how to calculate. just add your birtday , until the last 2 digit

for eg
10.9.1920

so

1+0+9+1+9+2+0
=22
2+2= 4

so mine is 2

LIFE PATH NUMBER 2

Relationships are the key to your life. You are not interested in living your life alone, only in sharing it with a partner. You make an excellent worker because of your willingness to accept guidance and your eagerness to please. You are quite willing to protect and sustain loved ones. You respond to the needs of the moment. You are resilient to the point of being able to pull through the worst of any crisis. You are willing to cooperate and share in a relationship, but you expect results and equality.

Your challenge is one of learning how to incorporate the opinions of others without giving up personal integrity. Express your feelings as they come up. You are moody and need to occasionally remind yourself to let go of the past and move on.

http://www.kikisdragon.com/LifePathNumberMeanings.htm