How it works
Sizes follow the objects storm spotters compare hail to (pea 0.25 in, quarter 1.00 in, golf ball 1.75 in, baseball 2.75 in, softball 4.00 in). The NWS calls hail severe at 1 inch or larger.
Free calculator / Roofing
Hail size chart.
Name a hailstone's size the way storm reports do (penny, quarter, golf ball) and see whether it meets the National Weather Service's severe threshold.
Your numbers
Change any value. The result updates here in your browser.
Your answer
A quick example
A 1.75-inch stone is golf ball hail: severe, and well past the 1-inch threshold.
This is a calculation from numbers you supply, not financial or tax advice. Check assumptions before making a decision.