Temperature Converter

Convert between Celsius (°C), Fahrenheit (°F) and Kelvin (K) instantly.

Instant result Runs in browser

Tip: Enter a value in any field and the others update automatically.

Quick reference

°C°FK
−273.15−459.670Absolute zero
032273.15Freezing point of water
2068293.15Room temperature
3798.6310.15Body temperature
100212373.15Boiling point of water

Formulas

°F = °C × 9/5 + 32
°C = (°F − 32) × 5/9
K = °C + 273.15

How to use?

  1. 1
    Enter a value Type a value into the Celsius, Fahrenheit, or Kelvin field.
  2. 2
    Auto conversion Other units update instantly. Alternatively, click Calculate to refresh.
  3. 3
    Copy or print Use the Copy button to copy all three values to clipboard.

FAQ

How do you convert Celsius to Fahrenheit?
Use °F = °C × 9/5 + 32. Example: 20°C → 20 × 9/5 + 32 = 68°F
Why can't Kelvin be negative?
Kelvin starts at absolute zero (−273.15°C). Going below this is physically impossible.
Which unit is more accurate?
All units are equally accurate — they just use different scales. Science prefers Kelvin; daily life uses Celsius or Fahrenheit.

What Are Temperature Units?

Three main units are used worldwide: Celsius (°C), Fahrenheit (°F), and Kelvin (K).

Which Unit Is Used Where?

  • Celsius (°C): Used in most countries for daily weather and medicine
  • Fahrenheit (°F): Preferred in the US, Cayman Islands, and Belize
  • Kelvin (K): Used in scientific calculations as the absolute temperature unit

Conversion Formulas

  • °C → °F: (°C × 9/5) + 32
  • °F → °C: (°F − 32) × 5/9
  • °C → K: °C + 273.15

How to use What Are Temperature Units?

Users search for What Are Temperature Units? because they want a fast answer: convert a value, generate a code, count text, create an identifier or check a formula. A good result starts with a clean input, uses the correct unit or format, and then shows an output that can be copied or reused. This page is designed for everyday searches such as “What Are Temperature Units? online”, “free What Are Temperature Units?” and “how to use What Are Temperature Units?”.

When this tool is useful

It is useful for students, developers, office work, content production, design tasks and quick calculations where opening a spreadsheet or installing software would be too slow. The article explains the common cases, the limits of the calculation and the best way to interpret the result. For technical tools, always verify mission-critical results in your own system before publishing or deploying them.

Accuracy and privacy

Most calculations run in the browser and are intended for practical guidance. Use consistent decimal separators, avoid mixing units, and check whether the result needs rounding. If you paste text, links or values into a browser tool, avoid sensitive information unless you understand how the page handles data.

Local examples and practical checks

For everyday searches, users often compare several tools before choosing one. A useful page should show what information is required, what the output means, and what common input errors can change the result. Check units, language-specific decimal separators, date order and copied text before relying on the output. If the tool is used for work, study or publishing, keep the original input with the result so it can be reviewed later.

Frequently asked questions

Is this enough for official use? For informal tasks, usually yes; for official documents, technical deployment, money, health or legal obligations, verify with an authoritative source. Does the result change by country? For converters and generators usually no, but finance, health and legal contexts can vary. What should I do if results differ? Check the formula, rounding and input format first.

How to use What Are Temperature Units?

Users search for What Are Temperature Units? because they want a fast answer: convert a value, generate a code, count text, create an identifier or check a formula. A good result starts with a clean input, uses the correct unit or format, and then shows an output that can be copied or reused. This page is designed for everyday searches such as “What Are Temperature Units? online”, “free What Are Temperature Units?” and “how to use What Are Temperature Units?”.

When this tool is useful

It is useful for students, developers, office work, content production, design tasks and quick calculations where opening a spreadsheet or installing software would be too slow. The article explains the common cases, the limits of the calculation and the best way to interpret the result. For technical tools, always verify mission-critical results in your own system before publishing or deploying them.

Accuracy and privacy

Most calculations run in the browser and are intended for practical guidance. Use consistent decimal separators, avoid mixing units, and check whether the result needs rounding. If you paste text, links or values into a browser tool, avoid sensitive information unless you understand how the page handles data.

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