Calf Wall Stretch
This is probably the most common calf stretch, but it’s a little more difficult to perform than the calf step stretch, and it doesn’t always work for people who have good calf flexibility.
Start with both hands against a wall or similar object and have your feet close to arms length away from the wall. Then step back with the leg that you want to stretch and make sure your heel is able to stay flat on the ground. The further back the leg is, the more intense the stretch.
The stretch can be further enhanced by simultaneously shifting your weight forward and pushing your back heel into the ground. In order to shift your weight effectively, it usually helps to move your front leg forward (closer to the wall).
As with the step calf stretch, ff your stretching leg is almost straight (always keep a tiny bend in your knees), it targets the main part of the calf, especially the upper end under the knee. If you want to focus on the lower part of your calf and your achilles, increase the bend in your back knee, keeping the heel on the ground.