Is the Temperature Converter free?

Yes — the Temperature Converter is completely free, with no account, subscription, signup, or usage limits.

Is my data uploaded or stored?

No. The Temperature Converter processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.

Does the Temperature Converter work offline?

Yes. Once the page has finished loading, the Temperature Converter works without an internet connection.

Which browsers does the Temperature Converter work in?

The Temperature Converter works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.

Does this free temperature converter handle negative values?

Yes — it correctly handles all negative temperatures including values below absolute zero (which will be flagged as physically impossible on the Kelvin and Rankine scales).

What is absolute zero in Fahrenheit?

Absolute zero is 0 K = −273.15 °C = −459.67 °F. You can verify this directly in the All Conversions table.

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin temperatures.

From

Celsius (°C)

33.8

Fahrenheit (°F)

1 °C = 33.8 °F

All Conversions for 1 °C

Fahrenheit	°F	33.8
Kelvin	K	274.15
Rankine	°R	493.47

Free browser-based tool · Runs 100% on your device · Last updated July 7, 2026

What is the Temperature Converter?

The free Temperature Converter supports all four major temperature scales: Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R). Choose the source scale from the From dropdown, enter any temperature value, and see the converted temperature in the To dropdown immediately. The All Conversions table shows all four scales at once — perfect for scientific calculations or quick everyday checks.

→ Converting Celsius to Fahrenheit for weather reports or US-format recipes
→ Converting Celsius to Kelvin for chemistry or physics problems
→ Converting Fahrenheit to Celsius for international travel
→ Verifying Rankine values for thermodynamic engineering calculations

How to Use the Temperature Converter

1 Select the source scale (e.g. °C) from the From dropdown.
2 Enter the temperature value in the input field.
3 Choose the target scale (e.g. °F) from the To dropdown.
4 The converted temperature appears instantly in the result panel.
5 Click ⇄ Swap to reverse the direction.
6 View all four scales in the All Conversions table.

Key Features

🌡️
All four temperature scales

Celsius, Fahrenheit, Kelvin, and Rankine in one free converter.
❄️
Handles negative values

Correctly converts negative temperatures including values near absolute zero.
⚡
Real-time conversion

Results update on every keystroke.
📊
All Conversions table

Shows all four scales simultaneously for instant cross-reference.
🔒
Works offline

100% browser-based — no internet required after initial page load.

Example Usage

Example Input

From: °C · Value: 100 · To: °F

Example Output

100 °C = 212 °F

Frequently Asked Questions about the Temperature Converter

What is the Temperature Converter?: The Temperature Converter is a free online tool that lets you convert between Celsius, Fahrenheit, and Kelvin temperatures. It runs entirely in your browser, so there is nothing to install and nothing is uploaded to a server.
Is the Temperature Converter free?: Yes — the Temperature Converter is completely free, with no account, subscription, signup, or usage limits.
Is my data uploaded or stored?: No. The Temperature Converter processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.
Does the Temperature Converter work offline?: Yes. Once the page has finished loading, the Temperature Converter works without an internet connection.
Which browsers does the Temperature Converter work in?: The Temperature Converter works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.
Does this free temperature converter handle negative values?: Yes — it correctly handles all negative temperatures including values below absolute zero (which will be flagged as physically impossible on the Kelvin and Rankine scales).
What is absolute zero in Fahrenheit?: Absolute zero is 0 K = −273.15 °C = −459.67 °F. You can verify this directly in the All Conversions table.