Free tools
Free EV calculators for engineers, owners and founders
Size a battery pack, a motor or a BMS; find real-world range, charging time and cost; see what you save over petrol; and test a charging-station business case. No sign-up — every result has a shareable link and a downloadable PDF report.
For engineers & students
Battery Pack Calculator
Cells in series and parallel, pack voltage, kWh, weight and current for any cell.
Open calculatorMotor Power & Torque Calculator
kW for top speed, gradient and acceleration; torque and RPM.
Open calculatorBMS Topology Selector
Centralised, modular or distributed — and which balancing.
Open calculatorFor EV owners & buyers
For entrepreneurs
Shareable
Your inputs live in the page link — copy it or send it on WhatsApp and the other person sees the same result.
Transparent
Every calculator shows its formulas and assumptions, so you can check the numbers and use them in a report or viva.
Built by EV trainers
The same methods we teach in our battery, BMS, motor and charging courses — with hands-on kits.
Turn this into a career
Learn EV engineering hands-on
Courses with DIY hardware kits, live classes, lab practice and placement support — AICTE NEAT 2.0 and ASDC aligned.