100% free · no signup
Free tools for RV, van & overland life
Practical, no-signup calculators and helpers built by people who actually camp out of their rigs.
RV Leveling Block Calculator
Match two bubble levels and get exact blocks-per-tire for any four-wheeled RV — camper van, motorhome, or truck camper. Look up your rig by make/model/year or enter your own measurements.
Open the calculator →
Can I Tow It?
The towing check most buyers skip: tongue weight plus passengers and cargo has to fit your truck's payload sticker — not just the tow rating. Check every limit at once and see which one binds.
Run the safety check →
How Long Can We Boondock?
Fresh, grey, and black tank duration for your crew and habits — including the part everyone learns the hard way: the grey tank usually fills before the fresh runs dry.
Plan your water →
Propane Duration
How long a 20-lb tank really lasts running the furnace in the cold — honest duty-cycle math from your furnace BTU and the overnight low, plus water heater, stove, and fridge.
Do the math →
Will It Trip the Breaker?
Toggle your appliances against a 30/50-amp pedestal or your generator's real starting watts — including A/C surge, soft starts, and altitude derating.
Check your loads →
Camper Power & Climate Planner
Size an EcoFlow battery, charging, and air-conditioning kit to how you actually camp — or flip it around and rank which vehicles best fit your power needs.
Plan your kit →
Coming soon
More RV tools
Next up: tire pressure by axle weight, winterization antifreeze amounts, and a "will my trailer scrape?" driveway checker.
About S'more's Outdoors
S'more's Outdoors builds small, free, ad-supported tools for the RV and van-life community — no accounts, no subscriptions, just things that are useful when you're parked for the night.