Temperature Converter
Temperature measures how hot or cold something is. Because Celsius, Fahrenheit, and Kelvin have different zero points, conversions are not simple multiplications — they add or subtract an offset. Kelvin is the SI base unit and starts at absolute zero. These conversions treat values as absolute temperatures, not temperature differences.
8 units supported Base unit kelvin (K)
About temperature conversion
Temperature conversion is commonly needed when cooking, weather, medical readings, and science experiments. Because the scales have different zero points, you add or subtract an offset — you cannot simply multiply.
Popular conversions
Convert Celsius to other temperature units
1 °C expressed in every other temperature unit on this site.
- Celsius °C 1
- Fahrenheit °F 33.8
- Kelvin K 274.15
- Rankine °R 493.47
- Réaumur °Ré 0.8
- Delisle °De 148.5
- Newton Scale °N 0.33
- Rømer °Rø 8.025
Complete list of temperature units
All 8 units this converter supports, each stated against the kelvin (K).
| Unit | Symbol | System | In kelvin | Conversions |
|---|---|---|---|---|
| Celsius | °C | Metric | 1 °C = 274.15 K (non-linear scale) | celsius to fahrenheitcelsius to kelvin |
| Fahrenheit | °F | US | 1 °F = 255.92778 K (non-linear scale) | fahrenheit to celsiusfahrenheit to kelvin |
| Kelvin | K | SI | base unit (K) | kelvin to celsiuskelvin to fahrenheit |
| Rankine | °R | Other | 1 °R = 0.55555556 K (non-linear scale) | rankine to celsius |
| Réaumur | °Ré | Other | 1 °Ré = 274.4 K (non-linear scale) | — |
| Delisle | °De | Other | 1 °De = 372.48333 K (non-linear scale) | — |
| Newton Scale | °N | Other | 1 °N = 276.1803 K (non-linear scale) | — |
| Rømer | °Rø | Other | 1 °Rø = 260.76905 K (non-linear scale) | — |
No unit in this category matches that search.
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Frequently asked questions
What is the base unit for temperature?
Temperature conversions on this site are calculated against the kelvin (K).
Which temperature units can I convert?
You can convert between 8 units, including celsius, fahrenheit, kelvin, rankine, and more.
Where is temperature conversion useful?
It is commonly needed when cooking, weather, medical readings, and science experiments.
Does this converter mix measurement systems?
The converter supports Metric, US, SI, Other units and keeps their exact definitions separate so results stay accurate.
Related categories
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.