Catering Pan Calculator

Pick the pan, say how the food is served, and enter your guest count. The calculator works out servings per pan from the pan's real capacity and your scoop or piece size — then how many pans to buy or fill.

The Pan Doesn't Decide the Servings — the Scoop Does

Ask how many people a half pan feeds and you'll hear "10 to 15", "about 20" and "25" in the same conversation. A long-running barbecue forum thread on exactly this question has one caterer saying the same pan feeds 60 to 70 people with baked beans but only about 40 with mac and cheese. Nobody is wrong. They are using different portions.

A deep full foil pan holds about 274 fluid ounces once you leave room at the top. At a 4-ounce scoop that is 68 servings — right where the 60 to 70 for beans comes from. People help themselves to more like 6 to 7 ounces of mac and cheese, and 274 divided by 6.5 is about 40. Same pan, same food volume, a 70% difference in headcount. Choose the portion first and the pan math follows.

How Much Each Pan Holds

Pan	To the rim	In service	4 oz servings	6 oz servings
Foil half, medium	107 fl oz	86 fl oz	21	14
Foil half, deep	128 fl oz	102 fl oz	25	17
Foil half, extra deep	195 fl oz	156 fl oz	39	26
Foil full, medium	232 fl oz	186 fl oz	46	30
Foil full, deep	343 fl oz	274 fl oz	68	45
Half hotel pan, 4 in	5½–6½ qt	176 fl oz	44	29
Full hotel pan, 4 in	8–11 qt	256 fl oz	64	42
9×13 dish, 2 in deep	about 130 fl oz	104 fl oz	25	17

Foil pan capacities are measured to the rim by the manufacturer; "in service" is 80% of that. Hotel pan figures use the low end of published ranges, which is what equipment suppliers recommend planning with for hot service. A 9×13×2 in dish is 234 cubic inches, about 4 quarts brimful.

Why Plan on 80%, Not the Rim

Capacities on pan sleeves and spec sheets are brimful: fill it to the very edge with water and that's the number. Nobody serves that way. A pan filled to the rim slops in the car, crusts over at the edges in a chafing dish and overflows the moment someone digs a spoon in. Foodservice suppliers advise holding food about an inch below the rim, which on a standard steam pan works out close to 80% of the rated volume. The calculator uses that figure for foil pans so the servings it gives are servings you can actually scoop.

Foods You Cut Instead of Scoop

Lasagna, baked ziti served in squares, sheet cake, cornbread and bars are counted by area, so depth doesn't matter. A half pan is about 12 × 10 in and a full pan 12 × 20 in.

Piece size	Half pan	Full pan	9×13 dish
3 × 4 in (main)	9	20	9
3 × 3 in (standard)	12	24	12
2 × 3 in (side)	20	40	18
2 × 2 in (bars)	30	60	24

A Worked Example

Forty guests, mac and cheese as one of several sides, served with a #8 scoop (4 ounces), with 10% extra for seconds: that's 44 servings. A deep foil half pan holds about 102 fluid ounces in service, which is 25 servings, so two half pans cover it with a few portions spare. One deep full pan (68 servings) would also do it — but two halves let you keep one hot in the oven while the other is on the table.

For lasagna as the main course, the same 40 guests with no seconds need 40 pieces. At 3 × 4 in, a half pan gives 9 and a full pan 20, so plan on two full pans.

Keeping a Buffet Safe

Hot food on a buffet needs to stay at 140°F or above, and anything that drifts into the 40–140°F range should go back to the kitchen or the bin within two hours — the same rule covered in how long food can sit out. This is the practical case for two half pans over one full pan: put one out, keep the other hot, and swap them rather than topping up a pan that has been sitting at room temperature.

Frequently Asked Questions