Token Decimals Converter

Q: Why does my transfer show as a huge number?

You are looking at the raw value. Divide by 10decimals: a USDT transfer of 25000000 is 25 USDT; an ETH-like token transfer of 1000000000000000000 is 1 token.

Q: Can I use this for EIP-681 QR codes?

Yes. The uint256 parameter in an EIP-681 token transfer must be the raw integer. Enter the human amount here, copy the raw value, or simply use the USDT ERC-20 QR generator, which does this automatically.

Q: Why do most ERC-20 tokens use 18 decimals?

Because ETH itself has 18 (1 ETH = 1018 wei) and early token contracts copied that convention. Stablecoins chose 6 to mirror cent-level accounting with headroom, and wrapped Bitcoin tokens use 8 to match satoshis.

What is a token decimals converter?

A token decimals converter translates between the raw integer a token contract stores and the human amount a wallet shows, using the token's decimals value: amount = raw ÷ 10^decimals. ERC-20 and TRC-20 contracts expose it through decimals(); an SPL mint stores it in the mint account. USDT and USDC use 6, WBTC 8, and ETH-like tokens 18.

Common token decimals

Token	Decimals	1 token as raw integer
USDT (Ethereum, Tron, Solana, Polygon, Arbitrum)	6	1,000,000
USDC (all major chains)	6	1,000,000
USDT on BNB Smart Chain (Binance-Peg)	18	1,000,000,000,000,000,000
WBTC, cbBTC	8	100,000,000
ETH, WETH, DAI, LINK, UNI, AAVE	18	1,000,000,000,000,000,000
SOL and most SPL tokens	9	1,000,000,000
GUSD	2	100

How the conversion works

human = raw ÷ 10^decimals and raw = human × 10^decimals. The catch is precision: 18-decimal values exceed what a floating-point number can represent, so this page uses arbitrary-precision integers. Entering more decimal places than the token supports is rejected, because the chain cannot represent that amount.

Worked example

An ERC-20 Transfer event shows value = 2500000. If the token is USDC (6 decimals) that is 2.5 USDC. If the same number came from a DAI transfer (18 decimals) it would be 0.0000000000025 DAI, a dust amount. Going the other way, to send 0.0025 WBTC (8 decimals) the argument to transfer must be 0.0025 × 10⁸ = 250,000, and sending 1 LINK (18 decimals) requires 1,000,000,000,000,000,000.

Common mistakes

Assuming 18. Hard-coding 10¹⁸ turns a 100 USDC payment into 0.0000000001 USDC. Read decimals() from the contract.
Trusting the symbol. Bridged tokens with the same ticker can use different decimals on different chains. Check the contract you are actually interacting with.
Rounding before multiplying. Convert the human amount to the raw integer first, then do arithmetic in integers; floating point can produce 2499999.9999 instead of 2500000.

In code

ethers.js: ethers.parseUnits("1.5", 6) → 1500000n; ethers.formatUnits(1500000n, 6) → "1.5".
web3.py: int(Decimal("1.5") * 10**6); avoid float.
Solana web3.js: amounts in createTransferInstruction are raw integers; multiply by 10 ** mint.decimals using BigInt.

For native coins see the Ethereum unit converter, satoshi converter, lamports converter and sun converter.

Frequently asked questions

What are token decimals?

A number stored in the token contract that says how many digits of the raw integer are fractional. USDT has 6 decimals, so a raw balance of 1,500,000 is 1.5 USDT. ETH and most ERC-20 tokens use 18.

Where do I find a token's decimals?

On the token page of Etherscan, Tronscan or Solscan, or by calling decimals() on an ERC-20 / TRC-20 contract. For SPL tokens it is in the mint account.

Why does my transfer show as a huge number?

You are looking at the raw value. Divide by 10^decimals: a USDT transfer of 25000000 is 25 USDT; an ETH-like token transfer of 1000000000000000000 is 1 token.

Can I use this for EIP-681 QR codes?

Yes. The uint256 parameter in an EIP-681 token transfer must be the raw integer. Enter the human amount here, copy the raw value, or simply use the USDT ERC-20 QR generator, which does this automatically.

Why do most ERC-20 tokens use 18 decimals?

Because ETH itself has 18 (1 ETH = 10¹⁸ wei) and early token contracts copied that convention. Stablecoins chose 6 to mirror cent-level accounting with headroom, and wrapped Bitcoin tokens use 8 to match satoshis.

Are USDT decimals the same on every chain?

USDT uses 6 on Ethereum, Tron, Solana, Polygon and most chains, but some bridged versions differ (for example 18 on BNB Smart Chain). Always check the specific contract.