AutoTech is an automotive calculator that offers the mechanic, technician or enthusiast quick computation of 50+ 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
Weight Distribution
Weight Transfer
Drivetrain
Axle Speed
Driveshaft Critical Speed
Gear Ratio
Overall Gear Ratio
Rear Wheel Torque
RPM After Shift
Engine
Air Flow
Brake Mean Effective Pressure
Brake Specific Fuel Consumption
Combustion Chamber Volume
Compression Ratio
Deck Height Clearance
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
Valve Curtain Area
Valve Spring Open Pressure
Valve Spring Rate
Volumetric Efficiency
Performance
Circuit:
Average Lap Speed
Dragstrip:
ET and Speed
Horsepower
Suspension
Angle Corrected Spring Rate
Anti-roll Bar Rate
Coil Spring Rate
Leaf Spring Rate
Stacked 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
Density
Force
Length
Power
Pressure
Speed
Surface Tension
Temperature
Torque
Volume
Weight