Automotive Calculators
19+ professional automotive calculators for engine performance, tuning, and modifications. Based on the original Mark's Street And Strip InterConverter™.
Engine Performance
Calculate displacement, compression ratios, and carburetor sizing for optimal engine performance
Carburetor CFM Calculator
Calculate the correct carburetor CFM for your engine based on displacement and modification level
Compression Ratio Calculator
Calculate horsepower changes from compression ratio modifications
Engine Displacement Calculator
Calculate engine displacement from bore, stroke, and cylinder count
Engine Size Converter
Convert between cubic inches, liters, and cubic centimeters
Engine Volume Calculator
Calculate total engine volume from cylinder volume and count
Drivetrain & Gearing
Optimize gear ratios and analyze drivetrain performance for better acceleration and top speed
Gear Ratio Calculator
Calculate gear ratios, RPM, and speed relationships for optimal performance
Tire & Speed Calculator
Calculate speed changes from tire size modifications and gear ratios
RPM Calculator
Calculate engine RPM from speed, gear ratio, and tire diameter
Speed Converter
Convert between MPH, KPH, and other speed units
Tire Calculator
Calculate tire dimensions, revolutions per mile, and size comparisons
Performance Analysis
Analyze horsepower, torque, and overall vehicle performance metrics
Supercharger Calculator
Calculate horsepower gains from supercharger and forced induction systems
Torque & Horsepower Calculator
Convert between torque, horsepower, and RPM using automotive formulas
Volumetric Efficiency Calculator
Calculate engine breathing efficiency and airflow characteristics
Power-to-Weight Calculator
Calculate power-to-weight ratios for performance analysis
Power-to-Weight Ratio
Alternative power-to-weight ratio calculator with additional metrics
Ram Air Calculator
Calculate horsepower gains from ram air induction systems
Fluids & Weight
Calculate fluid capacities and weight distributions for optimal vehicle setup
Automotive Fluid Weight Calculator
Calculate weight and volume conversions for automotive fluids
Temperature Converter
Convert between Fahrenheit, Celsius, and other temperature units
Weight Converter
Convert between pounds, kilograms, ounces, and grams
📚About These Calculators
These automotive calculators are based on proven formulas and real-world experience from the original Mark's Street And Strip InterConverter™. They're designed for mechanics, racers, and automotive enthusiasts who need accurate calculations for engine modifications and performance tuning.
⚠️Safety Notice
These calculations are for educational and estimation purposes only. Always consult with qualified automotive professionals for engine modifications, tuning, and safety considerations. Actual results may vary based on specific conditions.