Kelvin to Celsius K to °C

Convert Kelvin to Celsius (K to °C) instantly using this live, interactive converter. Whether you’re working with lab data, scientific constants, or temperature logs, this tool gives you fast and accurate °C results. You can customize the output by rounding values, showing the conversion formula, and keeping your input formatting.

How to Use:

Start by typing Kelvin values into the input box on the left. You can enter them one per line or paste a full list conversions happen automatically.

To use a file, click Choose File and select a plain-text file such as .txt, .csv, or .json. The contents load into the input box and the tool processes them immediately.

Under Options, toggle these settings:

• Round to 2 decimals: Keeps the output clean (enabled by default)
• Show formula used: Displays each calculation (e.g., 373.15K − 273.15 = 100.00°C)
• Keep empty lines: Preserves the spacing of blank lines in your input

Once your results appear, use Copy Output to copy them, Export Output to download them as a .txt file, or Clear All to reset everything.

What Kelvin to Celsius | K to °C can do:

The tool uses this formula for conversion:°C = K − 273.15

It converts each line individually. With rounding on, all results display with two decimal places. When formula mode is active, the output includes full equations like 273.15K − 273.15 = 0.00°C. If you keep the empty line option enabled, line spacing from the input stays intact.

The output flashes when changes occur, and a counter shows how many lines were processed.

Example:

Input:

273.15
373.15
0
310.15

Output (formula ON):

273.15K − 273.15 = 0.00°C
373.15K − 273.15 = 100.00°C
0K − 273.15 = -273.15°C
310.15K − 273.15 = 37.00°C

Common Use Cases:

The Kelvin to Celsius | K to °C converter is perfect for scientists, students, engineers, or anyone converting absolute temperatures to the Celsius scale. It’s ideal for thermodynamics, lab reports, or translating raw sensor data into readable formats.

Temperature Conversion Table:

The Kelvin to Celsius Table helps you quickly convert temperatures from the scientific Kelvin scale to the more familiar Celsius scale. It ranges from 200 K to 400 K, covering everything from deep cold to extreme heat. Each row shows the exact Celsius equivalent using the formula °C = K – 273.15. Whether you’re working in chemistry, meteorology, or physics, this conversion chart gives you clear, accurate results at a glance.

Useful Tools & Suggestions:

If you’re moving from Kelvin to Celsius, Celsius to Kelvin °C to K is handy when you need to flip the direction and go back the other way. And Convert Temperature °C °F K °R is useful if you’re juggling different unit types and want one tool to handle everything from everyday to scientific temperature conversions.