 2 balls; balls get lost or land on the floor, so buy extras.
  • Beer needed (oz) = game cups × oz-per-cup. Filling 40 cups to 2 oz each needs 80 oz of beer.
  • Cans / bottles = beer-oz ÷ can-size, rounded up. 80 oz ÷ 12 oz = 6.67, so buy 7 cans.

Why cups are not filled to the brim

Under most house rules you do not fill each cup — a shared pour of about 2 oz (roughly 60 mL) per cup is standard so the game stays social rather than a race to blackout. At 2 oz per cup, one 12 oz can fills six cups, and a full 10-cup side uses about 20 oz — a little under two cans. If your crowd fills cups fully (a US Solo cup holds ~16 oz to the rim, ~12 oz to the top line), raise the "beer per cup" input and the beer total climbs fast.

Common reference points

  • Standard rack: 10 cups per side, 20 cups per table.
  • Six-cup rack: a shorter game (rows of 3, 2, 1) — set cups-per-side to 6 for 12 cups per table.
  • Solo cup sizes: the ubiquitous red cup is 18 oz; the common line markings sit near 1, 5, and 12 oz.
  • Standard beer can: 12 oz (355 mL); a tallboy is 16 oz; a pint is 16 oz.

Frequently Asked Questions

How many cups do I need for beer pong?
One game needs two 10-cup racks, so 20 cups per table. Multiply by the number of tables running at once, then add spares. This planner uses tables × 2 × cups-per-side and applies your spare-cup margin (25% by default) to cover re-racks, spills, and cups used just for drinking.
How much beer should I buy?
Multiply the number of game cups by the ounces you pour per cup, then divide by your can or bottle size and round up. Two tables with 10-cup racks and 2 oz per cup need 80 oz of beer — about seven 12 oz cans per full round. Buy extra: guests drink beer that never touches the table.
How many ping pong balls should I have?
Each game uses 2 balls, so at minimum you need 2 per table running simultaneously. Balls hit the floor, roll away, and get grimy, so buy a pack of extras — this planner adds your spare margin on top of the 2-per-table minimum.
Do both sides share one rack of cups?
No. Each end of the table has its own rack, so a "10-cup" game actually sets out 20 cups. That is why the formula multiplies cups-per-side by 2 before multiplying by the number of tables.

Related calculators