Wei Converter

WHAT IT DOES

Wei Converter is a simple yet precise tool for converting between Ethereum denominations, with a focus on Wei (the smallest unit). Enter any integer amount in Wei, and the tool instantly converts to Ether (with full precision), Gwei, and displays the input value in Wei. Quick buttons for 1 ETH, 1 Gwei, and 1 Wei allow fast testing. This is essential for developers working with Ethereum transactions, users understanding gas costs, or anyone needing to convert between Ether units with high precision.

HOW TO USE

Connect your wallet using the BGWallet bridge (MetaMask or any Web3 wallet). Enter the amount in Wei (integer only) in the input field. Click "Convert" to perform the conversion. The tool displays the Wei input and a grid showing the converted values in Ether (short and full precision), Gwei, and the original Wei input. Use the quick buttons: "1 ETH" to convert 1 ETH (10^18 Wei), "1 Gwei" to convert 1 Gwei (10^9 Wei), or "1 Wei" to convert the smallest unit (1 Wei). This is useful for quickly testing conversions without manual input.

TECHNICAL MECHANISM

The tool uses ethers.js BigNumber utilities for precise conversion. It parses the input as an integer string and creates a BigNumber using ethers.BigNumber.from(). It then converts to Gwei by dividing by 10^9, and to Ether using ethers.utils.formatEther() which handles the 10^18 conversion with full precision. The Ether value is displayed with 18 decimal places (full precision) and 6 decimal places (short format). The Gwei is displayed as an integer. The Wei input is displayed as a string to preserve the full number. All conversions use BigNumber arithmetic to avoid floating-point errors. The tool handles large numbers (up to the maximum Wei value) without loss of precision. All operations are performed client-side — no data is stored or transmitted. The tool is read-only and does not sign any transactions.

WHAT IT CANNOT SEE

The tool cannot convert between non-EVM denominations (e.g., SOL, BTC) — only Ether, Gwei, and Wei are supported. It cannot provide historical conversion rates — the tool only uses the current input. It cannot handle gas price conversions without additional data — gas prices are not converted. It cannot convert units for tokens with different decimals without additional configuration — the tool is designed for Ether only. It cannot automatically detect the current ETH price. It cannot validate if the Wei amount is within the valid range for Ethereum (though the BigNumber handles arbitrary sizes). The tool is read-only and does not sign any transactions.

PLEASE NOTE

This tool works exclusively with EVM-compatible chains for the wallet connection, but the conversion itself is chain-agnostic. Solana, Tron, Starknet, SUI, TON, Aptos, Bitcoin, Cosmos, and XRP are not supported for wallet connection but the conversion works regardless. The tool uses BigNumber for precision — no floating-point errors. The tool does not store any data — all operations are performed client-side. The tool is provided as-is with no warranty or liability. Always verify conversions with official sources when dealing with real funds.