Temperature conversion
Celsius–Fahrenheit Converter
Convert Celsius, Fahrenheit, and Kelvin. Negative values, decimals, and everyday temperatures are all supported.
Converts scales only; it does not assess fever or environmental safety
Input
Value and units
Values convert through degrees Celsius before the target unit. This page does not save input.
Result
Celsius → Fahrenheit
33.8°F
| Unit | Value |
|---|---|
| Celsius (°C) | 1 |
| Fahrenheit (°F) | 33.8 |
| Kelvin (K) | 274.15 |
Conversion basis
Temperature conversion needs both a scale and a zero-point offset.
Celsius and Fahrenheit do not start at the same zero, so one multiplier is not enough. Kelvin degrees match Celsius in size, but Kelvin zero is 273.15 degrees lower.
Absolute zero is 0 K, or −273.15°C. The calculator can produce values below 0 K mathematically, but they have no ordinary thermodynamic meaning.
°F = °C × 9 ÷ 5 + 32; K = °C + 273.15.
FAQ
Celsius–Fahrenheit Converter · FAQ
What is 0°C in Fahrenheit?
0°C is 32°F and 273.15 K.
Where do Celsius and Fahrenheit match?
−40°C and −40°F have the same numeric value.
Does Kelvin use a degree symbol?
No. Write 300 K, not 300°K.