Free calculators we built for RVers and campers. No signup, no spreadsheet — put in your numbers and get a straight answer, with links to the gear guides that go deeper.
Towing capacityCan your truck safely tow that trailer? Checks tow rating and payload.Trip fuel costType two cities and get the real driving distance and fuel bill.Power station runtimeHow long a battery power station runs your gear on one charge.Solar sizingHow many watts of panels your daily usage actually needs.Inverter sizingWhat size inverter covers your appliances, surge included.Cargo capacityHow much payload is left after gear, water, and passengers.Boondocking daysHow long your water, battery, and propane last off-grid.Propane durationHow many days a propane tank lasts at your usage.Generator sizingWhat size generator starts and runs your rig, AC included.Wire gaugeThe right wire size for any 12V run without voltage drop.RV depreciationWhat an RV is worth as it ages, with rates per year.