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Ethereum Unit Converter (24K Labs)
x402
Ethereum Unit Converter (24K Labs) is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Converts amounts between Ethereum denominations (wei, kwei, mwei, gwei, szabo, finney, ether) using exact integer/decimal arithmetic with no floating-point errors.
Price / call$0.002
Success—
StatusUnknown
How this service works
Convert amounts between Ethereum denominations (wei, kwei, mwei, gwei, szabo, finney, ether) with exact integer/decimal math -- no float error.
Output
Returns the converted amount in the target Ethereum denomination as an exact value (using integer or high-precision decimal math), along with the source unit, target unit, and the original input amount — no floating-point rounding errors.
Example use cases
Display gas price in gwei
“I have a raw gas price of 21000000000 wei from the Ethereum node — convert it to gwei so I can show it in the UI.”
Wallet balance display in ether
“I got back a balance of 4500000000000000000 wei from the Ethereum RPC call — what is that in ether, exactly?”
DeFi transaction fee calculation
“Convert 0.005 ether to gwei so I can set the max fee for this transaction without any rounding errors.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/eth-unit-convertWhen to prefer
Choose this endpoint when you need precise, lossless Ethereum unit conversion — especially when float rounding errors would cause issues, such as in financial calculations, smart contract interactions, gas fee estimation, or displaying wallet balances. Prefer this over ad-hoc JavaScript/Python float math which can produce subtle rounding errors with large wei values.
Side effects
- Invalid denomination name returns an error indicating unsupported unit
- Non-numeric amount input returns a validation error
- Missing required fields (amount or units) returns a 400-level error
- Negative or zero amounts may return a validation error depending on implementation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| from | string | |
| value | string |
Output
Schema · Response
{
"type": "json",
"example": {
"wei": "1500000000000000000",
"result": "1500000000"
}
}Tags
x402
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