Chartixo
Converters

Temperature Converter

Convert temperatures between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R).

Converted Output
77 F

Formula: (°C × 9/5) + 32 = °F

All Equivalent Units Table

Celsius (°C)25
Fahrenheit (°F)77
Kelvin (K)298.15
Rankine (°R)536.67
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How It Works & Underlying Concept

Temperature represents the average kinetic energy of the particles in a system. Unlike length and weight which scale proportionally from zero, Fahrenheit and Celsius have different zero reference points and different degree sizes, requiring affine algebraic transformations.

Mathematical Formula / Rule(°C × 9/5) + 32 = °F | (°F - 32) × 5/9 = °C | K = °C + 273.15
Quick Instructions
1Type the numerical temperature value into the input field.
2Select the unit you are converting from (e.g. Celsius).
3Select your target unit (e.g. Fahrenheit) to view the conversion.

Key Capabilities

  • Converts Celsius, Fahrenheit, Kelvin, and Rankine seamlessly
  • Accurate negative temperature handling down to Absolute Zero
  • Shows exact conversion formula applied for each scale
Real-World Example

Baking Temperature Conversion

A European recipe calls for preheating an oven to 180°C. A cook using an American oven needs the Fahrenheit equivalent.

Step 1:Enter 180 as the Celsius value.
Step 2:Apply formula: (180 × 9/5) + 32 = (324) + 32 = 356°F.
Result: 180°C equals 356°F (typically rounded to 350°F or 375°F for baking).
Technical Notes & Limits
  • Temperatures cannot fall below Absolute Zero (-273.15°C or 0 Kelvin).

Frequently Asked Questions

At what temperature are Celsius and Fahrenheit equal?▾
Celsius and Fahrenheit are equal at -40 degrees (-40°C = -40°F).
Why does Kelvin not use a degree symbol?▾
Kelvin is an absolute thermodynamic temperature scale with an absolute zero, not an arbitrary interval scale, so it is written simply as K rather than °K.

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