AutoTech
AutoTech

Automotive Calculator

Available on the iTunes App Store

AutoTech is an automotive calculator that offers the mechanic, technician or enthusiast quick computation of 35+ formulas.

Values may be entered in metric or US units. Shaking the device will clear the values you have entered. Shaking it again will load example values.

Formulas are organized in categories:


Aerodynamics

Drag (force)
Drag (horsepower)
Lift / Downforce
Lift-Induced Drag

Chassis

Lateral Acceleration
Lateral Weight Transfer
Overall Gear Ratio
Weight Distribution
Weight Transfer

Engine

Air Flow
Brake Mean Effective Pressure
Brake Specific Fuel Consumption
Combustion Chamber Volume
Compression Ratio
Displacement
Horsepower
Injector Flow Rate
Optimum Intake Runner Size
Peak Torque RPM
Piston Acceleration
Piston Speed
Port Velocity
Power Loss at Elevation
Supercharger Temperature Gain
Torque
Volumetric Efficiency

Performance

Circuit:
Average Lap Speed

Dragstrip:
ET and Speed
Horsepower

Suspension

Anti-roll Bar Rate
Coil Spring Rate
Leaf Spring Rate
Torsion Bar Rate

Tires

Effective Drive Ratio
Equivalent Drive Ratio
Speedometer Correction
Speed Ratings
Tire Diameter
Tire Stagger
Wheel Rate

Plus: Unit Converter

Acceleration
Area
Force
Length
Power
Pressure
Speed
Surface Tension
Temperature
Torque
Volume
Weight