All camping and RV calculators
31 calculators with a transparent calculation path. Search for a term or filter by category.
31 calculators found
Battery
View category- Battery runtimeCalculate how long your house battery can power a load: capacity in Ah, battery type (LiFePO4, AGM, gel), power in watts, inverter – with a transparent calculation path.
- Ah ↔ Wh converterConvert amp-hours to watt-hours and vice versa – for 12 V, 24 V and LiFePO4 systems as well as power banks at 3.7 V. With a comparison across several voltages.
- Battery charge timeCalculate how long your charger or DC-DC charger needs to charge the RV battery – with state of charge, charging current, efficiency and the absorption phase for lead-acid.
- LiFePO4 battery sizeCalculate the required LiFePO4 capacity in Ah from daily consumption, off-grid days, depth of discharge and reserve – with AGM comparison, weight and the next standard size.
Electrical
View category- Power consumptionCalculate your RV's daily power consumption in Wh and Ah: fridge, lights, pump, laptop, furnace and 120 V appliances through the inverter – with presets and loss calculation.
- Inverter sizeCalculate the inverter wattage needed for a coffee maker, induction cooktop, hair dryer & co., the battery current at 12 V or 24 V and the daily losses from efficiency and idle draw.
- Voltage dropCalculate the voltage drop in a 12 V or 24 V wire from length, current and cross-section – with power loss, voltage at the load and recommendation (≤ 3%).
- Wire gaugeCalculate the minimum wire size for 12 V and 24 V circuits from current, length and permissible voltage drop – with AWG standard size and notes on ampacity and fusing.
- Shore power costCalculate electricity costs at the campground: consumption per day, electric heating, kWh price or flat rate – and from which consumption the flat rate pays off.
- Fridge consumptionCalculate the electricity (Wh, Ah) or propane consumption of your RV refrigerator per day – compressor, absorption or cooler – and how long the battery lasts with it.
- Power stationCalculate how long your power station (e.g. 500, 1,000 or 2,000 Wh) powers a cooler, laptop, phone and 120 V appliances – with inverter losses and usable capacity.
- USB-C charging timeCalculate the charging time of a smartphone, tablet or laptop via USB-C: battery in mAh or Wh, charger power, device limit and charge curve – also on a 12 V adapter in the RV.
- DC-DC chargerCalculate how many Ah your DC-DC charger puts into the house battery per hour of driving, how long the drive to the target state of charge takes and what the alternator must deliver.
Solar
View category- Solar outputCalculate the realistic solar output of your RV solar system in Wh and Ah per day – by location, month, mounting and system losses, with a transparent calculation path.
- Solar panel size (W)Calculate the required solar power in watts from your daily consumption, travel season and location – with reserve, mounting and a realistic performance ratio.
- Solar charge timeCalculate how many sunny days your solar system needs to charge the RV battery from one state of charge to another – including simultaneous consumption.
- Off-grid daysCalculate how many days your RV can stay off-grid with battery, solar system and consumption – with daily balance, coverage and reserve without sun.
Propane
View category- Propane tank durationCalculate how many days your 20, 30 or 40 lb propane tank lasts – with furnace, stove, fridge and water heater – and how many tanks you need for the trip.
- Propane usageCalculate your RV's daily propane consumption from furnace, stove, water heater and absorption fridge – with data sheet values, duty cycle and tank duration.
- Heating costCalculate your RV's heating costs per day and trip – with propane, a diesel heater or shore power – from heat output, running time, efficiency and energy prices.
Water
View category- Fresh water durationCalculate water usage per person and day (drinking, dishes, showers, toilet) and how long your fresh water tank lasts – including gray tank and trip needs.
- Gray water tankCalculate after how many days your RV's gray water tank is full – from water usage, gray water share and fill level – and whether the fresh or gray tank limits first.
- Shower waterCalculate the water usage per shower in an RV, how many showers a tank allows and how long the hot water from a 2.6 gal (10 L) water heater lasts.
- Water tank fill timeCalculate how long filling your fresh water tank takes – with a hose (gal/min) or jugs – and how much weight comes on board.
Weight
View category- PayloadCalculate the travel weight and remaining payload of your RV from GVWR, unloaded vehicle weight, occupants, water, propane and cargo – including a cargo carrying capacity check.
- Bike rackCheck whether your bikes fit on the rear rack and calculate the leverage: how much more load the rear axle carries and how much the front axle is unloaded.
- Roof loadAdd up solar panels, rooftop air conditioner, satellite dish, cargo box or roof tent and check them against your RV's permissible roof load – including the new vehicle height.
- Towing weightCheck towing capacity, tongue weight, GVWRs and gross combination weight for your motorhome and trailer combination – with the NHTSA tongue weight recommendation.
Travel
View category- Trip costCalculate the total cost of your RV trip: fuel, tolls, campgrounds, food, rental and excursions – with cost per trip day and per person.
- Fuel costCalculate fuel economy from fill-up data plus fuel amount, cost per trip and per 100 miles for your RV trip – with CO₂ emissions and a savings comparison.
- Campground costCalculate the total cost of your campground stay from site rate, persons, children, taxes, dog, electricity and extras – per night, in total and per person.