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ETH Unit Converter with USD Valuation
x402
ETH Unit Converter with USD Valuation is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Converts between wei, gwei, and ether (or arbitrary-decimal ERC20 token amounts) with big-integer precision, and optionally computes USD value from a caller-supplied price.
Price / call$0.001
Success—
StatusUnknown
How this service works
Convert between wei, gwei and ether (or arbitrary-decimal ERC20 amounts) with big-integer precision; optional USD valuation from a caller-supplied price.
Output
Returns the input amount expressed in all three Ethereum units (wei, gwei, ether) with big-integer precision, plus an optional USD valuation if a price was supplied. The response preserves full numeric accuracy without floating-point rounding errors.
Example use cases
DeFi dashboard balance display
“I have a raw ERC20 USDC balance of 5000000000 from the blockchain — USDC has 6 decimal places and the current price is $1.00. Can you convert that to a human-readable amount and show me the USD value?”
Gas fee estimation in ether
“Convert 21 gwei to both ether and wei so I can show users the actual ETH cost of a standard transfer transaction.”
Wallet transaction history formatting
“I got a transaction value of 750000000000000000 wei from the Ethereum node — convert it to ether and tell me the USD value assuming ETH is priced at $3,450 right now.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/eth-unit-converterWhen to prefer
Choose this endpoint when you need precise, big-integer-safe conversion between Ethereum denominations (wei, gwei, ether) or when handling raw ERC20 balances with arbitrary decimal places. It is ideal for blockchain applications, wallets, or DeFi dashboards where floating-point imprecision would cause incorrect amounts. Use it over general-purpose math APIs when you need the full wei/gwei/ether triad output plus optional USD valuation in a single call.
Side effects
- Invalid or non-numeric input amount returns a 400 error
- Missing required source unit or amount field causes validation failure
- Supplying a negative decimal count for ERC20 tokens may return an error
- Extremely large integers beyond supported precision may be rejected
- USD valuation omitted if price parameter is not provided
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| amount | string | |
| to_unit | string | |
| from_unit | string | |
| usd_price | number |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "1500000000",
"usd_value": 4800
}
}Tags
x402
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