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To convert hexadecimal (base-16) to decimal (base-10), multiply each hex digit by 16 raised to its positional power (0-indexed from right to left) and sum the products. For example, for hex 1A3F: (1 × 16³) + (10 × 16²) + (3 × 16¹) + (15 × 16⁰) = 4096 + 2560 + 48 + 15 = 6719.
No. In hexadecimal, decimal 10 is represented by the single digit 'A'. The hex string '10' equals decimal 16 because the leading '1' occupies the 16¹ place value (1 × 16 + 0 × 1 = 16).
Hexadecimal 'ffffffff' (or 0xFFFFFFFF) equals 4,294,967,295 in decimal. This value is 2³² − 1, representing the maximum limit for a 32-bit unsigned integer (uint32).
Raw hex strings are parsed as unsigned integers by default unless a specific bit-length (such as 8-bit, 16-bit, 32-bit, or 64-bit) is applied. In two's complement representation, hex 'FFFFFFFF' evaluates to -1 for a 32-bit signed integer, but 4,294,967,295 when evaluated as unsigned.
The 0x prefix indicates to compilers and code parsers (in JavaScript, Python, C, Solidity, etc.) that the following sequence of characters is a hexadecimal literal rather than decimal.
The Ethereum JSON-RPC specification requires all numerical values (block numbers, gas prices, Wei amounts) to be returned as hex strings prefixed with 0x to prevent integer precision loss in standard JSON parsers.
Yes. Powered by JavaScript's native BigInt data type, this converter processes arbitrarily large hexadecimal numbers — including 256-bit Ethereum smart contract values — with exact precision.
Wei, Gwei, and Ether are denominations of ETH. Wei is the smallest unit (1 ETH = 10¹⁸ Wei), Gwei is 10⁹ Wei (used for gas fees), and Ether is the standard unit displayed in wallets and exchanges.