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Crypto tools·Unit Conversion

Crypto Unit Converter

Convert between Bitcoin units (BTC, mBTC, Satoshi) and Ethereum units (ETH, Gwei, Wei) instantly. Exact integer arithmetic for Wei. No signup required.

Added May 3, 2026 · Updated May 27, 2026

Quick examples

Input

Result

Enter a value for amount to see your result.

How it works

Convert between Bitcoin units (BTC, mBTC, Satoshi) and Ethereum units (ETH, Gwei, Wei). Handles the full precision of Wei using exact integer arithmetic.

Step by step

  1. 01Enter the amount you want to convert.
  2. 02Select the source unit (e.g. BTC or ETH).
  3. 03Select the target unit (e.g. Satoshi or Gwei).
  4. 04The result is shown with full precision. Bitcoin and Ethereum units are separate — cross-chain conversion is not supported.

Examples

1 BTC to Satoshi

One bitcoin equals exactly 100 million satoshi.

Inputs

Amount:
1
From:
BTC
To:
sat

Result

Converted amount:
100,000,000
Unit:
sat

1 ETH to Gwei

One ether equals 1 billion Gwei.

Inputs

Amount:
1
From:
ETH
To:
Gwei

Result

Converted amount:
1,000,000,000
Unit:
Gwei

Related guides

Frequently asked questions

How many Satoshi are in 1 BTC?

Exactly 100,000,000 satoshi (one hundred million). Satoshi is the smallest indivisible unit of Bitcoin.

How many Wei are in 1 ETH?

Exactly 1,000,000,000,000,000,000 Wei (10^18, or one quintillion). Wei is the smallest unit of Ether, named after Wei Dai.

What is Gwei used for?

Gwei (gigawei = 10^9 Wei) is the standard unit for expressing Ethereum gas prices. A gas price of '20 Gwei' means 20 × 10^9 = 0.00000002 ETH per unit of gas.

Can I convert BTC to ETH here?

No. This tool converts between units within the same blockchain (e.g. BTC ↔ Satoshi, or ETH ↔ Gwei). Converting BTC to ETH requires a market price and belongs in a currency converter.