Automotive Diagnostic Tools
The BTAT Automotive Diagnostic Tools app is available as a dedicated web app, with electrical calculators plus practice challenges.
Electrical Tools & Practice
Use the complete BTAT tool set on desktop or mobile, including calculators, circuit solvers, and electrical practice games.
Electrical Laws
Combined Ohm's Law and Watt's Law calculator for solving voltage, current, resistance, and power.
Unit Converter
Convert voltage, current, resistance, and power across common electrical scales.
Series Circuit Solver
Solve source voltage, current, total resistance, individual resistance, and voltage drops.
Parallel Circuit Solver
Solve total and branch values from the information you know.
Series-Parallel Calculator
Build a chain of series resistors and parallel groups and calculate circuit values.
Fuse Current
Estimate current from fuse millivolt drop using the app's fuse reference values.
Electrical Challenge
Practice electrical fundamentals, circuit calculations, meter use, relays, fuses, and voltage drop.
Diagnostic Challenge
Work through troubleshooting problems focused on circuit interpretation, fault isolation, and diagnostic strategy.
Website + Installable Tool
When the final site is hosted over HTTPS, the BTAT tools app can also function as an installable Progressive Web App on supported devices.