Sheet pans come in four standard sizes. The half sheet (18x13 inches) is the workhorse of the home kitchen and fits in virtually every standard oven. Full sheets are commercial. Quarter sheets and jelly roll pans suit smaller batches and compact ovens.
Sheet Pan Size Reference Table
| Name | Dimensions | Area | Depth | Common uses |
|---|---|---|---|---|
| Full sheet | 26x18 inches | 468 sq in | 1 inch | Commercial bakeries only |
| Half sheet | 18x13 inches | 234 sq in | 1 inch | Cookies, roasting, sheet cakes |
| Quarter sheet | 13x9 inches | 117 sq in | 1 inch | Small batch cookies, bar cakes |
| Jelly roll pan | 15x10 inches | 150 sq in | 1 inch | Thin sheet cakes, jelly rolls |
| Eighth sheet | 9x6.5 inches | ~58 sq in | 1 inch | Individual portions, toaster ovens |
The quarter sheet (13x9) has the same area as a standard 9x13 baking pan. A recipe written for one will work in the other at the same batter depth.
Half Sheet Pan: The Standard
The 18x13-inch half sheet pan (also called a rimmed baking sheet or baking sheet) is by far the most common home baker’s pan. Standard features:
- Dimensions: 18 × 13 × 1 inch (outer); inner baking surface typically 17.25 × 12.25 inches
- Area: 234 sq in (outer), ~211 sq in (inner baking surface)
- Capacity: 2–2.5 dozen standard cookies laid flat; one batch of roasted vegetables; one standard sheet cake
The most widely recommended material is aluminum. Heavy-gauge (18 gauge) aluminum pans heat evenly and resist warping at high temperatures. Nonstick pans can work for cookies but tend to overbrown bottoms.
Quarter Sheet vs. Jelly Roll Pan
Both are smaller alternatives, but they are not interchangeable without adjustment:
| Feature | Quarter sheet | Jelly roll pan |
|---|---|---|
| Dimensions | 13x9 inches | 15x10 inches |
| Area | 117 sq in | 150 sq in |
| Depth | 1 inch | 1 inch |
| Scale multiplier (relative to half sheet) | 117 ÷ 234 = 0.5 | 150 ÷ 234 = 0.64 |
A half-sheet recipe scaled to a quarter sheet uses half the ingredients. A half-sheet recipe scaled to a jelly roll pan uses about 64% of the ingredients.
Scaling a Cookie Recipe Between Pan Sizes
Most cookie recipes specify the half sheet as the baseline. If you use a smaller pan:
- Quarter sheet: halve the recipe, or bake in batches
- Jelly roll pan: use 64% of the recipe, or bake in 2–3 batches
For bar cookies and sheet cakes (where the batter depth must be consistent), use the area ratio as your multiplier, as shown in the table above.
Pan Material: What to Buy
Not all sheet pans perform the same. Here is how common materials compare:
| Material | Gauge | Browning | Warping | Notes |
|---|---|---|---|---|
| Aluminum (heavy, 18-gauge) | Thick | Excellent, even | Resistant | Best all-purpose; restaurant-standard |
| Aluminum (light, 22-gauge) | Thin | Good | Prone to warping at high heat | Budget option; fine for low-temp baking |
| Nonstick aluminum | Heavy | Good | Resistant | Easier release; avoid metal utensils |
| Stainless steel | Heavy | Good | Resistant | More expensive; less even browning than aluminum |
| Rimless cookie sheet | — | Crisp bottoms | N/A | Best for cookies needing maximum airflow |
Heavy-gauge aluminum pans warp less because the thicker metal handles thermal expansion more uniformly. Thin pans can buckle loudly in a hot oven — this is warping. It does not necessarily ruin the food, but it causes uneven browning because the pan is no longer flat.
Preventing Warping
Warping happens when one part of the pan heats faster than another — typically the center versus the edges. To minimize it:
- Buy heavy-gauge (18 or 22-gauge) pans; the weight specification is usually listed on commercial products
- Preheat pans in the oven rather than sliding a cold pan into a hot oven
- Avoid running cold water over a hot pan
- Line with parchment rather than silicone mats for very high-temperature roasting (above 450°F) — thick silicone mats can slow bottom-side browning
Oven Fit by Pan Size
| Pan | Typical home oven fit | Notes |
|---|---|---|
| Half sheet | Most home ovens | Measure your oven — some compact models are tight |
| Quarter sheet | All home ovens | Good for toaster ovens and countertop ovens |
| Jelly roll | All home ovens | Fits RV ovens and small apartment ovens |
| Full sheet | Commercial only | 26-inch width exceeds all standard home ovens |
Measure your oven’s interior width (not the door width) before buying a half sheet. Most standard US home ovens accommodate 18-inch pans with at least an inch of clearance on each side. Compact or apartment ovens may have interior widths of only 19–20 inches, which is borderline for a half sheet.
Stacking and Storage
Half sheet pans can be stacked, but nonstick coatings scratch if pans are stored without protection. Place a sheet of parchment between stacked nonstick pans, or store them vertically in a rack. Heavy aluminum pans can be stacked and nested without protection.
Using Multiple Racks
A full load of half sheet pans — two at a time on different racks — works best in convection mode, which circulates air between racks and equalizes temperature. In conventional mode, the middle rack produces the most even results for a single pan; if baking two pans at once, swap top and bottom positions halfway through.
Use the pan size converter calculator to calculate batter multipliers between any two sheet pan sizes.