6calculators ready to use
8more on the way
6categories
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Pick the calculator that matches what you are powering. Each one shows the math and lists its sources.
Boat & Trolling Motor
Battery, run time and wiring answers for trolling motors and boat electronics.
Whole-Boat Power Budget Calculator
Add up the trolling motor, fish finders, livewell and lights, and see if your batteries last the day.
- Every battery bank checked
- Hours before each runs out
- Where the power goes
Trolling Motor Power Calculator
Run time at every speed, plus the battery, wire size and breaker to buy.
- Run time at every speed
- Battery size to buy
- Wire gauge and breaker
Fish Finder Battery Life Calculator
How long a battery runs your fish finder and sonar on a kayak, boat or the ice.
- Hours of run time
- Battery for your day
- Wire and fuse
Camping Power
Power stations, solar panels and inverters for camp.
Power Station & Solar Sizer Calculator
The power station size and solar watts that keep your camp gear running all trip.
- Power station size
- Solar to keep up
- Days of power
Inverter Run Time Calculator
How long a battery runs plug-in gear through an inverter, plus the inverter, cable and fuse.
- Run time in hours or days
- Inverter size and surge
- Cable and fuse
Off-Grid Cabin
Solar, batteries and generators for a cabin or hunting camp.Coming soonCabin Solar & Battery Sizer Calculator
Coming soonGenerator Sizing Calculator
Hunting & Ice Fishing
Heaters, heated gear and trail cameras in the cold.Coming soonPropane Heater Run Time Calculator
Coming soonHeated Gear Battery Life Calculator
Coming soonTrail Camera Battery Life Calculator
Batteries & Charging
Charging times and battery choices.Coming soonBattery Charging Time Calculator
Coming soonLithium vs AGM Cost Over Time Calculator