How Long Does It Last?
Clear, straightforward answers about how long things last. From appliances and building materials to fixtures and structural components — we break down lifespan expectations so you can plan, repair, or replace with confidence.
Free calculators
Plan your camping and motorhome supplies with these free tools. Enter your own measurements for an estimate that fits your setup.
Gas bottle calculator
Check the estimated propane or butane remaining from the bottle’s tare and current weight. Supports kilograms and pounds/ounces.
Leisure battery runtime calculator
Estimate how long your battery will power lights, TVs, phone chargers and other appliances, with adjustable battery chemistry and reserve.