About Right Size Generator

Right Size Generator is a free, independent generator sizing calculator. We don't sell generators or installations, and no manufacturer pays for its results.

Appliance wattages are typical values from manufacturer sizing charts. Costs are rough 2026 US ranges for planning; real quotes vary by region and site. Generator sizes follow the rules explained on the calculator page.

Spotted a number that looks off for your appliance or area? Tell us: contact@rightsizegenerator.com