What Is Decimals (Token Precision)?
Definition
Decimals define how divisible a token is — a token with 9 decimals (standard for Solana SPL) can be divided into 0.000000001 units, while 18 decimals (ERC-20 standard) allows even finer division.
Decimals determine the smallest unit of your token. Just like a dollar divides into 100 cents (2 decimals), crypto tokens divide into much smaller units.
- Solana SPL tokens — 9 decimals is the standard (same as SOL itself). 1 token = 1,000,000,000 smallest units.
- Ethereum ERC-20 — 18 decimals is the standard (same as ETH). 1 token = 1,000,000,000,000,000,000 smallest units.
- Base ERC-20 — same as Ethereum: 18 decimals.
- Lower decimals (0-6) — common for stablecoins or tokens that represent whole units (USDC uses 6 decimals)
- Standard decimals (9 or 18) — recommended for most tokens. Ensures compatibility with DEXes, wallets, and DeFi protocols.
- Too many decimals with large supply — can cause display issues. 1 trillion tokens with 18 decimals requires very precise math.
CoinDevTools uses 9 decimals as the default for Solana and 18 for Ethereum/Base — matching the native chain conventions.
Try it yourself
No code required. Connect a wallet and get started in minutes.
Set Your Token DecimalsRelated Terms
SPL Token
An SPL token is the standard fungible token format on the Solana blockchain, equivalent to ERC-20 on Ethereum.
ERC-20 Token
ERC-20 is the most widely used token standard on Ethereum and EVM-compatible chains, defining how fungible tokens are created and transferred.
Tokenomics
Tokenomics is the economic design of a cryptocurrency token — covering supply, distribution, utility, incentive mechanisms, and how these factors affect the token's value over time.