What Is Griswold Pan Numbering? (Size Chart)

A Griswold skillet’s stamped size number is a nominal identifier, not its diameter in inches. Use it to estimate the pan’s general size, then measure the actual rim and cooking surface if fit matters. Common examples include a #8 at about 10½ inches across the outside rim and a #10 at about 12 inches.

The number helps you compare skillets, but it does not tell you the exact cooking area, age, or model. That distinction matters when you are checking whether a pan will fit a burner, oven, shelf, or recipe. I treat the stamped number as a useful first clue, then confirm the measurements that affect the task.

Cast iron also has practical cooking traits worth knowing: it heats more slowly than some cookware but retains heat well. Bare cast iron can work on induction when its base makes good contact. The size chart below is a guide, not a substitute for measuring the individual pan.

Identify the Griswold Size Mark and Pan Model

A Griswold size number is a nominal label used to identify a skillet’s general size. It is commonly stamped on the underside and does not represent an exact inch measurement. A separate pattern or model number may also appear; read these markings as different kinds of information.

Check the underside after cleaning and drying the pan enough to see its markings. The size number may be easier to find near the handle or on the base, but stamp placement and visibility can differ. Wear, residue, and seasoning may make a mark hard to read, so do not rely on a faint number alone.

How is the size number different from a pattern number?

The size number gives a broad size category, while a pattern or model number identifies a particular design or casting pattern. A pattern number is not a second way to state the skillet’s diameter. Keep the markings separate when you record or compare a pan, and do not use either number alone to claim an exact age.

A number on the underside is not a reliable date code. Skillet details can vary by model, and a size number does not identify a particular series. If you are comparing two pans with the same stamped number, measure them rather than assuming they have identical rims or cooking surfaces.

Griswold skillet size chart

The chart gives approximate outside rim diameters for commonly encountered sizes. These are reference figures, not guaranteed measurements for every skillet. The rim measurement is taken across the pan’s outside edge; the usable cooking surface inside the rim is smaller.

The numbers do not rise in equal steps. For example, the listed outside diameter changes from about 10¼ inches for a #7 to about 10½ inches for a #8. Treat each entry as an estimate for identifying a size range, not as a promise that every pan of that number measures exactly the same.

Measure the Skillet and Match It to the Cooking Task

The stamped size helps you narrow down a skillet’s scale, but direct measurement settles questions of fit. Measure the outside rim and the cooking surface separately, since they answer different questions. Then compare the pan’s base with the burner or induction zone you plan to use.

How to measure the rim and cooking surface

Set the clean, dry skillet on a stable, level surface. Use a ruler or tape measure to measure straight across the outside rim at its widest point. For the cooking surface, measure across the flat interior area where food will sit, not across the sloping walls.

Write down both measurements and label them clearly. If the pan’s shape is not perfectly round, measure in more than one direction and note the largest width. This avoids confusing a nominal size with a measured diameter when you are checking storage space or comparing a listing.

Measurements may differ depending on the model and the point measured. A seller’s “10-inch skillet” might refer to a rounded nominal description, not the exact outside rim or interior cooking surface. Ask which part was measured if a specific clearance or fit is important.

Match the base to the burner

A burner or induction zone close to the pan’s base diameter is a practical starting point. The rim can be much wider than the base, so do not choose a heat zone by the rim measurement alone. On induction, the pan must make good contact with the cooking surface to work as intended.

As a sizing example, a #8 may have an outside rim near 10½ inches, but that figure alone does not tell you whether the pan’s base suits a particular induction zone. Measure the base. In another example, a #5 may be convenient for a smaller cooking task, but the actual interior area is the better guide when you need to judge how much food can sit in one layer.

These are measurement scenarios, not claims about specific pans. The key step is to use the dimension tied to your question: rim for clearance, base for burner contact, and interior surface for cooking space.

Clean, Dry, and Maintain the Cast-Iron Surface

Basic care helps limit rust and protects the pan from avoidable thermal stress. Let the skillet cool before washing, dry it thoroughly, and avoid leaving it wet. A very thin oil film can be used for storage. Do not pour cold water into a very hot pan.

Check the pan before using it

Clean and dry the skillet, then inspect it before cooking. Look for cracks, severe pitting, a pan that wobbles on a flat surface, and a loose handle. A stamped size can help identify the pan, but it does not show whether the skillet is in sound condition.

If the handle is loose or you find a crack, do not treat the size chart as a safety check. A pan’s condition matters more than its number. If you cannot tell whether damage affects safe use, have someone qualified assess it before cooking.

Cool, wash, dry, and store

After cooking, allow the skillet to cool before washing. Pouring cold water into very hot cast iron can cause thermal shock, which may crack or distort the pan. Do not leave cast iron wet, since moisture can lead to rust.

Once clean, dry the pan thoroughly. If storing it, apply a very thin film of oil rather than leaving a visible layer. The goal is a dry surface with minimal oil, not a greasy coating. These steps apply whether the skillet is a #3 or a #12.

Serve from the Pan and Handle It Safely

Cast iron retains heat well, so a skillet can remain hot after it leaves the burner. Use a dry, heat-safe mitt or handle cover, and set the pan on a surface that can tolerate heat. The stamped size may suggest weight and reach, but always handle the actual skillet with care.

Bare cast iron can be used in an oven, but there is no single manufacturer-independent maximum temperature for every pan. Oven use depends on the skillet and any attached components. Check the pan’s condition and any relevant instructions, especially if it has an attachment that may not be oven-safe.

For cooking, preheat gradually over low-to-medium heat rather than leaving the skillet empty over high heat for a long time. Add cooking fat and food once the pan is warmed. Its retained heat can help brown food, but gradual heating helps reduce sudden temperature changes.

If food is browned and sticks at first, give it time; it may release more readily as cooking continues. For deglazing, add a suitable liquid as needed, but avoid a sudden cold-water shock to a very hot pan. Allow the skillet to cool before cleaning.

The size number helps you start a comparison. Your final choice should rest on measured dimensions, pan condition, cooking needs, and the fit of the base to the heat source.

Griswold Pan Numbering FAQ

These answers explain what a stamped skillet number can tell you, what it cannot establish, and which measurements to check next. Use the number as a size guide, then measure the specific pan whenever fit, cooking area, or storage clearance matters.

Does a Griswold #8 measure exactly 8 inches?

No. A #8 is a nominal size number, not an exact diameter in inches. A common approximate outside rim measurement for a #8 Griswold skillet is 10½ inches. Measure the actual rim, base, and interior cooking surface if a precise fit or usable area matters.

What is the outside diameter of a Griswold #10?

A common approximate outside rim diameter for a Griswold #10 skillet is 12 inches. Individual measurements can vary by model and measurement point. Check the actual rim for clearance and the base for burner or induction-zone fit instead of relying only on the stamped number.

Where can I find the Griswold size number?

The size number is commonly stamped on the underside of the skillet. Clean and dry the pan so residue does not hide the mark. You may also find separate pattern or model markings, which should not be mistaken for the size number.

Does the Griswold number tell me the pan’s age?

No. The size number identifies a nominal size category; it is not a reliable date code. Do not use it by itself to identify a skillet’s age, series, or pattern. Other markings and pan details may provide separate clues, but they are distinct from size.

Is a pattern number the same as the size number?

No. A pattern or model number refers to a design or casting pattern, while the size number indicates the skillet’s general size. Record the markings separately. Neither number should replace direct measurements when you need to check fit or cooking area.

How do I measure a Griswold skillet?

Measure straight across the outside rim at its widest point for the rim diameter. Then measure across the flat interior cooking area and across the base. These dimensions answer different questions: clearance, usable surface, and burner or induction contact.

Which measurement matters for an induction cooktop?

Check the skillet’s base diameter and whether it makes good contact with the induction surface. The outside rim can be wider than the base, so it may not show how the pan will sit on a cooking zone. The stamped size alone cannot confirm a fit.

Can I put a Griswold skillet in the oven?

Bare cast iron can be used in an oven, but there is no single maximum temperature that applies to every pan and setup. Consider the skillet’s condition and any attached components. Check relevant instructions before use, especially if the pan has non-cast-iron parts.

(This article was written by one of our staff writers, Julian R. Hayes. Visit our Meet the Team page.)