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How much coffee to put in a 100-cup percolator

Use about 6¼ cups of ground coffee for a full 100-cup percolator, roughly 1 level tablespoon per cup, for mild coffee (typical). A percolator cup is about 5 ounces (typical), so a full batch is about 500 ounces: 100 small cups, or about 62 eight-ounce cups.

Updated

How much coffee grounds for 100 cups

The chart below is West Bend’s for its 100-cup urn, and the charts printed inside most large percolators are close to it. It works out to about 1 level tablespoon of grounds per cup (typical) of water, measured with ordinary kitchen measuring cups, and makes mild coffee. For stronger coffee, add a little more grounds rather than less water.

Ground coffee by water level, 100-cup percolator (typical manufacturer chart)
Water filled toGround coffeeIn tablespoons
100 cups6¼ cupsabout 100
80 cups5 cupsabout 80
60 cups4 cupsabout 60
40 cups2½ cupsabout 40

If the percolator you have prints its own chart on the basket or the inside wall, follow that one.

How many cups of coffee a 100-cup percolator makes

100 cups of about 5 ounces (typical) each, roughly 500 ounces in all. A percolator “cup” is smaller than a coffee mug, and makers do not all use the same size (3.5, 5 or 8 ounces (typical) are all in use), so count servings by the cup you will hand out:

One full 100-cup batch (about 500 oz, typical)
ServingServings per batch
5-oz cup100
8-oz cup62
10-oz cup50
12-oz cup41

At an 8-ounce cup, one full batch serves about 62 people. For how many of your guests will want coffee, see how much coffee for 100 guests.

How long a 100-cup percolator takes to brew

Up to about a minute per cup (typical), so allow up to 100 minutes (typical) for a full batch. Switch it on well before guests arrive, or before dinner if coffee goes out with dessert. A light on the base usually shows when it is done, and the coffee stays hot for as long as the pot stays plugged in.

  • Fill with cold water to the line first, then add the basket of grounds, then put the lid on and lock it.
  • Lift the basket out once brewing stops, so the coffee does not sit under wet grounds.
  • Switch off when about 3 cups (typical) are left. The heater should not run with the bottom of the pot dry.

Grind, basket and the minimum fill

  • Use regular or percolator grind, medium to coarse. Fine drip grind slips through the basket and can flood it, which leaves grounds in the cups.
  • No paper filter. If grounds fall through, wet the empty basket before you fill it.
  • Do not brew below the lowest mark: about 40 cups (typical) on a 100-cup model. For a smaller group, a smaller pot or a hot beverage dispenser filled from a home brewer is the better fit.

Power at the coffee station

A 100-cup percolator draws about 1,500 watts (typical), and a standard 15-amp household circuit carries about 1,800. Two percolators on the same circuit will usually trip the breaker, so plug them into outlets on different circuits, and keep a coffee urn off the circuit that runs the kitchen or the DJ.

Brewing on the beach brings its own rules on generators and cups; the coffee for 100 guests guide covers them.

The coffee service we rent

Add coffee service to your quote request with your guest count and when coffee will be served.

Common questions

How much coffee grounds do I need for a 100-cup percolator?

About 6¼ cups of ground coffee, roughly 1 level tablespoon per cup, for the mild strength most people prefer (typical). Add a little more for stronger coffee.

How many cups of coffee does a 100-cup percolator make?

100 five-ounce cups (typical), which is about 62 eight-ounce cups or 41 twelve-ounce cups.

How long does a 100-cup percolator take to brew?

Up to about a minute per cup (typical), so allow up to 100 minutes for a full batch and switch it on well before guests arrive.

Can you make less than 100 cups in a 100-cup percolator?

Yes, down to the minimum mark inside the pot, often around 40 cups on a 100-cup model (typical). Use the grounds amount for the water line you fill to.

What grind of coffee do you use in a percolator?

Regular or percolator grind, medium to coarse. Fine drip grind can slip through the basket or flood it, and the basket takes no paper filter (typical).

Rentals in this guide

Compare every size and option in our catering equipment catalog. Planning a whole event? See our corporate event rentals or holiday party rentals.

Have your guest count and date? Request a quote with the items above, or browse the full rental catalog. Questions first? Call (850) 904-6785.