About Household Figures

Household Figures builds free calculators that help US households understand what things cost: running an appliance, fueling a car, installing solar panels, and more as the site grows.

The tools and pages are written and maintained with the help of an AI assistant and reviewed by the site owner. Formulas are published on the methodology page and each tool is tested against hand-worked examples before release.

We are an independent site. We do not sell your data. See our editorial policy and privacy policy.