The Heartalator

Age Formula Karvonen Formula MAF Formula LEGER Formula
(Constant-Age) x % intensity =  Training Zone

Constants:
Male = 220
Female = 226
((MHR-RHR) x % intensity) + RHR =  Training Zone

RHR

Resting Heart Rate measured in the morning when you wake up!
MHR
Maximum Heart Rate: It can be a constant according to your gender or your can enter yourself.
Constants:
MHR Male = 220 - Age
MHR Female = 226 - Age
(180-Age)) x % intensity = 
Training Zone

Developed by Phil Mafetone. Constant is 180 for male and female. Number need to be adjusted based on level of fitness:
- 1 to 2 times per week subtract 5 beats
- 3 to 4 times per week leave number as is
- 5 or more times add 5 beats
- Age 60 or older or 20 and below add 5 beats
(205-Age)) x % intensity =  Training Zone

Developed by Dr. Luc Leger. Constant is 205 for male and female.
Gender
Your Real Age
How old do you want to be?
How old do you feel?
RHR
MHR Use a Constant
Don't need to fill box below
OR Enter yourself
Do you work out ?
Number of days you train per week