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Kilometer-per-Hour to Foot-per-Second Converter
x402
Kilometer-per-Hour to Foot-per-Second Converter is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Converts a speed value from kilometers per hour (km/h) to feet per second (ft/s) using IEEE-754 double precision arithmetic.
Price / call$0.001
Success—
StatusUnknown
How this service works
Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.
Output
A JSON object containing the original value and unit (kilometer-per-hour), the converted result in foot-per-second as an IEEE-754 double, the dimension label ('speed'), and a precision note.
Example use cases
Aviation speed crosscheck
“I need to convert 250 km/h to feet per second — can you do that quickly?”
Physics homework unit conversion
“My physics problem gives speed as 95 kilometers per hour and I need it in feet per second. What's the converted value?”
Sports analytics speed normalization
“A sprinter's speed is measured at 36 km/h — what is that in feet per second so I can compare it to US athletic benchmarks?”
Technical details
Endpoint
GEThttps://x402-agent.kariguetoazul.workers.dev/api/units/speed/kilometer-per-hour-to-foot-per-second?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a simple, reliable, paid-per-call unit conversion from km/h to ft/s with IEEE-754 double precision and a structured JSON response. Useful in agentic pipelines where deterministic numeric output and a clear schema are required, especially when bridging metric and imperial speed measurements.
Side effects
- Missing required 'value' query parameter returns an error
- Negative speed values are rejected (minimum is 0)
- Values exceeding 1e+100 are rejected by schema validation
- Non-numeric input for value causes a validation error
- Network timeout if the Cloudflare Worker is unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "foot-per-second",
"from": "kilometer-per-hour",
"value": 123.45,
"converted": 112.5054680664917,
"dimension": "speed",
"precision": "IEEE-754 double"
}
}Tags
x402
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