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Hair Growth Calculator (Time to Target Length)

Hair grows about half an inch a month on average, so reaching a target length takes patience. Enter your current and goal lengths to see how many months it should take.

How to use
  1. Enter your current hair length and your target length.
  2. Pick a growth rate: slow, average, fast, or custom.
Goal
Time to reach target
24.0 months

(18 − 6) in / 0.5 in per month

In years
2.00 yr
Growth needed
12.00 in
Target date
Yearly growth
6.0 in/yr
Estimates for general information, verify important figures before relying on them.
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Reference ranges

Growth rateInches per month
Slow0.25
Average0.50
Fast0.75

Common questions

How fast does hair grow?

About half an inch (1.25 cm) per month on average, or roughly 6 inches a year. Genetics, age, and health shift the rate.

Can I make my hair grow faster?

You cannot speed up the follicle much, but good nutrition, gentle handling, and trimming split ends help you keep the length you do grow.