The Carolina Reaper has a Scoville Heat Scale rating between 1,400,000 and 2,200,000 SHU.
Carolina Reaper
Other from the Carolina Reaper, it is the only pepper to have reached the 2 million SHU barrier.
Trinidad Moruga Scorpion
The 7-Pot Douglah is primarily composed of red peppers, making it a rare example of a chocolatey brown colour on this list.
7-Pot Douglah
To distinguish it from the other 7-Pot peppers, this one is frequently simply called the Primo, named for its creator Troy Primeaux, also known as "Primo."
7-Pot Primo
On the list of the World's Hottest Peppers, the Butch T is only somewhat less fiery than number four. It has a SHU of 1,463,700.
Trinidad Scorpion Butch T
This unique pepper has a Scoville Heat Unit measurement of 1,349,000. This pepper is a special cross between the Trinidad Scorpion, Bhut Jolokia, and Naga Morich chilli peppers.
Naga Viper
Native to the Indian states of Assam, Nagaland, and Manipur, the Bhut Jolokia is also called the Ghost Pepper.
Ghost Pepper