Project your hair’s length after a given number of months, using an average growth rate.
How it works
Projected length is current length + (growth rate × months). At the commonly cited average rate of 0.5 inches per month, hair currently 6 inches long would reach about 9 inches after 6 months.
What this does not include
0.5 in/month is a population average, not a personal guarantee — individual growth rates vary with genetics, age, health, and hair type, so this projects a rough estimate rather than a precise personal prediction. The growth rate is adjustable if you’ve tracked your own rate.
How to use this calculator
- Enter your current hair length.
- Enter how many months ahead you want to project.
- Adjust the growth rate if you know your own.
Does hair growth rate stay constant over a person’s life?
No — growth rate can slow with age and is affected by hormonal changes, nutrition, and overall health, so a rate that held steady in your twenties may not hold decades later.
Why do some people seem to grow hair faster than others?
Genetics is the primary driver of individual hair growth rate, along with factors like age, hormones, and overall health — the 0.5 in/month figure is simply an average across a wide range of individual rates.
Does cutting hair make it grow faster?
No — cutting hair has no effect on the growth rate at the scalp, since hair grows from the follicle, not the cut end; regular trims only remove split ends, not accelerate growth.
