Free tool
Knee Load Calculator
Research suggests each pound of body weight adds roughly four pounds of extra force on your knees with every step you take.
Enter your current weight to see how much force you could take off your knees by losing a few pounds — explained in Chapter 8 of Ageless Movement.
This is a simplified, illustrative estimate based on general biomechanics research cited in Ageless Movement, not a personalized medical calculation. Talk to your doctor or a physical therapist about your own joint health.