Celsius to Fahrenheit Conversion

Most countries officially use the Celsius temperature scale. However, the United-States still use the Fahrenheit scale, even though scientists prefer to use Kelvin or Celsius. This Fahrenheit temperature scale is used for weather forecasts, cooking temperatures, etc. It is therefore important to know how to do Celsius to Fahrenheit conversion.

Conversion Formula

[°F] = [°C] × 1.8 + 32

… or if you prefer using a fraction

[°F] = [°C] × ​⁹⁄₅ + 32

The Celsius to Fahrenheit conversion requires a simple equation. To obtain a Fahrenheit value, you must first multiply the Celsius value by 1.8 (or the fraction 9/5), then add 32. The order of these operations is important. You must perform the multiplication before the addition to convert Celsius to Fahrenheit.

Celsius to Fahrenheit Chart

As you can see, plotting Fahrenheit temperature as a function of Celsius degrees gives a linear equation. Alternatively, you can use such a chart to easily convert Celsius to Fahrenheit.

Example – Convert 5 Celsius to Fahrenheit

Let’s say that you want to convert 5 Celsius to Fahrenheit. The first step is to multiply 5 by 1.8 to obtain 9. Then, you take this result of 9 and add 32 to determine that 5 degrees Celsius is the equivalent of 41 Fahrenheit.

This formula can precisely convert Celsius to Fahrenheit, but it is not trivial to perform fast mental calculations. Alternatively, you can estimate a Fahrenheit value by multiplying the Celsius value by 2 before adding 32 degrees. Using the same example, the estimation for 5 Celsius is 42 Fahrenheit. In addition, this estimation is very close to the exact value of 41 degrees.

0° Celsius to Fahrenheit

The Celsius temperature scale arbitrary sets the freezing point of water as 0° Celsius. The conversion of 0° Celsius to Fahrenheit gives 32 degrees. As a result, the 0 degree Fahrenheit was instead set to reflect the freezing temperature of… a mixture of ice, water and salt. Of course, this is not the most convenient reference point to set up a temperature scale. Nevertheless, the freezing temperature of this mixture is set using this scale to 0 Fahrenheit which converts to -32 Celsius.

100 Celsius to Fahrenheit

The Celsius temperature scale sets the boiling temperature of water to 100° Celsius. The conversion of 100 Celsius to Fahrenheit gives 212 degrees. Therefore, the boiling point of water is 212 Fahrenheit.

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Celsius to Fahrenheit Table

Conversion table (-30 to 40 Celsius) – Useful for Weather Temperature Conversion

Celsius	Fahrenheit
-30	-22
-29	-20.2
-28	-18.4
-27	-16.6
-26	-14.8
-25	-13
-24	-11.2
-23	-9.4
-22	-7.6
-21	-5.8
-20	-4
-19	-2.2
-18	-0.4
-17	1.4
-16	3.2
-15	5
-14	6.8
-13	8.6
-12	10.4
-11	12.2
-10	14
-9	15.8
-8	17.6
-7	19.4
-6	21.2
-5	23
-4	24.8
-3	26.6
-2	28.4
-1	30.2
0	32
1	33.8
2	35.6
3	37.4
4	39.2
5	41
6	42.8
7	44.6
8	46.4
9	48.2
10	50
11	51.8
12	53.6
13	55.4
14	57.2
15	59
16	60.8
17	62.6
18	64.4
19	66.2
20	68
21	69.8
22	71.6
23	73.4
24	75.2
25	77
26	78.8
27	80.6
28	82.4
29	84.2
30	86
31	87.8
32	89.6
33	91.4
34	93.2
35	95
36	96.8
37	98.6
38	100.4
39	102.2
40	104

Conversion table (120 to 260 Celsius) – Useful for Kitchen Temperature Conversion

Celsius	Fahrenheit
120	248
125	257
130	266
135	275
140	284
145	293
150	302
155	311
160	320
165	329
170	338
175	347
180	356
185	365
190	374
195	383
200	392
205	401
210	410
215	419
220	428
225	437
230	446
235	455
240	464
245	473
250	482
255	491
260	500

Did you find this information useful? Don’t hesitate to leave a comment down below!

Check also my previous post to learn more about the scientific method or to see how does a Crookes radiometer work.

References

1- Wikipedia – Farhenheit.

2- Wikipedia – 0 Fahrenheit is the freezing point of brine.