RevLogic

RevLogic – Engine Build Calculators

Build smarter. Tune with confidence.

RevLogic is the all-in-one engine calculator suite for racers, engine builders, mechanics, tuners, and performance enthusiasts. Whether you're building a two-stroke or four-stroke engine, RevLogic provides accurate, easy-to-use calculators to help you make informed decisions throughout your build.

From basic engine specifications to advanced performance calculations, RevLogic helps eliminate guesswork and saves valuable time in the garage.

Features

• 50+ precision engine calculators • Support for both two-stroke and four-stroke engines • Save and organize your engine builds • Metric and Imperial unit support • Fast, clean, and intuitive interface • Instant calculations with accurate formulas • Export build summaries for reference

Included Calculators Bottom End

• Engine Displacement • Static Compression Ratio • Dynamic Compression Ratio • Piston Speed • Piston Ring Gap • Reciprocating Inertia • Crankshaft Bob Weight • Target Compression Ratio Solver

Valvetrain

• Cam Timing • Valve Size & Lift • Valve Spring Calculator

Induction

• Airflow / Carb CFM • Carburetor Venturi Size • Airflow to Horsepower

Driveline

• Gear Ratio & RPM • Final Drive Optimizer

Performance

• Quarter Mile Horsepower Estimator

Cylinder Head

• Port Shape Converter • Squish Area Calculator

Fuel

• Fuel Injector Sizing • Fuel Pump Sizing • Ethanol / E85 Blend Calculator

Exhaust

• Exhaust Header Calculator

Tuning

• AFR Target Table • Spark Advance Recommendations • Altitude Correction

Forced Induction

• Effective Compression Ratio • Boost Calculator

Power Adders

• Nitrous Calculator

More calculators are added with every major update.

RevLogic Lite

Start for free with RevLogic Lite.

Lite includes essential calculators and allows you to save one active engine build, making it perfect for hobbyists and first-time users.

Upgrade to RevLogic Pro

Unlock the full potential of RevLogic with Pro.

Pro includes: • Access to every calculator • Unlimited saved engine builds • Advanced calculation tools • Detailed results and recommendations • Future premium features as they're released

Whether you're building a street engine, race engine, kart, dirt bike, motorcycle, or custom project, RevLogic gives you the tools you need to build with confidence.

Download RevLogic today and build smarter. Perform better.