Sizes, Diameters & Weights of All U.S. Coins [Metric & Imperial]

Sizes, weights, diameters of all U.S. Coins

Do you know how much a penny weighs?

Of course not. Knowing how much a penny weighs or what the diameter of a nickel is, is not information you need on a daily basis. In fact, it’s only really useful in a few situations: obscure trivia, homework, or odd math problems.

Anyways, for whatever reason you need to know these facts, here are all the sizes, weights, thickness, composition and diameters of all U.S. coins.

U.S. Coin Sizes, Weights, & Composition

Denomination Value Weight Diameter (Width) Thickness Composition
Penny $0.01 2.5 grams (0.088 oz) 0.75 in (19.05 mm) 1.52 mm Copper Plated Zinc
Nickel $0.05 5 grams (0.176 oz) 0.835 in (21.21 mm) 1.95 mm Cupro-Nickel
Dime $0.10 2.268 grams (0.08 oz) 0.705 in (17.91 mm) 1.35 mm Cupro-Nickel
Quarter $0.25 5.67 grams (0.2 oz) 0.955 in (24.26 mm) 1.75 mm Cupro-Nickel
Half Dollar $0.50 11.34 grams (0.40 oz) 1.205 in. (30.61mm) 2.15 mm Cupro-Nickel
Dollar Coin $1.00 8.1 grams (0.286 oz) 1.043 in. (26.49 mm) 2.00 mm Manganese-Brass

Penny Specifications:

The Union Shield Design of the Penny

How much does a penny weigh?

A penny weighs 2.5 grams (0.088 oz).

However, a penny made before 1982 had a different composition than the modern penny and weighed 3.1 grams.

What’s the diameter of a penny?

Since the diameter of a penny is also it’s width, the width and diameter of a penny is 0.75 inches (19.05 mm).

How thick is a penny?

A penny is 1.52 mm thick.

What are pennies made of?

Nowadays, a penny is made of 97.6% zinc and 2.4% copper.

The composition of a penny has changed over the years. In 1091, when the first Lincoln cent was produced, the penny was made of pure copper. But because of a copper shortage during World War II, in 1943 the penny was made of zinc coated steel. Then it was made of 95% copper and 5% zinc. After 1982, the modern composition of 97.6% zinc and 2.4% copper was used.

Nickel Specifications:

How much does a nickel weigh?

The modern nickel weighs 5 grams (0.176 oz).

The buffalo nickel also weighs 5 grams or 0.176 oz.

What’s the diameter of a nickel?

A nickel is 0.835 inches (21.21 mm) wide.

An older version of the nickel, the shield nickel, is a little thinner at 0.807 inches (20.5 mm) wide.

How thick is a nickel?

A nickel is 1.95 mm thick.

What are nickels made of?

Nickels are made of a cupronickel mix of 25% nickel and 75% copper.

During a part of World War II (mid-1942 to 1945), because of the metal shortage, the nickel composition changed for a short period of time to:

  • 56% copper
  • 35% silver
  • 9% manganese

Dime Specifications:

Franklin D Roosevelt is on the Dime. Reverse-side of the dime.

How much does a dime weigh?

A dime weighs 2.268 grams (0.08 oz).

What’s the diameter of a dime?

A dime is 0.705 inches (17.91 mm) wide.

How thick is a dime?

A dime is 1.35 mm thick.

What are dimes made of?

Dimes are currently made of a cupronickel mix of 91.67% copper and 8.33% nickel.

However, that wasn’t always the case. Before 1965, the dime was made of 90% silver and 10% copper.

Quarter Specifications:

George Washington is on the Quarter The Eagle is on the backside of the Quarter

How much does a quarter weigh?

A quarter weighs 5.67 grams (0.2 oz).

What’s the diameter of a quarter?

The quarter’s diameter is 0.955 inches (24.26 mm).

How thick is a quarter?

The thickness of a quarter is 1.75 mm.

What are quarters made of?

Quarters are made of a cupronickel allow of 91.67% copper and 8.33% nickel. However, before 1965, the quarter was made out of 90% silver and 10% copper. This is why any pre-1965 quarters are worth more than 25 cents.

Half Dollar Specifications:

John F Kennedy is on the Half Dollar Reverse side of the Half Dollar Depicting an Eagle

How much does a half dollar weigh?

A half dollar weighs 11.34 grams (0.40 oz).

What’s the diameter of a half dollar?

A half dollar is 1.205 inches (30.61mm) wide.

How thick is a half dollar?

A half dollar is 2.15 mm thick.

What are half dollars made of?

Over time, the composition of the half dollar has changed. Pre 1964, the half dollar was composed of 90% silver and 10% copper. From 1965 to 1970, the half dollar was composed of 40% silver and 60% copper. But since 1971, just like the quarter and dime, the composition of the half dollar changed to a cupronickel alloy of 75% copper and 25% nickel.

Dollar Coin Specifications:

Sacagawea Dollar Front-side Depicting Sacagawea Sacagawea Dollar Backside depicting Eagle

How much does a dollar coin weigh?

A dollar coins weighs 8.1 grams (0.286 oz).

What’s the diameter of a dollar coin?

The diameter of a dollar coin is 1.043 inches (26.49 mm).

How thick is a dollar coin?

A dollar coin is 2.00 mm thick.

What are dollar coins made of?

Though the dollar coin is gold-colored, it is not made of gold. The dollar coin is composed of a manganese-brass alloy which is made of 77% copper, 7% manganese, 12% since and 4% nickel. Pay attention that Eisenhower dollar coin has different specs.

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