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Unit Converter API (x402node)
x402
Unit Converter API (x402node) is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.0022/call, status unknown (last checked 2026-09-14).
Converts values between common units of measurement including length, weight, temperature, area, volume, speed, data size, and time
Price / call$0.0022
Success—
StatusUnknown
How this service works
Unit converter, measurement conversion, metric imperial, length weight temperature speed area volume, kilometer to mile, kg to pound, celsius to fahrenheit, inch to cm, mph to kmh, bytes to gigabytes. Convert between common units of measurement: length, weight, temperature, area, volume, speed, data size, time. Accepts payment on Base or Solana — either network works.
Output
Returns the converted numeric value in the target unit, given an input value and source/target unit pair across categories like length, weight, temperature, area, volume, speed, data size, and time.
Example use cases
Example prompt
“Convert 5 kilometers to miles for me.”
Technical details
Endpoint
GEThttps://api.x402node.dev/math/unit-convertWhen to prefer
Use this endpoint when an AI agent needs to perform unit conversions programmatically across a wide range of measurement domains (length, weight, temperature, speed, volume, area, data size, time) without relying on in-context math; ideal for pipelines where accurate, typed conversion results are required rather than approximate in-model estimation.
Side effects
- Unsupported unit type returns an error (e.g. converting between incompatible categories like length to weight)
- Invalid numeric input returns a validation error
- Unrecognized unit abbreviation or name returns an error
- Missing required fields (value, fromUnit, toUnit) returns a 400 bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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