Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly
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Temperature Converter
Temperature Reference
Water Freezing Point
0°C = 32°F = 273.15K
Room Temperature
20°C = 68°F = 293.15K
Water Boiling Point
100°C = 212°F = 373.15K
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About Temperature Conversion
Our temperature converter supports Celsius, Fahrenheit, and Kelvin scales. Perfect for cooking, weather, science experiments, and international travel.
Temperature Scale Information
- Celsius (°C): Water freezes at 0°C and boils at 100°C
- Fahrenheit (°F): Water freezes at 32°F and boils at 212°F
- Kelvin (K): Absolute zero is 0K (−273.15°C or −459.67°F)
Common Temperature Conversions
- 0°C = 32°F = 273.15K (Freezing point of water)
- 100°C = 212°F = 373.15K (Boiling point of water)
- 37°C = 98.6°F = 310.15K (Normal body temperature)
- -40°C = -40°F = 233.15K (Same temperature in C and F)
Temperature Converter – Convert Celsius, Fahrenheit, and Kelvin Instantly
Temperature conversion is essential in our daily lives, whether you're following a recipe from another country, checking the weather while traveling, or working on scientific calculations. Different regions use different temperature scales, making conversion tools invaluable. makes it simple to switch between Celsius, Fahrenheit, and Kelvin with instant, accurate results.
Supported Temperature Conversions
Celsius Conversions
- • Celsius to Fahrenheit (°C to °F)
- • Celsius to Kelvin (°C to K)
- • Celsius to Rankine (°C to °R)
Fahrenheit Conversions
- • Fahrenheit to Celsius (°F to °C)
- • Fahrenheit to Kelvin (°F to K)
- • Fahrenheit to Rankine (°F to °R)
Common Temperature Examples
Everyday Temperatures
- Room Temperature: 20°C = 68°F
- Body Temperature: 37°C = 98.6°F
- Hot Summer Day: 35°C = 95°F
- Cold Winter Day: −10°C = 14°F
Cooking Temperatures
- Water Boiling: 100°C = 212°F
- Oven Baking: 180°C = 356°F
- Meat Safe Temp: 75°C = 167°F
- Water Freezing: 0°C = 32°F
Real-Life Uses for Temperature Conversion
🍳
Cooking & Baking
Convert oven temperatures for international recipes
✈️
Travel
Understand weather forecasts in different countries
🔬
Science
Laboratory work and scientific calculations
🌡️
Weather
Compare temperatures from different weather sources
Temperature Conversion Formulas
Essential Conversion Equations
Celsius to Fahrenheit:
°F = (°C × 9/5) + 32
°F = (°C × 9/5) + 32
Fahrenheit to Celsius:
°C = (°F − 32) × 5/9
°C = (°F − 32) × 5/9
Celsius to Kelvin:
K = °C + 273.15
K = °C + 273.15
Kelvin to Celsius:
°C = K − 273.15
°C = K − 273.15
Why Our Temperature Converter Stands Out
✓Instant, accurate conversions
✓Supports all major temperature scales
✓Mobile-friendly design
✓No registration required
✓Works offline once loaded
✓Precise to multiple decimal places
Ready to Convert Temperatures?
Whether you need celsius to fahrenheit conversion for cooking, oven temperature conversion for baking, or scientific temperature calculations, our temperature calculator handles it all.
Temperature conversion doesn't have to be complicated. With our intuitive temperature converter, you can quickly switch between Celsius, Fahrenheit, and Kelvin for any situation. From following international recipes to understanding weather reports while traveling, accurate temperature conversion is just a click away. and experience the convenience of instant, precise conversions.
Complete Temperature Conversion Guide
Comprehensive guide to temperature scales, conversions, and professional applications
Understanding Temperature Scales
Common Temperature Scales
- •Celsius (°C): water freezes at 0°, boils at 100°, used worldwide
- •Fahrenheit (°F): water freezes at 32°, boils at 212°, used in the US
- •Kelvin (K): absolute scale, 0 K = absolute zero (−273.15°C), used in science
- •Rankine (°R): absolute Fahrenheit scale, 0 °R = absolute zero, used in US engineering
Key Reference Points
- •Absolute zero: 0 K = −273.15°C = −459.67°F
- •Water freezing: 0°C = 32°F = 273.15 K
- •Body temperature: 37°C = 98.6°F = 310.15 K
- •Water boiling: 100°C = 212°F = 373.15 K
- •Room temperature: ~22°C = 71.6°F = 295.15 K
Conversion Formulas
Celsius Conversions
- •°C to °F: multiply by 9/5 then add 32
- •°C to K: add 273.15
- •°C to °R: multiply by 9/5 then add 491.67
- •Quick estimate °C to °F: double and add 30
Fahrenheit Conversions
- •°F to °C: subtract 32 then multiply by 5/9
- •°F to K: subtract 32, multiply by 5/9, add 273.15
- •°F to °R: add 459.67
- •Quick estimate °F to °C: subtract 30 and halve
Kelvin & Rankine
- •K to °C: subtract 273.15
- •K to °F: multiply by 9/5 then subtract 459.67
- •K to °R: multiply by 9/5
- •°R to K: multiply by 5/9
- •°R to °C: subtract 491.67 then multiply by 5/9
Professional Applications
Cooking & Food Safety
- •Meat doneness temps (beef medium: 63°C / 145°F)
- •Candy stages (soft ball: 112–115°C / 235–240°F)
- •Pasteurization (72°C / 161°F for 15 seconds)
- •Oven calibration for accurate baking results
- •Freezer storage (−18°C / 0°F) for food preservation
Medicine & Healthcare
- •Normal body temp: 37°C / 98.6°F
- •Fever threshold: 38°C / 100.4°F
- •Hypothermia: below 35°C / 95°F
- •Sterilization: 121°C / 250°F (autoclave)
- •Blood storage: 1–6°C / 33–42°F
- •Cryogenic storage: −196°C / −321°F
Industrial & Engineering
- •Metal melting points (steel: 1,370–1,510°C)
- •Heat treatment processes for hardening and annealing
- •HVAC design (ambient and supply air temps)
- •Engine operating temp (80–105°C coolant)
- •Cryogenics (liquid nitrogen: −196°C)
- •Semiconductor fabrication process control
Weather & Climate
- •Cold: −10°C = 14°F (freezing winter)
- •Cool: 10°C = 50°F (autumn)
- •Comfortable: 22°C = 71.6°F
- •Hot: 38°C = 100.4°F
- •Extreme heat: 45°C = 113°F
- •Record cold: −89.2°C = −128.6°F (Antarctica)
- •Record hot: 56.7°C = 134.1°F (Death Valley)
Temperature Measurement Best Practices
Instrument Selection
- •Thermocouples for industrial high-temperature measurement
- •RTDs for precision lab work requiring accuracy
- •Infrared for non-contact surface measurement
- •Glass mercury thermometers for reference standards
- •Digital thermometers for speed and convenience
- •Calibrate against NIST-traceable reference standards
Common Errors to Avoid
- •Mixing Celsius and Fahrenheit in the same calculation
- •Forgetting to add/subtract offset in °C ↔ K conversions
- •Confusing interval and absolute temperature conversions
- •Thermal equilibrium — let thermometer stabilize before reading
- •Reading scale at an angle (parallax error)
- •Not accounting for measurement uncertainty in critical applications
Temperature Examples by Category
Cooking Temperatures
- •Bread baking: 190°C = 374°F
- •Roast chicken: 165°C internal = 329°F
- •Deep fry oil: 175°C = 347°F
- •Candy hard crack: 149–154°C = 300–310°F
- •Espresso: 90–96°C = 194–205°F
- •Steak rare: 52°C = 125°F
- •Pizza stone: 260°C = 500°F
Industrial & Science
- •Steel melting: 1,370°C = 2,498°F
- •Liquid nitrogen: −196°C = −321°F
- •Glass annealing: 540°C = 1,004°F
- •Superconductor (YBCO): −183°C = −297°F
- •CPU max temp: 100°C = 212°F
- •Tire vulcanizing: 160°C = 320°F
- •Concrete curing: 10–30°C = 50–86°F
Weather & Environment
- •Antarctic winter: −60°C = −76°F
- •Arctic circle: −40°C = −40°F
- •Comfortable home: 20°C = 68°F
- •Summer day: 30°C = 86°F
- •Heat wave: 40°C = 104°F
- •Desert night: 5°C = 41°F
- •Tropics average: 27°C = 81°F
Frequently Asked Questions
Why do we have multiple temperature scales?▾
Different scales were invented independently for different purposes. Fahrenheit (1724) was based on brine and body temperature references. Celsius (1742) was designed around water's freezing and boiling points, making it intuitive for everyday use. Kelvin (1848) was created for thermodynamics, starting at absolute zero so temperatures are never negative — essential for physics equations.
How do I convert Celsius to Fahrenheit quickly?▾
For a quick mental estimate, double the Celsius value and add 30. For example, 20°C → 40 + 30 = 70°F (actual: 68°F). For exact conversion use °F = (°C × 9/5) + 32. The only temperature where both scales are equal is −40°, which is a handy mental anchor.
What is absolute zero?▾
Absolute zero (0 K = −273.15°C = −459.67°F) is the lowest theoretically possible temperature, where a system has minimum thermodynamic energy and all molecular motion ceases. It has never been achieved in practice, though scientists have gotten within billionths of a degree. It defines the starting point of the Kelvin and Rankine scales.
Why does the US use Fahrenheit?▾
The US adopted Fahrenheit in the 18th century before the metric system was established. Fahrenheit has a finer scale for everyday weather — a typical year in a temperate US city ranges roughly 0–100°F, which felt intuitive to early users. The rest of the world switched to Celsius with metrication, but the US retained its customary units including Fahrenheit for everyday use.
What temperature does water boil at altitude?▾
Water's boiling point drops approximately 0.5°C (0.9°F) for every 500 meters (1,640 ft) of altitude gain. At 1,000m (3,280 ft) water boils at about 99°C (210°F); at Denver (1,609m / 5,280 ft) at about 95°C (203°F); at Everest base camp (~5,364m / 17,598 ft) at about 83°C (181°F). This matters for cooking times and food safety.
How accurate are digital thermometers?▾
Consumer digital thermometers are typically accurate to ±0.5°C (±0.9°F). Clinical-grade thermometers meet ±0.1°C (±0.18°F) accuracy standards. Industrial RTDs and thermocouples can achieve ±0.01°C or better when properly calibrated against NIST-traceable standards. Infrared thermometers are generally accurate to ±1–2°C but require correct emissivity settings for precise readings.