How long does hair grow back after a haircut?

Hair typically grows about half an inch (1.25 cm) per month on average, so after a haircut, it usually takes around 6 to 12 months for hair to grow back to its original length, depending on how much was cut and individual growth rates. Factors such as genetics, age, and overall health can also influence hair growth. Therefore, if you had a standard trim, you might expect noticeable growth within a couple of months.