AnyDice

With the /roll command, users can combine dice expressions and numerical values for their rolls, inserting k or kh to impose advantage or disadvantage, respectively. Roll expressions can be repeated by doing /roll repeat. /char automatically rolls character stats for D&D 5e. Now supports fate dice!

With /flip, users can flip a coin or as many coins as they so wish by placing a number after the command.

With /c2f and /f2c, users can easily convert between Celsius and Fahrenheit and vice versa. /c2i and /i2c do the same for centimeters/inches, and /k2p and /p2k do the same with kilograms/pounds!