If you've ever stood in a wholesale aisle staring at a stack of aluminum foil pans wondering which size you actually need — you're not alone. Most pan packaging shows dimensions in inches, but caterers call them "full tray" or "half tray," steam table racks fit specific sizes only, and home cooks just want to know if the lasagna will fit.

This guide breaks down every standard aluminum foil pan size — what they're called, what they fit, and what each one is actually used for. Whether you're running a catering operation, prepping food trucks, stocking a commercial kitchen, or just feeding a family event, this is the chart you need.

Quick Reference: Aluminum Foil Pan Size Chart

Here's the at-a-glance chart most people are looking for. All dimensions are approximate — actual pans vary by 1/4" depending on manufacturer.

Full Tray vs Half Tray: What's the Real Difference?

The most common question we get: "Do I need a full tray or a half tray?" Here's the honest answer.

A full-size aluminum pan measures roughly 21" x 13" and feeds 30–50 people depending on what's in it. A half-size pan is exactly that — half the length at about 12.75" x 10.5" — and feeds 15–25 people. If you're catering for 25 or fewer, a half tray is plenty. For 30+, go full.

One thing nobody tells you: full trays are harder to handle. They need two hands, they're awkward to fit in standard ovens, and they don't always slide into smaller chafing racks. Half trays fit virtually any rack, oven, and warmer. For most operators, two half trays are more flexible than one full tray — even though they cost slightly more per ounce.

Sterno Pan Sizes (Chafing Dish Setups)

"Sterno pan" usually refers to half-size pans that fit in a standard chafing rack heated by sterno fuel canisters. The pan size that fits a sterno rack is the half size — 12.75" x 10.5" — and most caterers stock these by the case for buffet service.

If you're new to chafing setups, here's the basic rule: a chafing rack holds one full pan or two half pans, with sterno cans underneath. Half pans give you more flexibility (you can offer two dishes per rack) which is why they're the catering default.

Steam Table Pans: Standard, Deep, and Extra Deep

Steam table pans come in three depths:

• Standard depth — about 2.5" deep. Good for sides, rice, vegetables.
• Deep — about 3" deep. Standard for most catering hot food.
• Extra deep — 4" or more. Used for heavy soups, stews, and high-volume buffets.

Pan footprints (length and width) are standardized, so a half-size deep pan fits the same rack as a half-size standard. Only the depth changes. This matters because if you're prepping for a long event and want food to stay hot longer, deeper pans hold more heat.

Home Cooking Sizes: 9x9, 9x13, Loaf, and Round Pans

Most home recipes call for one of four pan sizes:

• 9" x 9" square — brownies, cornbread, smaller casseroles
• 9" x 13" rectangle — lasagna, sheet cakes, baked ziti
• Loaf (8" x 4") — banana bread, meatloaf, pâté
• Round (7" or 9") — pies, single-layer cakes, quiche

Disposable aluminum versions of all four are sold in bulk, which is the smart move for anyone hosting holidays, doing meal prep, or running bake sales. No washing, no scrubbing, no stuck-on residue.

How to Pick the Right Pan Size for Your Operation

Here's the simple decision framework we recommend to commercial customers:

For catering operations:

• Default to half pans (12.75" x 10.5") — most flexible, fit every chafing rack
• Stock full pans (21" x 13") for events of 30+ people
• Keep quarter pans on hand for sauces, condiments, and small sides

For restaurants and food trucks:

• Half pans for prep and steam table service
• Quarter pans for portion control and to-go orders
• Loaf pans for breakfast prep, meatloaves, and individual servings

For home use:

• 9" x 13" for almost any casserole or main dish
• 9" x 9" for sides, brownies, smaller bakes
• Half pans for hosting events of 10–20 people

Why Buy Aluminum Foil Pans in Bulk

Single-pack aluminum pans at grocery stores cost 3–4x what bulk cases cost per unit. A 30-pack of half pans at retail might run $25 — that's roughly $0.83 per pan. The same pans bought by the case (typically 100 count) run about $0.50–0.60 per pan.

If you're a caterer, restaurant, food truck, or even a frequent home host, bulk buying pays for itself in 2–3 events. Plus you stop running out at the worst possible moment.

Shop Aluminum Foil Pans by Size

Rhino Aluminum carries every standard pan size in commercial-grade thickness, sold by the case at wholesale pricing — direct from the manufacturer, with free shipping and 24-hour order processing. No middleman markups. No minimums.

Browse our full lineup of aluminum foil pans and find the size that fits your operation.

Frequently Asked Questions

What size is a half tray aluminum pan? A half tray (also called a half size pan or sterno pan) measures approximately 12.75" x 10.5" x 2.5" deep. It feeds 15–25 people and fits standard chafing racks.

How big is a full tray aluminum pan? A full tray (full size pan) measures approximately 21" x 13" x 3" deep. It feeds 30–50 people and is the standard size for large catering events.

What's the difference between a quarter pan and a half pan? A quarter pan is 8.5" x 6.5" — exactly half the size of a half pan. Quarter pans are used for individual portions, condiments, and food truck service. Half pans are the catering standard for sides and main dishes.

Can aluminum foil pans go in the oven? Yes. Commercial-grade aluminum foil pans are oven-safe up to 400°F+ and freezer-safe down to -40°F. They work in conventional ovens, toaster ovens, and even on grills.

Do aluminum pans fit in standard chafing racks? Half-size pans (12.75" x 10.5") fit virtually every standard chafing rack on the market. Full-size pans fit full-size racks only. Always check rack dimensions before ordering for an event.