National Wildfire Coordinating Group

Size Class of Fire

  • As to size of wildfire:
    • Class A - one-fourth acre or less;
    • Class B - more than one-fourth acre, but less than 10 acres;
    • Class C - 10 acres or more, but less than 100 acres;
    • Class D - 100 acres or more, but less than 300 acres;
    • Class E - 300 acres or more, but less than 1,000 acres;
    • Class F - 1,000 acres or more, but less than 5,000 acres;
    • Class G - 5,000 acres or more.
Glossary Tag: 
IOSC