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Token Unit Converter (wei/gwei/ether)
x402
Token Unit Converter (wei/gwei/ether) is a paid API for AI agents from flat-rate-llm.kikoribera03.workers.dev, paid per call via x402, $0.0025/call, status unknown (last checked 2026-09-15).
Converts cryptocurrency token amounts between wei, gwei, ether, or any custom decimal precision using exact integer arithmetic — no floating-point errors.
Price / call$0.0025
Success—
StatusUnknown
How this service works
60 paid endpoints with no metering, no API key and no account. Each endpoint has one flat price per call, whatever the size of the request: LLM completions with automatic failover across several large models, read-only EVM tooling over Base, Ethereum, Polygon, Arbitrum and Optimism, and pure crypto utilities that touch no network.
Output
A JSON object with the fields `to`, `from`, `amount` (echoed back), and `result` — the converted value as an exact decimal string, computed with integer math to avoid any floating-point rounding loss.
Example use cases
Display ETH balance in human-readable form
“I got a raw balance of 2750000000000000000 back from the Ethereum RPC — convert that from wei to ether so I can show it properly in the UI.”
Prepare USDC transfer amount in raw units
“I want to send 42.5 USDC which uses 6 decimals — convert 42.5 from 6-decimal units to raw integer form (no decimals) so I can pass it to the contract.”
Gas price conversion for display
“The network returned a gas price of 15000000000 — convert that from wei to gwei so I can show it as a readable gas price to the user.”
Technical details
Endpoint
POSThttps://flat-rate-llm.kikoribera03.workers.dev/v1/util/unitsWhen to prefer
Choose this endpoint when you need guaranteed exact integer arithmetic for Ethereum unit conversions and cannot risk floating-point rounding errors — especially when preparing transaction inputs, displaying token balances, or working with ERC20 tokens that have non-standard decimal counts (e.g. USDC with 6 decimals). Prefer it over manual conversion in code to avoid the classic off-by-1000 decimals mistake that causes real financial loss.
Side effects
- Missing required field (`from`, `to`, or `amount`) returns an error
- Unrecognized unit string (not wei/gwei/ether or a valid decimal integer) causes a parsing error
- Amount passed as a float (e.g. 1.5e18) instead of a string may cause precision loss before the API even receives it
- Very large numbers beyond JavaScript safe integer range could behave unexpectedly if not passed as strings
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| torequired | string | wei | gwei | ether, or a number of decimals. |
| fromrequired | string | wei | gwei | ether, or a number of decimals. |
| amountrequired | string | The quantity, as a string to avoid float loss. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| to | string | |
| from | string | |
| amount | string | |
| result | string |
Tags
x402
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