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Celsius to Fahrenheit Converter

Celsius

Fahrenheit

Celsius [°C]	Fahrenheit [°F]	Description
-273.15 °C	-459.67 °F	Absolute zero
-200 °C	-328 °F	Outer space temperature
-100 °C	-148 °F	Dry ice (solid CO₂)
-89.2 °C	-128.6 °F	Lowest natural temperature recorded on Earth
-50 °C	-58 °F	Extreme winter temperature
-40 °C	-40 °F	Equal point (°F = °C)
-20 °C	-4 °F	Common freezer temperature
-10 °C	14 °F	Typical winter temperature
0 °C	32 °F	Freezing point of water
5 °C	41 °F	Typical refrigerator temperature
10 °C	50 °F	Cool day
20 °C	68 °F	Room temperature
30 °C	86 °F	Warm day
37 °C	98.6 °F	Normal human body temperature
40 °C	104 °F	Hot day / Fever
50 °C	122 °F	Extremely hot day
60 °C	140 °F	Hot water damage to skin begins
100 °C	212 °F	Boiling point of water (sea level)
200 °C	392 °F	Baking temperature in oven
500 °C	932 °F	Typical wood fire temperature
1000 °C	1832 °F	Molten lava temperature

Understanding Temperature Scales

Celsius

The Celsius scale (formerly known as the centigrade scale) was proposed in 1742 by Swedish astronomer Anders Celsius. In this scale, the freezing point of water is 0 °C, and the boiling point is 100 °C (at standard atmospheric pressure). The Celsius scale is used worldwide for most temperature measurements, including scientific, medical, and weather applications.

Fahrenheit

The Fahrenheit scale was proposed in 1724 by Daniel Gabriel Fahrenheit. In this scale, the freezing point of water is 32 °F, and the boiling point is 212 °F (at standard atmospheric pressure). The Fahrenheit scale is primarily used in the United States and its territories for everyday temperature measurement.

Conversion Formulas

Celsius to Fahrenheit:

Formula: °F = (°C × 9/5) + 32

Example: Convert 20 °C to Fahrenheit

°F = (20 × 9/5) + 32 = 36 + 32 = 68 °F

Fahrenheit to Celsius:

Formula: °C = (°F − 32) × 5/9

Example: Convert 68 °F to Celsius

°C = (68 − 32) × 5/9 = 36 × 5/9 = 20 °C

Key Temperature Points

Description	Celsius (°C)	Fahrenheit (°F)
Absolute zero	-273.15	-459.67
Freezing point of water	0	32
Room temperature	20-22	68-72
Normal body temperature	37	98.6
Boiling point of water	100	212

Global Usage

The Celsius scale is the primary temperature scale used in most countries worldwide. The Fahrenheit scale is predominantly used in the United States and its territories for everyday temperature measurements, though scientific and medical applications in the US typically use Celsius or Kelvin.

Interestingly, the Kelvin scale (K) is used in scientific contexts globally, particularly in physics and chemistry. It uses the same increments as Celsius but starts at absolute zero (−273.15 °C), the theoretical lowest possible temperature in the universe.