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Celsius to Fahrenheit

Temperature scales do not share a zero point, so they convert by formula rather than by a single factor.

8 units in this converter

Converter

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Decimals, fractions such as 3/4, and scientific notation such as 1.2e3 all work.

Celsius to Fahrenheit at a glance

18 rows
CelsiusFahrenheit
-40 °C-40 °F
-20 °C-4 °F
-10 °C14 °F
0 °C32 °F
5 °C41 °F
10 °C50 °F
15 °C59 °F
20 °C68 °F
25 °C77 °F
30 °C86 °F
35 °C95 °F
37 °C98.6 °F
40 °C104 °F
50 °C122 °F
75 °C167 °F
100 °C212 °F
150 °C302 °F
200 °C392 °F

Quick pairs

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How the celsius to fahrenheit conversion works

Celsius, Fahrenheit and Kelvin are the everyday three; the rest are historical scales still met in old texts.

Temperature scales have different zero points, so a single multiplier is not enough. To go from Celsius to Fahrenheit, multiply by 1.8, then plus 32:

Fahrenheit = Celsius × 1.8 + 32

Reverse the operations to convert the other way: subtract first, then divide.

Questions

What is the formula for Celsius to Fahrenheit?

Multiply the Celsius reading by 1.8, then add 32.

Which units does this temperature converter cover?

8 units in total, all referenced to the kelvin. They include kelvin, celsius, fahrenheit, rankine, réaumur, delisle and more. Pick any pair from the two dropdown lists.

How precise are the results?

Every conversion is computed in your browser at double precision from the factors listed on this page, which follow the SI definitions and the exact international agreements for imperial and US customary units. Use the Decimals control to round the display without changing the underlying value.

Does anything I type leave my device?

No. The converter is plain JavaScript running locally, with no server round-trip, and the page keeps working offline once loaded.