When I was trying to recalulet my gauge and diameters I did so:
- i measure my hips (about 84 cm), than divided on 2 (42cm). So back and frons are 42 cm. But frons are two so I have to divide agan on 2. Each front is 21 cm and than I add 3 cm for each front for border. Each front is 24cm, back are 42cm
- Second step is to measure bust (in my case it’s 80, it’s 79 but 80 is easier to count). Again I divided on 2, so back are 40 cm, and both fronts are 40. Than I divided again on 2, so each front is 20. And I add 3cm for forder. In the end it’s 23cm for each front and 40 for back
In the and I’m adding all together again. So for hips it’s 90cm, for bust it’s 86.
Next step is to do maths and count number of stitches. It depends on your gauge. Third step is to do decreasing: how many stitches you have to decrease to get from 90cm to 86cm.