SpeedFeet per Second to Kilometers per Hour

Feet per Second to Kilometers per Hour

Snapshot

1 Foot per Second equals 1.09728 Kilometers per Hour. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.

Reference basis: This conversion uses fixed meters-per-second-based speed definitions.
Example: For 0.5 Feet per Second, the result equals 0.54864 Kilometers per Hour.
Use the reverse page if you need the opposite direction with the same basis.

Use the interactive calculator below for custom values and the common-value table for quick checks.

Interactive conversion

Converter Calculator

1.09728 Kilometers per Hour (km/h)

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Machine access

Available to apps and AI agents

Feet per Second to Kilometers per Hour can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The identifiers below select the same calculation as the calculator.

Machine-readable identifiers

Conversion family: speed
Source unit: foot_per_second
Target unit: kilometer_per_hour

The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "speed",
  "value": 1,
  "from": "foot_per_second",
  "to": "kilometer_per_hour"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "speed",
    "value": 1,
    "from": "foot_per_second",
    "to": "kilometer_per_hour",
    "result": {
      "raw": 1.09728,
      "display": "1.09728"
    },
    "canonicalPath": "/speed/feet-per-second-to-kilometers-per-hour/"
  }
}

Full API documentation

Explanation

Use this page when you want a direct feet per second to kilometers per hour conversion. Here, 1 foot per second equals 1.09728 kilometers per hour.

This is a cross-system speed conversion, so the calculator normalizes the value through meters per second and then applies the exact target-unit constant. This route is useful when translating speed values across SI, imperial, and nautical conventions so transport data, engineering calculations, and navigation references stay comparable.

This conversion is purely multiplicative because both units reduce through meters per second using fixed distance and time definitions with no offset.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Foot per Second = 1.09728 Kilometers per Hour (using fixed meters-per-second-based speed definitions).
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Feet per Second (ft/s)	Kilometers per Hour (km/h)
0.5	0.54864
1	1.09728
2	2.19456
5	5.4864
10	10.9728
20	21.9456
30	32.9184
60	65.8368
100	109.728
120	131.6736

Questions & answers

Frequently Asked Questions

What is 1 foot per second in kilometers per hour?

1 Foot per Second equals 1.09728 Kilometers per Hour on this page.

What conversion factor does this Feet per Second to Kilometers per Hour page use?

This route uses one fixed speed factor derived from exact distance and time definitions, so the direct answer, calculator, and common values table stay aligned.

Can I use decimal values for feet per second?

Yes. Decimal inputs use the same fixed factor, and the mirror Kilometers per Hour to Feet per Second page keeps the reverse direction aligned.