Converted values (from {from})
| Unit | Value |
|---|
Temperature Converter
Convert temperature readings across Celsius, Fahrenheit, Kelvin, Rankine, and Reaumur.
Enter a temperature reading and choose its scale to view the equivalent values in every supported scale. Temperature units use different zero points, so a reading cannot always be converted by multiplying alone. This converter keeps the scale and result visible for practical comparison in settings, specifications, and technical notes. Explore more Unit Converters.
Quick links: Why scale offsets matter | Worked examples | Check your conversion
Convert between temperature scales.
Your feedback matters
Temperature Scales Use Different Zero Points
Celsius, Fahrenheit, Kelvin, Rankine, and Reaumur describe the same physical quantity with different reference points and interval sizes. That is why converting a temperature reading usually requires both an offset and a scale factor. The result should preserve the same condition even though its numeric value changes.
Kelvin and Rankine begin at absolute zero, while Celsius and Fahrenheit use different reference points. For example, $0^\circ C$ is $273.15\,K$, not $0\,K$. The conversion table above makes those relationships visible instead of leaving you to compare unrelated-looking numbers.
A Temperature Reading Is Not a Temperature Change
This converter is for absolute temperature readings. A temperature change is a difference between two readings, so its conversion follows different rules: a change of $1^\circ C$ equals a change of $1\,K$, while a change of $1^\circ F$ equals a change of $\frac{5}{9}^\circ C$. The Celsius and Fahrenheit offsets apply to readings, not to temperature differences.
Keep that distinction clear in reports, specifications, and technical calculations. Converting $20^\circ C$ as a reading is not the same operation as converting a temperature increase of $20^\circ C$.
Worked Temperature Conversions
Convert $37^\circ C$ to Fahrenheit
Celsius to Fahrenheit uses both a scale factor and an offset:
$$F = C \cdot \frac{9}{5} + 32$$
$$F = 37 \cdot \frac{9}{5} + 32 = 98.6$$
$$37^\circ C = 98.6^\circ F$$
The added $32$ is why a Celsius reading cannot be converted to Fahrenheit through multiplication alone.
Convert $300\,K$ to Celsius and Fahrenheit
Kelvin is useful when an absolute scale is needed. Convert to Celsius first, then use the Celsius-to-Fahrenheit relationship:
$$C = K - 273.15 = 300 - 273.15 = 26.85$$
$$F = C \cdot \frac{9}{5} + 32 = 26.85 \cdot \frac{9}{5} + 32 = 80.33$$
$$300\,K = 26.85^\circ C = 80.33^\circ F$$
The conversion table lets you compare the same reading across every supported scale without repeating the calculation one target at a time.
Check a Conversion Before You Use It
- Confirm that you are converting a temperature reading, not a temperature change.
- Check the source scale before interpreting the number or copying it into another system.
- Remember that physical temperature readings cannot fall below absolute zero: $0\,K$, $0^\circ Ra$, $-273.15^\circ C$, $-459.67^\circ F$, or $-218.52^\circ Re$.
- Keep the unit label with the result when you reuse it in a report, specification, or calculation.
- Round only after the conversion, especially when the value will be reused.
A quick scale check prevents the most common mistake: treating two different numeric readings as if they represented different physical temperatures. The unit label is part of the result, not decoration.
Missing a Temperature Conversion?
If you work with a temperature scale or reporting format that is not currently supported, suggest it for review as the UtilityKits converter library expands.
Suggest a New Converter