Fire Pit Grate vs Fireplace Grate: Which One Should You Buy?

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The quick answer

Burning in a fire pit? Get a round grate a few inches smaller than the pit’s inside diameter: the Ash & Ember 40 inch wagon wheel grate, for example, needs a pit at least 42 inches across, and it also comes in 20, 24, 28, 32 and 36 inch options. Burning in a fireplace or stove? Get a grate that fits the firebox, usually rectangular. Either way, look for elevation for airflow and heavy steel that will not warp.

What a grate does

A grate does three things. It lifts the logs so air reaches the fire from below, which the Ash & Ember does with a 4 inch elevation. It lets ash and embers drop through instead of smothering the coals. And it keeps the pile in place: the Ash & Ember’s 16 curved steel bars stop logs rolling off while you tend the fire. It also keeps direct heat off the pit base or hearth floor, which the listing says helps the fire pit last longer.

Fire pit grates

Fire pit grates are usually round to match round pits. Sizing is the whole game: measure the inside diameter of your pit and buy a grate smaller than it, so the grate drops in with room around the edge. The Ash & Ember 40 inch grate needs a pit at least 42 inches across, and the same design comes in 20 through 36 inch sizes for smaller pits. At 87 pounds it is a set-it-and-leave-it grate, not one you carry to a campsite, and it needs no assembly. The light oil finish will develop a natural patina over time, per the listing.

Fireplace grates

Fireplace grates are usually rectangular to fit a rectangular firebox, though round grates work where they fit: the onlyfire 22 inch grate lists fire rings, campfire pits and backyard fireplaces among its uses. Its 4 removable legs are the standout feature: they detach for flat-pack storage and transport, then elevate the grate for stability on uneven ground. The heavy-gauge steel carries a high-temperature coating the listing says slows rust and corrosion, and the reinforced welded grid is built to hold heavy loads without bending. While not intended for direct grilling, the flat top doubles as a stand for Dutch ovens, stock pots and kettles.

Fire Pit Grate vs Fireplace Grate: The Gear

Two grates from the listings, ranked by Woodlot Score from highest to lowest.

#1: Ash & Ember 40 inch wagon wheel grate

The Ash & Ember is the big-pit grate: 40 inches across, 87 pounds of 0.75 inch sandblasted steel in a wagon wheel and spoke design with 16 curved bars. The 4 inch elevation feeds air under the logs for stronger, longer-burning flames with less smoke, per the listing, and the curved bars keep logs from rolling. It fits fire pits with an inside diameter of at least 42 inches, needs no assembly, and the light oil finish develops a natural patina. Smaller 20 to 36 inch versions cover smaller pits.

#2: onlyfire 22 inch grate with removable legs

The onlyfire is the portable one: a 22 inch round grate with 4 removable legs for flat-pack transport in a car trunk or RV. The heavy-gauge steel frame has a high-temperature resistant coating against rust and corrosion, and the reinforced welded grid is rated by the listing for heavy firewood loads without bending or warping. It fits standard fire rings, campfire pits and backyard fireplaces, and the flat top works as a Dutch oven and kettle stand. Two spec table quirks to note: it lists both stainless steel and alloy steel as the material, and a 12 inch dimension against the 22 inch title; trust the title and bullets. No weight is stated.

How to size a grate

Measure before you buy:

• Fire pit: measure the inside diameter and buy a grate a few inches smaller. A 40 inch grate in a 42 inch pit leaves an inch a side.
• Fireplace: measure the firebox width and depth, and pick a grate that sits inside with clearance on all sides.
• Height: legs and elevation add height; make sure the fire still sits well below the pit rim or fireplace opening.
• Weight: an 87 pound grate stays where you put it; a legged 22 inch grate travels.

Frequently Asked Questions

Can I use a fire pit grate in a fireplace?

If it fits the firebox, yes. Round pit grates work in large fireplaces, but most fireplaces suit a rectangular grate better. Measure the firebox first.

What size grate do I need for my fire pit?

Measure the pit’s inside diameter and choose a grate a few inches smaller. The Ash & Ember comes in 20, 24, 28, 32, 36 and 40 inch sizes, with the 40 inch needing at least a 42 inch pit.

Will a steel fire grate rust?

Eventually, outdoors. The Ash & Ember has a light oil finish that develops a patina, and the onlyfire has a high-temperature coating the listing says slows rust and corrosion. Neither is rust-proof forever.

Can I cook on a fire pit grate?

The onlyfire listing names Dutch oven, stock pot and kettle use on its flat top, though not direct grilling. The Ash & Ember is sold as a firewood grate, not a cooking surface.

How heavy is a 40 inch fire grate?

The Ash & Ember 40 inch lists 87 pounds. Plan to set it once rather than move it around.

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