Hair Growth Calculator

Hair Grow Time: Months
Hair Grow Length:

Hair Growth Formula:

Hair grow length = Hair grow time × 0.5 in inches

Healthy hair grows at about .5 inches per month, and there really isn't any reliable way to speed it up unless it's growing slowly due to poor health. Medications can help to prevent hair loss and even cause it to grow in places where you lost it, but they won't actually cause your hair to grow faster. If your hair is growing abnormally slowly, take a look at our hair growth tips for things you can do to help. provides you helpful and handy calculator resources.