Specific Heat CapacityBtu per Pound Degree Fahrenheit to Joules per Kilogram Kelvin

BTU per pound-degree Fahrenheit to Joules per kilogram-kelvin

Methodology·How We Verify

Snapshot

1 BTU per pound-degree Fahrenheit equals 4,186.8 Joules per kilogram-kelvin.

Reference basis: This conversion uses a fixed factor based on physics reference unit model.
Example: For 0.1 BTU per pound-degree Fahrenheit, the result equals 418.68 Joules per kilogram-kelvin.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

4,186.8 Joules per kilogram-kelvin (J/(kg·K))

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API and AI agent access

BTU per pound-degree Fahrenheit to Joules per kilogram-kelvin.

Machine-readable identifiers

Conversion family: specific-heat-capacity
Source unit: btu_per_pound_degree_fahrenheit
Target unit: joules_per_kilogram_kelvin

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "specific-heat-capacity",
  "value": 1,
  "from": "btu_per_pound_degree_fahrenheit",
  "to": "joules_per_kilogram_kelvin"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "specific-heat-capacity",
    "value": 1,
    "from": "btu_per_pound_degree_fahrenheit",
    "to": "joules_per_kilogram_kelvin",
    "result": {
      "raw": 4186.8,
      "display": "4,186.8"
    },
    "canonicalPath": "/specific-heat-capacity/btu-per-pound-degree-fahrenheit-to-joules-per-kilogram-kelvin/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Multiply by 4186.8 because 1 BTU/(lb·°F) = 4186.8 J/(kg·K) and 1 J/(kg·K) = 1 J/(kg·K).

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 BTU per pound-degree Fahrenheit = 4,186.8 Joules per kilogram-kelvin.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

BTU per pound-degree Fahrenheit (BTU/(lb·°F))	Joules per kilogram-kelvin (J/(kg·K))
0.1	418.68
1/2	2,093.4
1	4,186.8
2	8,373.6
4	16,747.2
10	41,868
100	418,680
1000	4,186,800

Questions & answers

Frequently Asked Questions

What result does this BTU per pound-degree Fahrenheit to Joules per kilogram-kelvin page give for an input of 1?

For an input of 1 BTU per pound-degree Fahrenheit, this page gives 4,186.8 Joules per kilogram-kelvin.

Does this BTU per pound-degree Fahrenheit to Joules per kilogram-kelvin page use the fixed BTU, pound, and Fahrenheit-interval relationships?

Yes. BTU per pound-degree Fahrenheit routes use fixed energy, mass, and temperature-interval relationships through one joules-per-kilogram-kelvin normalization path, so US and SI thermal-property values stay aligned across the page.

When would I convert btu per pound-degree fahrenheit to joules per kilogram-kelvin?

This route is useful when comparing SI thermal property data with US engineering or HVAC references that report specific heat in BTU per pound per degree Fahrenheit.

How do I reverse BTU per pound-degree Fahrenheit to Joules per kilogram-kelvin?

Use the mirror Joules per kilogram-kelvin to BTU per pound-degree Fahrenheit route; it applies the inverse relationship with the same specific-heat-capacity assumptions.