What is a gwei and why is it used for gas prices?

Gwei (gigawei) equals 1,000,000,000 wei. Gas prices on Ethereum are typically quoted in gwei because wei values are very small. A typical gas price of 20 gwei = 20,000,000,000 wei = 0.00000002 ether.

What is the smallest Ethereum unit?

Wei is the smallest Ethereum unit, named after Wei Dai, the cryptographer. 1 Ether = 10^18 wei. All Ethereum transactions and smart contracts internally use wei for maximum precision.

Why does this tool use BigInt?

Ether amounts converted to wei can exceed JavaScript's safe integer limit (2^53 - 1 ≈ 9 quadrillion). BigInt handles arbitrary-precision integer arithmetic, ensuring accurate conversions for large or very small values without floating-point errors.

Gas Price Converter

Convert between Ethereum gas price units: wei, gwei, kwei, mwei, and ether.

Enter a gas price value and select the source unit (wei, gwei, or ether) to instantly see conversions across all Ethereum denomination units: wei, kwei (1e3), mwei (1e6), gwei (1e9), microether (1e12), milliether (1e15), and ether (1e18). Uses BigInt arithmetic for full precision on large wei values.

Wei20000000000

Kwei (Babbage)20000000

Mwei (Lovelace)20000

Gwei (Shannon)20

Microether (Szabo)0.02

Milliether (Finney)0.00002

Ether0.00000002

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FAQ

What is a gwei and why is it used for gas prices?: Gwei (gigawei) equals 1,000,000,000 wei. Gas prices on Ethereum are typically quoted in gwei because wei values are very small. A typical gas price of 20 gwei = 20,000,000,000 wei = 0.00000002 ether.
What is the smallest Ethereum unit?: Wei is the smallest Ethereum unit, named after Wei Dai, the cryptographer. 1 Ether = 10^18 wei. All Ethereum transactions and smart contracts internally use wei for maximum precision.
Why does this tool use BigInt?: Ether amounts converted to wei can exceed JavaScript's safe integer limit (2^53 - 1 ≈ 9 quadrillion). BigInt handles arbitrary-precision integer arithmetic, ensuring accurate conversions for large or very small values without floating-point errors.