Celsius Converter

Celsius:
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Free Online Temperature Conversion Calculator

DigiSadhan’s Temperature Converter is a free online tool for converting temperatures between Celsius (°C), Fahrenheit (°F), Kelvin (K), Rankine (°R), Newton (°N), Delisle (°De), Réaumur (°Ré) and Rømer (°Rø).

Instead of calculating each conversion manually, enter a temperature, select the source and target scales, and get the converted value instantly.

This calculator is useful for:

• Students and teachers
• Physics and chemistry calculations
• Engineering
• Scientific research
• Weather and climate information
• Cooking and food preparation
• Laboratory work
• Engineering and technical applications
• Unit-conversion practice

Celsius, Fahrenheit and Kelvin are the most commonly encountered scales today, while Rankine and several historical scales are useful in specialized or educational contexts.

What is Temperature Conversion?

Temperature conversion means expressing the same temperature using a different temperature scale.

For example:

0°C = 32°F = 273.15 K = 491.67°R

Similarly:

100°C = 212°F = 373.15 K = 671.67°R

The numerical value changes because each temperature scale uses a different zero point and degree interval.

Temperature Scales Supported

Celsius (°C)

The Celsius scale is commonly used for weather, household temperatures and scientific applications.

Fahrenheit (°F)

Fahrenheit is widely used for everyday temperature measurement in the United States.

Kelvin (K)

Kelvin is an absolute thermodynamic temperature scale commonly used in science. Unlike Celsius, Kelvin values do not use the degree symbol.

Rankine (°R)

Rankine is an absolute temperature scale whose degree interval is the same size as Fahrenheit’s degree.

Newton (°N)

The Newton scale is a historical temperature scale associated with Isaac Newton.

Delisle (°De)

The Delisle scale runs in the opposite direction to Celsius: its numerical value decreases as temperature increases.

Réaumur (°Ré)

The Réaumur scale is a historical temperature scale in which the freezing and boiling points of water are 0°Ré and 80°Ré respectively.

Rømer (°Rø)

The Rømer scale is another historical temperature scale developed by Ole Rømer.

How to Use the Temperature Converter?

Using DigiSadhan’s online temperature calculator is easy.

Step 1

Enter the temperature value.

Step 2

Select the From temperature unit.

For example:

Celsius

Step 3

Select the To temperature unit.

For example:

Fahrenheit

Step 4

Click Convert.

The calculator displays the converted temperature instantly.

Temperature Conversion Formulas

Celsius to Fahrenheit

°F = (°C × 9/5) + 32

Example

25°C:

(25 × 9/5) + 32

= 45 + 32

= 77°F

Celsius to Kelvin

K = °C + 273.15

Example:

25°C + 273.15

= 298.15 K

Celsius to Rankine

°R = (°C + 273.15) × 9/5

Example:

(25 + 273.15) × 9/5

= 536.67°R

Celsius to Newton

°N = °C × 33/100

Example:

25 × 33/100

= 8.25°N

Celsius to Delisle

°De = (100 − °C) × 3/2

Example:

(100 − 25) × 3/2

= 112.5°De

Celsius to Réaumur

°Ré = °C × 4/5

Example:

25 × 4/5

= 20°Ré

Celsius to Rømer

°Rø = (°C × 21/40) + 7.5

Example:

(25 × 21/40) + 7.5

= 20.625°Rø

These formulas and their corresponding reverse conversions are established linear temperature-scale relationships.

Fahrenheit Conversion Formulas

Fahrenheit to Celsius

°C = (°F − 32) × 5/9

Fahrenheit to Kelvin

K = (°F + 459.67) × 5/9

Fahrenheit to Rankine

°R = °F + 459.67

Fahrenheit to Newton

°N = (°F − 32) × 11/60

Fahrenheit to Réaumur

°Ré = (°F − 32) × 4/9

Fahrenheit to Delisle

°De = (212 − °F) × 5/6

Fahrenheit to Rømer

°Rø = (°F − 32) × 7/24 + 7.5

Kelvin Conversion Formulas

Kelvin to Celsius

°C = K − 273.15

Kelvin to Fahrenheit

°F = K × 9/5 − 459.67

Kelvin to Rankine

°R = K × 9/5

Kelvin to Newton

°N = (K − 273.15) × 33/100

Kelvin to Réaumur

°Ré = (K − 273.15) × 4/5

Kelvin to Delisle

°De = (373.15 − K) × 3/2

Kelvin to Rømer

°Rø = (K − 273.15) × 21/40 + 7.5

Important Temperature Conversion Examples

Celsius	Fahrenheit	Kelvin	Rankine
0°C	32°F	273.15 K	491.67°R
25°C	77°F	298.15 K	536.67°R
37°C	98.6°F	310.15 K	558.27°R
100°C	212°F	373.15 K	671.67°R

These reference values follow the standard conversion relationships.

Why Use an Online Temperature Converter?

Manual temperature conversion can become inconvenient when working with several different scales. DigiSadhan’s calculator makes the process faster and reduces arithmetic errors.

It is useful for:

• School assignments
• Physics problems
• Chemistry calculations
• Laboratory experiments
• Engineering calculations
• International weather comparisons
• Cooking temperature conversion
• Scientific education
• Unit conversion practice

Benefits of DigiSadhan Temperature Converter

• Free online temperature calculator
• Multiple temperature scales
• Celsius to Fahrenheit conversion
• Celsius to Kelvin conversion
• Fahrenheit to Celsius conversion
• Kelvin conversion
• Rankine conversion
• Newton conversion
• Delisle conversion
• Réaumur conversion
• Rømer conversion
• Instant results
• Mobile-friendly interface
• Easy-to-understand formulas

Frequently Asked Questions

How do I convert Celsius to Fahrenheit?

Use:

°F = (°C × 9/5) + 32

For example, 20°C = 68°F.

How do I convert Celsius to Kelvin?

Use:

K = °C + 273.15

Therefore, 25°C = 298.15 K.

What is 0°C in Fahrenheit?

0°C = 32°F.

What is 100°C in Fahrenheit?

100°C = 212°F.

What is the difference between Kelvin and Celsius?

The size of a Kelvin and a Celsius degree is the same, but their zero points differ by 273.15. Thus:

K = °C + 273.15

What is Rankine?

Rankine is an absolute temperature scale using Fahrenheit-sized degree intervals. It can be converted from Kelvin using:

°R = K × 9/5.

Are Newton, Delisle, Réaumur and Rømer commonly used today?

They are primarily historical or specialized temperature scales. Celsius, Fahrenheit and Kelvin are much more commonly encountered today.

Is DigiSadhan’s Temperature Converter free?

Yes. DigiSadhan provides this temperature conversion calculator as a free online tool.

तापमान कन्वर्टर – Celsius से Fahrenheit, Kelvin और अन्य Units

मुफ्त ऑनलाइन Temperature Converter

DigiSadhan का Temperature Converter एक मुफ्त ऑनलाइन टूल है जिसकी सहायता से आप तापमान को Celsius, Fahrenheit, Kelvin, Rankine, Newton, Delisle, Réaumur और Rømer में Convert कर सकते हैं।

यह Students, Teachers, Engineers, Researchers और सामान्य Users के लिए उपयोगी है।

Temperature Conversion क्या है?

एक ही तापमान को अलग-अलग Temperature Scales में व्यक्त करना Temperature Conversion कहलाता है।

उदाहरण:

0°C = 32°F = 273.15 K = 491.67°R

और:

100°C = 212°F = 373.15 K = 671.67°R

हर scale का zero point और degree interval अलग हो सकता है।

Celsius से अन्य Temperature Units का Formula

Celsius से Fahrenheit

°F = (°C × 9/5) + 32

25°C:

= 77°F

Celsius से Kelvin

K = °C + 273.15

25°C:

= 298.15 K

Celsius से Rankine

°R = (°C + 273.15) × 9/5

25°C:

= 536.67°R

Celsius से Newton

°N = °C × 33/100

25°C:

= 8.25°N

Celsius से Delisle

°De = (100 − °C) × 3/2

25°C:

= 112.5°De

Celsius से Réaumur

°Ré = °C × 4/5

25°C:

= 20°Ré

Celsius से Rømer

°Rø = (°C × 21/40) + 7.5

25°C:

= 20.625°Rø

Fahrenheit से Conversion Formula

Celsius:

°C = (°F − 32) × 5/9

Kelvin:

K = (°F + 459.67) × 5/9

Rankine:

°R = °F + 459.67

Newton:

°N = (°F − 32) × 11/60

Réaumur:

°Ré = (°F − 32) × 4/9

Kelvin से Conversion Formula

Celsius:

°C = K − 273.15

Fahrenheit:

°F = K × 9/5 − 459.67

Rankine:

°R = K × 9/5

Réaumur:

°Ré = (K − 273.15) × 4/5

Newton:

°N = (K − 273.15) × 33/100

सामान्य Temperature Conversion

Celsius	Fahrenheit	Kelvin	Rankine
0°C	32°F	273.15 K	491.67°R
25°C	77°F	298.15 K	536.67°R
37°C	98.6°F	310.15 K	558.27°R
100°C	212°F	373.15 K	671.67°R

Temperature Converter के लाभ

• Free Online Tool
• Celsius to Fahrenheit
• Fahrenheit to Celsius
• Celsius to Kelvin
• Kelvin to Celsius
• Rankine Conversion
• Newton Conversion
• Delisle Conversion
• Réaumur Conversion
• Rømer Conversion
• Instant Calculation
• Students के लिए उपयोगी
• Mobile-Friendly