Free Golf Cart Tools & Calculators
Stop guessing. Check battery state of charge, identify your cart, plan range and charging cost, and dial in top speed with free owner-built calculators. No sign-up required.
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Cost of Ownership
See the true 5-year cost to own a cart, charging, maintenance, battery, insurance and resale, plus electric vs gas.
Open Tool DiagnoseTroubleshooter
Pick a symptom, won’t move, no power, slow, won’t charge, and get ranked causes, tests and fix guides.
Open Tool BuyBuyer’s Toolkit
A printable 25-point used-cart inspection checklist, negotiation tips and a fair-price check.
Open Tool ValueValue Calculator
Find what your used golf cart is worth, private-sale and dealer trade-in prices by brand, model, year and condition.
Open Tool IdentifySerial Number Decoder
Decode a Club Car, E-Z-GO, or Yamaha serial number into model year, model, and voltage.
Open Tool PlanRange & Cost Calculator
Estimate miles per charge, runtime, and charging cost for any lead-acid or lithium pack.
Open Tool TuneTop Speed Calculator
Find top speed from RPM, gear ratio, and tire size, plus speed gain from bigger tires.
Open Tool TestBattery Voltage Chart
Estimate state of charge from resting voltage for 36V, 48V, and 72V lead-acid or lithium packs.
Open Tool ChargeCharging Time Calculator
Estimate hours to full, energy used, and charging cost from battery capacity and charger amps.
Open Tool CompareLithium Savings Calculator
Compare lifetime cost of lithium vs lead-acid packs and find the year lithium pays for itself.
Open Tool TiresTire Size Calculator
See how bigger tires change top speed and speedometer reading, and what lift kit you need.
Open Tool WiringWire Gauge Calculator
Check voltage drop and find the right copper wire gauge for battery, motor, and accessory runs.
Open Tool IdentifyE-Z-GO Serial Lookup
Decode your E-Z-GO manufacturer code into model year, likely model, and voltage.
Open Tool IdentifyYamaha Year Lookup
Decode your Yamaha serial number into model, production year range, and voltage.
Open Tool MaintainBattery Watering Schedule
Get a watering interval and safe checklist for flooded lead-acid batteries by use and climate.
Open Tool ComplyStreet-Legal Checklist
See the federal LSV equipment your cart needs to be street legal, based on its speed.
Open Tool UpgradeController Amp Calculator
Match controller amps, solenoid rating, and cable gauge to your motor type and performance goal.
Open Tool WiringBattery Wiring Diagram
Generate the exact 36V, 48V, or 72V series wiring diagram for your battery setup, every jumper and main lead.
Open Tool FinderWhich Cart Should I Buy?
Answer 6 questions and get your top 3 golf cart matches with real used prices.
Open Tool CostCharge vs Gas Cost
Compare electric vs gas running cost per mile and your yearly fuel savings.
Open Tool SolarSolar Payback
See how much charging solar covers and how fast the panels pay for themselves.
Open Tool FitmentLift & Tire Fitment
Find the max tire size for your cart and lift, and the lift needed for bigger tires.
Open ToolHow to use the Golf Cart Lab tools
Every calculator on this page was built by golf cart owners to answer a real question with real numbers, not to sell you anything. There is no sign-up and nothing to install. Most tools follow the same pattern: enter a few details about your cart, such as voltage, tire size, daily miles, or a serial code, and get a clear result plus a short explainer on what the number means and what to do next.
A good place to start depends on your goal. Buying or selling? Use the value calculator and the buyer’s toolkit to price a cart and inspect it before you pay. Not sure what you have? Decode the year and model with the serial number decoder. Planning a trip or a battery swap? The range calculator and battery voltage chart tell you how far a charge goes and how full the pack is right now. Building for speed? Pair the top speed calculator with the controller amp calculator so the whole drivetrain is matched.
The results are honest estimates based on published specs and typical real-world losses, not guarantees, so always confirm against your own cart and labels before you spend money. If you want the full background behind a number, most tools link out to a detailed guide. Use the search box above to jump straight to any tool by keyword.
Frequently asked questions
Are the Golf Cart Lab tools free to use?
Which tool should I start with if I’m buying a used cart?
How do I find out what model and year my golf cart is?
How accurate are the golf cart calculators?
Do I need to create an account to use these tools?
Updated July 2026: rebuilt into the Golf Cart Lab index page layout.