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, $0.005/call, status unknown (last checked 2026-10-27).

Converts cryptocurrency token amounts between wei, gwei, ether, or any custom decimal precision using exact integer arithmetic — no floating-point errors.

Price / call$0.005

Seller volume →—

Success—

StatusUnknown

How this service works

Converts between wei, gwei, ether and any token decimals using exact integer maths - no floating point, no silent rounding. The mistake that costs real money is being off by a thousand on decimals.

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

GEThttps://flat-rate-llm.kikoribera03.workers.dev/v1/util/units?utm_source=zero.xyz

When 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

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