Historical Temperature ScalesKelvin to Rankine

Kelvin to Rankine

Methodology·How We Verify

Snapshot

1 Kelvin equals 1.8 Rankine.

Reference basis: This conversion uses a scale-and-offset equation (°R = K * (9/5)).
Example: For 20 Kelvin, the converted value equals 36 Rankine.

Interactive conversion

Converter Calculator

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

1.8 Rankine (°R)

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API and AI agent access

Kelvin to Rankine.

Machine-readable identifiers

Conversion family: historical-temperature-scales
Source unit: kelvin
Target unit: rankine

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": "historical-temperature-scales",
  "value": 1,
  "from": "kelvin",
  "to": "rankine"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "historical-temperature-scales",
    "value": 1,
    "from": "kelvin",
    "to": "rankine",
    "result": {
      "raw": 1.8,
      "display": "1.8"
    },
    "canonicalPath": "/historical-temperature-scales/kelvin-to-rankine/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

Use the exact linear relation between absolute scales: multiply Kelvin by 9/5.

Method & Reference

Method basis: exact affine formula (scale + offset) shown in Snapshot.
Equation reference: °R = K * (9/5)
Consistency rule: forward and reverse pages use inverse equations to preserve scale reference points.

Reference note

This Kelvin to Rankine page uses explicit historical scale equations (scale + offset), not a simple multiplier.

Historical temperature scales are reconstructed from standard reference definitions.
Forward and reverse directions use inverse formulas, so each direction has its own dedicated page.

Common Conversion Values

Kelvin (K)	Rankine (°R)
-40	—
0	0
20	36
32	57.6
80	144
100	180
273.15	491.67
491.67	885.006

Questions & answers

Frequently Asked Questions

What is 1 Kelvin in Rankine?

1 Kelvin equals 1.8 Rankine on this page.

What equation does this Kelvin to Rankine page use?

This page uses °R = K x (9/5), and the same equation drives the direct answer, calculator, table, and FAQ.

Is there a reverse page for Rankine to Kelvin?

Yes. The reverse direction has its own page at °R to K, where the inverse equation is used so the mirror route stays numerically aligned.