🗺️ Barns to Ares Converter

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Converted Value
1e-30

Also available in our Android app, with charts and full breakdown tables.

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⚡ Barns to Ares: the quick answer

1 b = 1 × 10⁻³⁰ a 1 barn equals 1 × 10⁻³⁰ ares

To convert barns to ares, multiply the value by 1 × 10⁻³⁰. To go the other way, multiply ares by 1 × 10³⁰ to get barns.

↔ Convert ares to barns instead

🧮 Formula

Barns to Ares
a = b × 1 × 10⁻³⁰
Ares to Barns
b = a × 1 × 10³⁰

Where

  • b = the area in barns
  • a = the area in ares
Every unit here is defined by its area in square meters, so the conversion factor is (square meters per barn) ÷ (square meters per are).

📊 Barns to Ares conversion table

Barns (b)Ares (a)
1 b1 × 10⁻³⁰ a
2 b2 × 10⁻³⁰ a
5 b5 × 10⁻³⁰ a
10 b1 × 10⁻²⁹ a
20 b2 × 10⁻²⁹ a
50 b5 × 10⁻²⁹ a
100 b1 × 10⁻²⁸ a
500 b5 × 10⁻²⁸ a
1,000 b1 × 10⁻²⁷ a

✏️ Worked examples

Convert 25 barns to ares

25 b × 1 × 10⁻³⁰ = 2.5 × 10⁻²⁹ a

Try this example →

Convert 250 barns to ares

250 b × 1 × 10⁻³⁰ = 2.5 × 10⁻²⁸ a

Try this example →

📘 About these units

Barn (b). A barn is 10⁻²⁸ m², the unit particle physicists use for nuclear cross-sections.

Are (a). An are is 100 square meters (10 m × 10 m), used for plot sizes in much of Europe and in Russia, where it is called a sotka.

❓ Frequently asked questions

How many ares are in one barn?

There are 1 × 10⁻³⁰ ares in one barn.

How do I convert barns to ares?

Multiply the number of barns by 1 × 10⁻³⁰. For example, 10 barns equal 1 × 10⁻²⁹ ares.

How many barns are in one are?

One are equals 1 × 10³⁰ barns.

What people are saying
★★★★★
Anonymous · 04 Oct 2026