Free tools to help you choose, size, and run your generator with confidence.
Add your appliances and find out exactly how many watts you need. Never buy the wrong size again.
Use Calculator →Find out how long your generator will run on a full tank at any load level. Plan for extended outages.
Use Calculator →Calculate your generator running costs per hour, day, and week. Compare gasoline, propane, and natural gas.
Use Calculator →Read our complete guide on how to size a generator for your home.
Read the Guide →