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  5. Temperature Converter

Temperature Converter

Use the ConverterKey temperature converter for fast and accurate conversion between Celsius, Fahrenheit, and Kelvin scales.

Formula

(value × 9/5) + 32

SampleConverted
-40 °C-40 °F
0 °C32 °F
25 °C77 °F
100 °C212 °F
300 °C572 °F

About This Converter

Temperature Converter helps convert temperature readings across everyday, scientific, and technical scales in one place. It is useful when you need to compare more than one unit, check a value quickly, or prepare a measurement for forecasts, recipes, equipment settings, science work, and safety checks.

The default view starts with Celsius (°C) and converts to Fahrenheit (°F). You can change either unit from the dropdowns, which makes the page useful for weather, cooking, and lab or equipment readings.

Supported units

Popular units

  • Celsius [°C]
  • Fahrenheit [°F]
  • Kelvin [K]
Temperature units+
  • Celsius [°C]
  • Fahrenheit [°F]
  • Kelvin [K]

Direct conversion pages

Open focused conversion pages for the most useful temperature pairs.

celsius to fahrenheitcelsius to kelvinfahrenheit to celsiusfahrenheit to kelvinkelvin to celsiuskelvin to fahrenheit

Why Use This Temperature Converter

Use the ConverterKey temperature converter for fast and accurate conversion between Celsius, Fahrenheit, and Kelvin scales. This page is built for situations where the first unit you try may not be the final unit you need, so the calculator keeps the full supported list close to the input fields.

Convert Celsius, Fahrenheit, and Kelvin instantly. That makes it useful for weather, cooking, and lab or equipment readings, especially when a measurement needs to be reviewed, copied, or compared in a different unit system.

How This Converter Works

In its default state, the page applies the Celsius to Fahrenheit formula: (value × 9/5) + 32. If you change either dropdown, the displayed result and formula update for the selected pair.

For accurate results, keep extra decimal places while checking the value, then round the final answer only as much as your task requires.

Practical Usage Notes

The quick reference below uses the default °C to °F direction so you can compare common values before entering your own number.

This page is also useful when you are not yet sure which temperature pair you need. Try the value with different units, compare the results, and keep the unit label beside the final number so it remains clear when shared.

Quick Reference

InputConverted
-40 °C-40 °F
0 °C32 °F
25 °C77 °F
100 °C212 °F
300 °C572 °F

Related converters

Explore other temperature tools in this category.

  • Fahrenheit to Celsius Converter
  • Celsius to Kelvin Converter