The decigrade temperature scale is intended to simplify thinking about temperature in everyday contexts, by stating temperatures in terms of numbers most easily grasped by the human mind. Decigrade sets the freezing point of water to 0 degrees and the temperature of the human body to 10 degrees. This makes it possible to feel the difference between 0 and 10 degrees by holding an ice cube in one's hand.

Since the normal temperature of the human body varies, it cannot be used as part of a formal definition of the temperature scale, and consequently the decigrade scale is formally defined in terms of the boiling point of water, which is 27 degrees. This means that 10 degrees Decigrade equals 98.6 Fahrenheit and 37.037 Celsius. A fever in an adult starts to become dangerous around 11.

The decigrade temperature scale was invented by Val Kornea, a Yugoslavian-born American who observed that he tended to think in terms of Celsius during winter and in terms of Fahrenheit during summer. He hypothesised that the reason for this is that the freezing point of water (0 Celsius) and the temperature of the human body (just under 100 Fahrenheit) made the ideal reference points of cold and hot in the context of weather.

Numbers are rounded to the nearest integer in the chart and in the calculations text fields; enter a decimal point after your integer to increase rounding precision.

1500 10000 5500 5800 ~Sun's Surface
413 2786 1530 1803 ~Iron Melts
250 1700 900 1200 ~Lava
145 997 536 809 ~Hydrogen Ignites
94 660 349 622 ~Charcoal Ignites
70 499 259 532 ~Gasoline Ignites
63 452 233 506 ~Paper Ignites
27 212 100 373.15 Water Boils
16 139 59 332 ~Earth record
15 132 56 329
14 125 52 325
13 119 48 321
12 112 44 318 ~Sahara
11 105 41 314
11.0 105.33 40.74 313.89
10.8 104 40 313.15
10.5 102 38.89 312.04
10.2 100 37.78 310.93
10.0 98.67 37.04 310.19
10 99 37 310 ~Human Body
9 92 33 306
8 85 30 303
7 79 26 299
6 72 22 295
5 65 19 292
4 59 15 288
3 52 11 284
2 45 7 281
1 39 4 277
0 32 0 273.15 Water Freezes
-1 25 -4 269
-2 19 -7 266
-3 12 -11 262
-4 5 -15 258
-5 -1 -19 255
-10.8 -40 -40 233.15 10.8°D = 40°C
-24 -128 -89 184 ~Earth record
-68.3 -423.17 -252.87 20.28 Liquid Hydrogen
-73.7505 -459.67 -273.15 0 Absolute Zero

"Man is the measure of all things." - Protagoras (~490BC–~420BC)