Use our automotive calculators and conversion charts to calculate horsepower, check fuel consumption, estimate 1/4 mile ET, and many every-day mechanic tasks.
Automotive Calculators
- 1/4 Mile ET Calculator
- CC to HP Calculator (For Small Engines)
- Compression Ratio Calculator
- Engine Displacement Calculator
- Fuel Consumption Calculator
- Horsepower Calculator
- Inch-Pounds to Foot-Pounds Converter (in-lb to ft-lb)
- Minutes to Decimal Hours Calculator
- Oil Mix Calculator | 2-Cycle
- Piston Speed Calculator
- Piston Valve Clearance Calculator
- What Date Is 90 Days From Today?
Conversion Charts
- Bolt Size Chart
- Chaps Size Chart
- Cubic Inch Compression Chart
- Inch to MM and Decimal Chart
- Metric to Standard Socket Conversion Chart
- Sheet Metal Gauge Chart
- Small Engine Ignition Coil Resistance Chart
- Socket Sizes In Order: Metric AND Standard
- Standard to Metric Socket Conversion Chart
- Torque Conversion Chart
- Wrench Spanner Size Conversion Chart