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Toll402 Unit Converter
x402
Toll402 Unit Converter is a paid API for AI agents from toll402.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Converts a numeric value between units within a category (length, mass, volume, temperature, area, speed, or data) using an offline fixed conversion table.
Price / call$0.001
Success—
StatusUnknown
How this service works
Converts a numeric value between units within a category (length, mass, volume, temperature, area, speed, data) using a fixed offline conversion table. Pure computation, no network access.
Output
Returns the converted numeric value in the target unit, computed offline from a fixed conversion table. No external network calls are made.
Example use cases
Recipe unit conversion for cooking
“I need to convert 250 milliliters to fluid ounces — can you do that volume conversion for me?”
International distance calculation
“How many miles is 42.195 kilometers? Convert it in the length category.”
Data storage size comparison
“Convert 1.5 terabytes to gigabytes so I can see how much storage that is.”
Technical details
Endpoint
POSThttps://toll402.dev/v1/t/unit_convertWhen to prefer
Choose this endpoint when you need a fast, deterministic, offline unit conversion with no external dependencies. Ideal for lightweight agents that need to convert common measurement units without latency or rate-limit concerns. Prefer over web-search-based conversion when reproducibility and low cost matter.
Side effects
- Unsupported unit name for the specified category returns an error
- Incompatible from/to units within a category (e.g. mixing length and mass units) returns an error
- Missing required fields (value, category, from, to) returns a validation error
- Temperature conversions may fail if non-standard unit names are used
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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