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Camping & RV Math Center

Trip time, fuel, campsite budgets, water, electricity, storage and measured weight arithmetic. 50 tools with purposes, formulas and worked examples.

Simple mode uses starting defaults for extra scenario controls. Advanced exposes those controls where available. Change an entry, then press Calculate.

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Formula, calculation steps & example

All 50 tools: purposes and formulas

RV trip driving time — RV trip driving time using your entered measurements and assumptions.
Result = (A ÷ B); A = Trip miles, B = Average moving mph
Travel day stop time — Travel day stop time using your entered measurements and assumptions.
Result = ((A × B) ÷ 60); A = Stops, B = Minutes per stop
Travel day total time — Travel day total time using your entered measurements and assumptions.
Result = ((A + B) + C); A = Driving hours, B = Stop hours, C = Setup hours
RV trip fuel gallons — RV trip fuel gallons using your entered measurements and assumptions.
Result = (A ÷ B); A = Trip miles, B = Measured miles per US gallon
RV trip fuel budget — RV trip fuel budget using your entered measurements and assumptions.
Result = (A × B); A = Fuel US gallons, B = Price per US gallon
Fuel range from entered usage — Fuel range from entered usage using your entered measurements and assumptions.
Result = (A × B); A = Usable fuel US gallons, B = Measured miles per US gallon
Fuel reserve range arithmetic — Fuel reserve range arithmetic using your entered measurements and assumptions.
Result = (A × B); A = Reserve US gallons, B = Measured miles per US gallon
Fuel remaining after distance — Fuel remaining after distance using your entered measurements and assumptions.
Result = (A - (B ÷ C)); A = Starting US gallons, B = Distance miles, C = Measured miles per US gallon
Detour fuel budget — Detour fuel budget using your entered measurements and assumptions.
Result = ((A ÷ B) × C); A = Extra miles, B = Measured mpg, C = Price per US gallon
Recorded whole-trip average speed — Recorded whole-trip average speed using your entered measurements and assumptions.
Result = (A ÷ B); A = Distance miles, B = Total elapsed hours
Daily camping water budget — Daily camping water budget using your entered measurements and assumptions.
Result = (A × B); A = People, B = Entered liters per person per day
Trip water usage budget — Trip water usage budget using your entered measurements and assumptions.
Result = (A × B); A = Daily usage L, B = Trip days
Fresh tank usage days — Fresh tank usage days using your entered measurements and assumptions.
Result = (A ÷ B); A = Usable fresh water L, B = Measured daily use L
Fresh water load mass — Fresh water load mass using your entered measurements and assumptions.
Result = (A × B); A = Volume L, B = Water density kg/L
Gray tank fill-time estimate — Gray tank fill-time estimate using your entered measurements and assumptions.
Result = (A ÷ B); A = Available tank volume L, B = Measured gray inflow L/day
Black tank fill-time estimate — Black tank fill-time estimate using your entered measurements and assumptions.
Result = (A ÷ B); A = Available tank volume L, B = Measured inflow L/day
Tank remaining volume — Tank remaining volume using your entered measurements and assumptions.
Result = (A - B); A = Tank volume L, B = Current liquid volume L
Water tank fill time — Water tank fill time using your entered measurements and assumptions.
Result = (A ÷ B); A = Required volume L, B = Measured flow L/min
Shower water arithmetic — Shower water arithmetic using your entered measurements and assumptions.
Result = ((A × B) × C); A = Measured flow L/min, B = Running minutes, C = Shower count
Dishwashing water budget — Dishwashing water budget using your entered measurements and assumptions.
Result = ((A × B) × C); A = Measured L per wash, B = Washes per day, C = Trip days
Camp appliance energy — Camp appliance energy using your entered measurements and assumptions.
Result = (A × B); A = Measured watts, B = Run hours per day
Daily camp electricity subtotal — Daily camp electricity subtotal using your entered measurements and assumptions.
Result = ((A + B) + C); A = Lighting Wh, B = Refrigeration Wh, C = Devices Wh
Nominal camper battery energy — Nominal camper battery energy using your entered measurements and assumptions.
Result = (A × B); A = Nominal voltage V, B = Capacity Ah
Battery usable energy assumption — Battery usable energy assumption using your entered measurements and assumptions.
Result = (A × (B ÷ 100)); A = Nominal energy Wh, B = Entered usable share %
Camp battery energy usage days — Camp battery energy usage days using your entered measurements and assumptions.
Result = (A ÷ B); A = Assumed usable energy Wh, B = Measured daily draw Wh
Inverter input energy estimate — Inverter input energy estimate using your entered measurements and assumptions.
Result = (A ÷ (B ÷ 100)); A = AC output energy Wh, B = Measured efficiency %
Entered solar harvest estimate — Entered solar harvest estimate using your entered measurements and assumptions.
Result = ((A × B) × (C ÷ 100)); A = Panel watts, B = Entered equivalent sun hours, C = Entered net yield %
Daily energy balance — Daily energy balance using your entered measurements and assumptions.
Result = (A - B); A = Harvested energy Wh, B = Consumed energy Wh
Recorded charging energy — Recorded charging energy using your entered measurements and assumptions.
Result = (A × B); A = Average measured charging watts, B = Charging hours
Inverter idle energy budget — Inverter idle energy budget using your entered measurements and assumptions.
Result = (A × B); A = Measured idle watts, B = Idle hours
Campsite fee budget — Campsite fee budget using your entered measurements and assumptions.
Result = (A × B); A = Nights, B = Nightly fee
Camping trip subtotal — Camping trip subtotal using your entered measurements and assumptions.
Result = (((A + B) + C) + D); A = Fuel cost, B = Campsite cost, C = Food cost, D = Other cost
Camping trip cost per person — Camping trip cost per person using your entered measurements and assumptions.
Result = (A ÷ B); A = Trip cost, B = People sharing cost
Camping cost per travel day — Camping cost per travel day using your entered measurements and assumptions.
Result = (A ÷ B); A = Trip cost, B = Travel days
Camping meal portions — Camping meal portions using your entered measurements and assumptions.
Result = ((A × B) × C); A = People, B = Meals per day, C = Trip days
Food portion budget — Food portion budget using your entered measurements and assumptions.
Result = (A × B); A = Meal portions, B = Cost per portion
Measured ice replacement budget — Measured ice replacement budget using your entered measurements and assumptions.
Result = ((A × B) × C); A = Ice bags per day, B = Cost per bag, C = Trip days
Consumable trip share — Consumable trip share using your entered measurements and assumptions.
Result = ((A ÷ B) × 100); A = Trip consumed units, B = Purchased units
Camp laundry budget — Camp laundry budget using your entered measurements and assumptions.
Result = (A × (B + C)); A = Loads, B = Wash cost per load, C = Dry cost per load
Trip road fee subtotal — Trip road fee subtotal using your entered measurements and assumptions.
Result = ((A + B) + C); A = Tolls, B = Parking, C = Other road fees
Rectangular storage bin volume — Rectangular storage bin volume using your entered measurements and assumptions.
Result = (((A × B) × C) ÷ 1000); A = Length cm, B = Width cm, C = Height cm
Packed item footprint — Packed item footprint using your entered measurements and assumptions.
Result = ((A × B) ÷ 10000); A = Length cm, B = Width cm
Entered cargo mass subtotal — Entered cargo mass subtotal using your entered measurements and assumptions.
Result = (((A + B) + C) + D); A = Gear kg, B = Food kg, C = Water kg, D = Other kg
Payload arithmetic from entered limit — Payload arithmetic from entered limit using your entered measurements and assumptions.
Result = (A - B); A = Entered payload limit kg, B = Entered cargo and occupant mass kg
Recorded axle mass total — Recorded axle mass total using your entered measurements and assumptions.
Result = (A + B); A = Recorded front axle kg, B = Recorded rear axle kg
Recorded rear axle mass share — Recorded rear axle mass share using your entered measurements and assumptions.
Result = ((A ÷ B) × 100); A = Recorded rear axle kg, B = Recorded total mass kg
Packed bin average density — Packed bin average density using your entered measurements and assumptions.
Result = (A ÷ B); A = Bin contents kg, B = Bin interior L
Rectangular tent floor area — Rectangular tent floor area using your entered measurements and assumptions.
Result = (A × B); A = Tent length m, B = Tent width m
Rectangular awning shade area — Rectangular awning shade area using your entered measurements and assumptions.
Result = (A × B); A = Awning length m, B = Awning projection m
Campsite walk time — Campsite walk time using your entered measurements and assumptions.
Result = ((A ÷ B) × 60); A = Walk distance km, B = Average walking km/hour

Definitions and source references

Unit definitions and selected model references:

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