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Foot Per Second to Kilometer Per Hour Converter
x402
Foot Per Second to Kilometer Per Hour 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 2026-10-13).
Converts a speed value from feet per second (ft/s) to kilometers per hour (km/h) with IEEE-754 double precision.
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 (foot-per-second), the converted value in kilometer-per-hour, the dimension (speed), and a precision note (IEEE-754 double). Example: {from: 'foot-per-second', to: 'kilometer-per-hour', value: 123.45, converted: 135.459216, dimension: 'speed', precision: 'IEEE-754 double'}.
Example use cases
Running speed unit conversion
“My treadmill shows my pace as 12.5 feet per second — can you convert that to kilometers per hour?”
Wind speed reporting
“The weather station reports wind at 45 feet per second. What is that in kilometers per hour?”
Vehicle speed comparison
“A car is traveling at 100 feet per second. Convert that to km/h so I can compare it to European speed limits.”
Technical details
Endpoint
GEThttps://x402-agent.kariguetoazul.workers.dev/api/units/speed/foot-per-second-to-kilometer-per-hour?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, precise, pay-per-call speed conversion from feet per second to kilometers per hour, especially in automated agent workflows where you want IEEE-754 double precision output without managing your own conversion logic.
Side effects
- Missing required 'value' query parameter returns an error
- Negative value rejected (minimum is 0)
- Value exceeding 1e+100 rejected (maximum enforced by schema)
- Non-numeric value for 'value' parameter causes validation failure
- Payment not provided or insufficient USDC balance results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "kilometer-per-hour",
"from": "foot-per-second",
"value": 123.45,
"converted": 135.459216,
"dimension": "speed",
"precision": "IEEE-754 double"
}
}Tags
x402
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