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Temperature Converter

Convert temperatures among Celsius, Fahrenheit, Kelvin, and Rankine with an all-scales comparison.

Temperature

°C → °F

68 °F

20 °C

All scales

ScaleValue
Celsius (°C)20
Fahrenheit (°F)68
Kelvin (K)293.15
Rankine (°R)527.67

How it works

Temperature converters translate readings among Celsius, Fahrenheit, Kelvin, and Rankine for weather, cooking, science, and engineering contexts.

Internally, conversions route through Kelvin—an absolute scale—so round trips between Celsius and Fahrenheit stay consistent.

Celsius and Fahrenheit are everyday weather and cooking scales. Kelvin is standard in science. Rankine is an absolute scale sometimes used in US engineering texts.

Enter any one scale to populate the others. The all-scales view helps when a recipe, sensor, or textbook mixes unit systems.

Absolute zero is 0 K. Negative Kelvin values are not physically meaningful in ordinary thermodynamics—use the converter for valid real-world readings.

Frequently asked questions

Why use Kelvin as an intermediate step?
Kelvin is an absolute scale. Routing through it avoids rounding quirks when jumping between Celsius and Fahrenheit.
How do I convert oven temperatures?
Enter the recipe’s unit (often °F or °C) and read the other scale. Fan/convection adjustments are recipe-specific and separate from unit conversion.
What is Rankine used for?
Rankine is an absolute temperature scale with Fahrenheit-sized degrees, seen in some engineering references.
Is 0°C the same as 32°F?
Yes—those are the freezing point of water at standard conditions on the two everyday scales.

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