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Unit Convert – Ethereum/Token Unit Converter
x402
Unit Convert – Ethereum/Token Unit Converter is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-27).
Converts an amount between Ethereum denominations (wei, gwei, ether, etc.) or arbitrary token decimal scales with integer-exact precision.
Price / call$0.002
Success—
StatusUnknown
How this service works
Convert an amount between wei, kwei, mwei, gwei, szabo, finney and ether — or between any token decimals (pass a number like 6 for USDC). Integer-exact, no precision loss. Pass amount, from, to. Pure compute, sub-cent — the unit-conversion commodity agents call constantly when building transactions. Not financial advice.
Output
Returns the converted amount in the target unit as an integer-exact value, with no floating-point precision loss. Response includes the converted amount and likely metadata about the units used.
Example use cases
Gas fee display in ether
“I have a gas cost of 42000000000000 wei and need to show the user how much that is in ether — can you convert it exactly?”
USDC raw amount normalization
“My contract returned a raw USDC balance of 5000000 — convert that from 6 decimals to a human-readable amount so I can display it.”
Transaction value gwei to wei
“I want to send 2.5 gwei as a tip in my transaction, but the RPC call needs it in wei — what's the exact wei value?”
Technical details
Endpoint
GEThttps://402.com.tr/api/x402/unit-convert?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need integer-exact, lossless unit conversion between Ethereum denominations (wei through ether) or arbitrary ERC-20 token decimal scales. Prefer it over client-side arithmetic when working in sandboxed agent environments without native BigInt support, or when auditability of the conversion is important. Ideal for transaction building, DeFi workflows, and any situation where floating-point errors in ETH/token amounts are unacceptable.
Side effects
- Missing required 'amount' query parameter returns an error
- Unrecognized unit names for 'from' or 'to' return an error
- Non-numeric amount string causes a parse error
- Very large numbers may require special handling depending on response format
- Payment failure (insufficient USDC balance) blocks the request at the x402 layer
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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