Celsius to Kelvin Temperature Converter

Celsius to Kelvin Converter

Select a conversion type:

Celsius to Kelvin Kelvin to Celsius

Celsius

Kelvin:

Kelvin

Celsius:

A Celsius to Kelvin Converter is a fundamental tool for converting temperature measurements between the Celsius (°C) scale (used in most countries) and the Kelvin (K) scale (the SI base unit for thermodynamic temperature). This conversion is vital for:

• Scientific research and laboratory work
• Engineering and industrial applications
• Physics and chemistry calculations
• Meteorology and climate science

Key Temperature Reference Points

• Absolute zero: -273.15°C = 0K
• Freezing point of water: 0°C = 273.15K
• Boiling point of water: 100°C = 373.15K
• Room temperature: ~20-25°C = 293-298K
• Human body temperature: 37°C = 310.15K

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Conversion Formulas

Celsius to Kelvin Formula

$$K=\mathrm{°}C+273.15$$

Kelvin to Celsius Formula

$$\mathrm{°}C=K-273.15$$

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How to Use a Celsius to Kelvin Converter

1. Enter the temperature in Celsius (°C)

2. Click "Convert" (or press Enter)

3. View the result in Kelvin (K)

4. (Optional) Most converters allow reverse conversion (Kelvin to Celsius)

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Common Temperature Conversions

Celsius (°C)	Kelvin (K)	Significance
-273.15°C	0K	Absolute zero
-100°C	173.15K	Extremely cold
-40°C	233.15K	-40°C = -40°F
0°C	273.15K	Freezing point of water
20°C	293.15K	Room temperature
37°C	310.15K	Human body temperature
100°C	373.15K	Boiling point of water

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Why Convert Celsius to Kelvin?

• Scientific Precision: Kelvin is the SI base unit for temperature
• Thermodynamic Calculations: Required for gas laws and heat transfer
• Absolute Measurements: Kelvin starts at absolute zero (no negative values)
• Standardized Research: Ensures consistency in scientific publications

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Manual Calculation Examples

Example 1: Convert 25°C to Kelvin

$$K=25+273.15=298.15K$$

Example 2: Convert -15°C to Kelvin

$$K=-15+273.15=258.15K$$

Example 3: Convert 500K to Celsius

$$\mathrm{°}C=500-273.15=226.85\mathrm{°}C$$

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Practical Applications

• Chemistry: Calculating reaction rates and equilibrium constants
• Physics: Working with ideal gas laws (PV=nRT)
• Engineering: Thermal system design and analysis
• Space Science: Measuring cosmic background radiation (2.725K)
• Cryogenics: Studying superconductors at low temperatures

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Quick Reference Tips

• Remember: The conversion is simply adding/subtracting 273.15
• Kelvin values are always positive (0K is the lowest possible temperature)
• No degree symbol for Kelvin (correct: 300K; incorrect: 300°K)
• For rough estimates: 0°C = 273K, 100°C = 373K (exact difference: 273.15)

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Special Considerations

1. Significant Figures: Maintain proper precision in scientific work

2. Temperature Intervals: A 1°C change = 1K change (same magnitude)

3. Absolute Zero: Cannot be physically achieved (Third Law of Thermodynamics)