Vehicle Tools

Quick calculators and lookups to back up every diagnosis.

Use these tools alongside the guides to confirm trouble codes, compare tyre sizes, plan fuel costs, and choose the right battery fitment.

Featured Tools

Match group size, terminal layout, and CCA for the right replacement.

Lookup Battery Fitment

Estimate the cold cranking amps needed for your engine and climate.

Estimator Cold Starts

Analyze cylinder balance and compression spread in seconds.

Analyzer Engine Health

Calculate concentrate and water amounts for the right mix.

Calculator Cooling System

Convert MPG and L/100km, estimate costs, and track fuel economy changes.

Calculator Fuel Use

Understand STFT and LTFT readings to spot lean or rich conditions.

Interpreter Fuel & Air

Map P0301-P0312 codes to cylinders using common layouts.

Helper Misfire Diagnosis

Decode check engine light codes and understand common causes fast.

Code Lookup Diagnostics

Estimate how long a key-off draw will drain your battery.

Calculator Electrical

Estimate road speed from RPM, gearing, and tyre diameter.

Calculator Gearing

Compare tyre sizes to keep speedometer, clearance, and gearing in line.

Calculator Fitment