Measure a full turn
Start in a practice area. Line up with a fixed point, make a full 360° turn and measure the distance your mouse moved. Repeat the test slowly to reduce measurement error.
Enter the actual in-game value
Pick the source and target game and enter your current DPI and sensitivity. The converter matches hip-fire distance at the same DPI using the games’ yaw constants.
Check your scopes separately
Test a fixed aim drill after entering the new value. The same distance for a turn can feel different at another field of view. Adjust individual optics in game after you confirm hip-fire.