Build and tune with a reference point
Use the engine, boost and fuel calculators to compare displacement, compression, airflow, injector sizing, boost pressure and fuel demand before parts are ordered or a map is revised.
100 CALCULATORS / ALL LIVE
THE NUMBERS
BEHIND FASTER.
100 working motorsport calculators for race engineers, builders, drivers and serious performance enthusiasts.
Explore calculators 100 working tools
QUICK CALC / POWER-TO-WEIGHT LIVE
LIVE CALCULATOR
Power-to-Weight Ratio
Power-to-weight344.828 hp/tonne
FORMULA / Power ÷ vehicle mass
Ideal theoretical result. Validate against manufacturer data, component limits and your race-series regulations before safety-critical use.
Engineering formulas shownEvery tool explains the calculation used.
100 calculators—all liveNo placeholders or “coming soon” cards.
Assumptions made explicitEstimates are identified honestly and clearly.
HOW MOTORSPORT MATH HELPS
Turn setup questions into clear numbers.
Motorsport Math is built for the practical moments before a build, dyno session, test day or race weekend: when you know the decision you need to make, but want the formula, units and assumptions in front of you.
Check the setup before changing hardware
Drivetrain, tyre, brake and chassis tools help you compare gearing, wheel fitment, pressure changes, brake balance, spring rates, motion ratios and corner-weight numbers in one place.
Plan the session, then validate at the car
Aerodynamic and race-strategy calculators give fast estimates for drag, downforce, lap speed, fuel use and pit stops. Treat the results as planning numbers, then validate them with real measurements and rules.
MeasureStart with values from the car, part supplier, dyno sheet, data logger or race notes.
CompareChange one input at a time to see what actually moves the result.
ValidateCheck safety-critical choices against manufacturer data, series regulations and professional judgement.
THE COMPLETE TOOLBOX
Find your calculation.
From the combustion chamber to the chequered flag—every calculator is ready to use.
100 tools
01EngineEngine DisplacementOPEN 02EngineCylinder DisplacementOPEN 03EngineBore SizeOPEN 04EngineStroke LengthOPEN 05EngineBore-to-Stroke RatioOPEN 06EngineStatic Compression RatioOPEN 07EngineDynamic Compression RatioOPEN 08EngineCombustion Chamber VolumeOPEN 09EnginePiston Deck ClearanceOPEN 10EngineHead Gasket VolumeOPEN 11EnginePiston Compression HeightOPEN 12EngineConnecting Rod RatioOPEN 13EngineMean Piston SpeedOPEN 14EngineMaximum Safe Engine RPMOPEN 15EngineEngine Airflow RequirementOPEN 16EngineVolumetric EfficiencyOPEN 17EngineBrake Mean Effective PressureOPEN 18EngineIndicated Mean Effective PressureOPEN 19EngineHorsepower from TorqueOPEN 20EngineTorque from HorsepowerOPEN 21EngineCrank Power from Wheel PowerOPEN 22EngineWheel Power from Crank PowerOPEN 23EngineDrivetrain LossOPEN 24EnginePower-to-Weight RatioOPEN 25EngineTorque-to-Weight RatioOPEN 26BoostTurbocharger SizeOPEN 27BoostCompressor Pressure RatioOPEN 28BoostRequired Boost PressureOPEN 29BoostBoosted HorsepowerOPEN 30BoostNA Equivalent DisplacementOPEN 31BoostTurbo AirflowOPEN 32BoostTurbo Mass FlowOPEN 33BoostCorrected AirflowOPEN 34BoostCompressor Outlet TemperatureOPEN 35BoostIntercooler EfficiencyOPEN 36BoostIntercooler Heat RejectionOPEN 37BoostPost-Intercooler Air TemperatureOPEN 38BoostWastegate SizeOPEN 39BoostSupercharger Pulley RatioOPEN 40BoostSupercharger SpeedOPEN 41FuelFuel Injector SizeOPEN 42FuelInjector Duty CycleOPEN 43FuelInjector-Supported HorsepowerOPEN 44FuelFuel Flow RateOPEN 45FuelBrake-Specific Fuel ConsumptionOPEN 46FuelAir-Fuel Ratio ConverterOPEN 47FuelLambda to AFROPEN 48FuelAFR to LambdaOPEN 49FuelFuel Pressure ChangeOPEN 50FuelInjector Flow at New PressureOPEN 51FuelFuel Pump CapacityOPEN 52FuelFuel Consumption per LapOPEN 53FuelRace Fuel RequiredOPEN 54FuelEthanol Fuel BlendOPEN 55FuelFuel Density CorrectionOPEN 56DrivetrainGear RatioOPEN 57DrivetrainFinal Drive RatioOPEN 58DrivetrainOverall Drive RatioOPEN 59DrivetrainRoad Speed from RPMOPEN 60DrivetrainEngine RPM from Road SpeedOPEN 61DrivetrainTyre Circumference & RolloutOPEN 62DrivetrainGear Speed TableOPEN 63DrivetrainRPM Drop Between GearsOPEN 64DrivetrainOptimum Shift PointOPEN 65DrivetrainGear Stack OptimiserOPEN 66DrivetrainDifferential Ratio ComparisonOPEN 67DrivetrainTop SpeedOPEN 68DrivetrainClutch Torque CapacityOPEN 69DrivetrainDriveshaft Critical SpeedOPEN 70DrivetrainChain & Sprocket RatioOPEN 71Tyres & BrakesTyre SizeOPEN 72Tyres & BrakesTyre DiameterOPEN 73Tyres & BrakesTyre Aspect RatioOPEN 74Tyres & BrakesTyre Circumference DifferenceOPEN 75Tyres & BrakesWheel OffsetOPEN 76Tyres & BrakesWheel BackspacingOPEN 77Tyres & BrakesWheel Fitment & ClearanceOPEN 78Tyres & BrakesTyre Pressure Temperature CorrectionOPEN 79Tyres & BrakesHot-to-Cold Tyre PressureOPEN 80Tyres & BrakesTyre LoadOPEN 81Tyres & BrakesBrake BiasOPEN 82Tyres & BrakesBrake TorqueOPEN 83Tyres & BrakesMaster Cylinder SizeOPEN 84Tyres & BrakesBrake Pedal RatioOPEN 85Tyres & BrakesStopping DistanceOPEN 86ChassisWheel RateOPEN 87ChassisSpring RateOPEN 88ChassisMotion RatioOPEN 89ChassisCoilover Spring PreloadOPEN 90ChassisSuspension Natural FrequencyOPEN 91ChassisAnti-Roll Bar StiffnessOPEN 92ChassisCorner Weight PercentageOPEN 93ChassisCross Weight PercentageOPEN 94ChassisWeight TransferOPEN 95ChassisCentre of Gravity HeightOPEN 96AerodynamicsAerodynamic DownforceOPEN 97AerodynamicsAerodynamic DragOPEN 98Race StrategyQuarter-Mile PerformanceOPEN 99Race StrategyLap Time & Average SpeedOPEN 100Race StrategyRace Fuel & Pit-Stop StrategyOPEN
Less guessing.
More engineering.
Motorsport Math brings the calculations normally buried in spreadsheets, workshop notebooks and engineering textbooks into one fast, accessible platform.
Enter the toolbox