Dial-a-yield is an option available on most modern nuclear bombs. It allows the pilot to specify the yield (explosive power) of a given bomb, allowing a single design of bomb to be used in many different situations.

Adjusting yield can also take place on the ground with the addition or subtraction of devices known as tampers which control the rate of fission or fusion. An example of this is the Tsar Bomba which had its uranium fusion tamper replaced with a lead one, effectively cutting the yield in half.