Temperature Converter
Instantly convert between Celsius, Fahrenheit, Kelvin, Rankine, and four historical scales. Fast, accurate, and 100% private.
100 °C in all units
Celsius
°C
Fahrenheit
°F
Kelvin
K
Rankine
°R
Delisle
°De
Newton
°N
Réaumur
°Ré
Rømer
°Rø
Click any row to set it as the target unit
Common Temperature References
Temperature Reference Points
Absolute Zero
Lowest possible temperature
Water Freezes
At standard pressure
Room Temperature
Typical indoor comfort
Body Temperature
Average human body temp
Water Boils
At standard pressure
Sun Surface
Photosphere temperature
Click any row to load it into the converter
How It Works
Select the unit to convert from and the unit to convert to, then enter any temperature value. Results update instantly. Use the Swap button to reverse direction, or click any row in the reference tables to load it into the converter.
Supported scales:
Common
°CCelsius°FFahrenheit
Scientific
KKelvin°RRankine
Historical
°DeDelisle°NNewton°RéRéaumur°RøRømer
Instant Results
Results update in real time as you type. The full conversion table shows all 8 scales simultaneously.
8 Temperature Scales
Covers all major scales — Celsius, Fahrenheit, Kelvin, Rankine, plus four historical scales: Delisle, Newton, Réaumur, and Rømer.
100% Private
All conversions happen locally in your browser — no server, no tracking, works completely offline.
Where to Use This Tool
restaurantCooking & Baking
- • Convert oven temperatures between °C and °F
- • Adapt international recipes to local scales
- • Convert food storage temperatures
- • Understand recipe temperature references
scienceScience & Engineering
- • Convert between Kelvin and Celsius for physics
- • Work with Rankine in thermodynamics
- • Verify temperature calculations
- • Convert cryogenic temperatures
travel_exploreTravel & Weather
- • Understand weather forecasts in foreign countries
- • Convert body temperature readings
- • Compare climate data across regions
- • Convert temperature for travel preparation
schoolEducation
- • Learn the relationships between temperature scales
- • Solve physics and chemistry homework
- • Study historical temperature scales
- • Verify manual conversion calculations