Ceramic Arts Queensland Shrinkage Calculator
Choose your units of measurement. Enter the finished sizes of the piece (the size after all firings have been completed).
Enter the percentage shrinkage either from the clay maker's specification sheet or from your own testing (more accurate). Use the advanced option if there are shrinkage values for drying, bisque and glazing.
Press the "Calculate" button to get the wet sizes you need to make your piece to allow for shrinkage. You can print the results.