Resources Calculator
Max Ethanol Percentage Calculator
Input your vehicle's fuel data to calculate the maximum achievable ethanol percentage with a full tank.
Max Ethanol Percentage With Filled Tank: -%
Target Ethanol Calculator
Calculate the amount of ethanol required to reach your target ethanol percentage and check if the mix fits in your fuel tank.
Gallons/Liters to Target: -
Will Target Mix Fit in Tank? -
Performance Calculations
Airflow Needed for Target HP
Airflow (lb/min): -
Pressure Ratio/Boost Pressure
Absolute Manifold Pressure (psi): -
Target Boost Pressure (psi): -
Pressure Ratio: -
Fuel Injector Calculator
Enter your vehicle's details to calculate injector flow for target crank horsepower.
Results
| Fuel Type | Non-ethanol gasoline (E0)- 14.7:1 | Pump gasoline (E10)- 14.1:1 AFR | E30- 12.99:1 AFR | E40- 12.42:1 AFR | E60- 11.28:1 AFR | E85- 9.8:1 AFR | E90- 9.5:1 AFR | E98- 9.0:1 AFR | Methanol- 6.4:1 AFR |
|---|---|---|---|---|---|---|---|---|---|
| Fuel flow needed per injector (lbs/hr) | |||||||||
| Fuel flow needed per injector (cc/min) |
Fuel Pump Size Calculator
This calculation is for TOTAL fuel flow to make target power. IF using a combination of direct and port injection, please subtract DI power to pick the appropriate PI injectors and fuel pump. Enter the required parameters to calculate fuel flow.
Fuel Flow per Injector: - cc/min
Fuel Flow (Vacuum Referenced/Return Style): - LPH @ - psi
Fuel Flow (Non Vacuum Referenced/Returnless): - LPH @ - psi
Power and Torque Calculations
Calculate HP from Torque and RPM
Horsepower (HP): -
Calculate Torque from HP and RPM
Torque (lb/ft): -
Calculate Torque (Nm) from kW and RPM
Torque (Nm): -
Calculate Kilowatt from Nm and RPM
Power (kW): -
ET/MPH/HP Calculator for Quarter Mile Runs
Calculate ET & MPH from HP and Weight
Elapsed Time (ET): -
Speed (MPH): -
Calculate HP from MPH and Weight
Horsepower (HP): -
Calculate HP from ET and Weight
Horsepower (HP): -
ET/MPH/HP Calculator for 1/8 Mile Runs
Calculate ET & MPH from HP and Weight
Elapsed Time (ET): -
Speed (MPH): -
Calculate HP from MPH and Weight
Horsepower (HP): -
Calculate HP from ET and Weight
Horsepower (HP): -
1/8th ~ 1/4th Mile Converter
The standard multiplier used for this converter is 1.555. If you want to change it, enter your preferred multiplier (e.g., 1.56, 1.57, 1.58):
1/8th Mile Stats
1/4th Mile Stats
G-Force Calculator
Calculate G-Force from HP, MPH & Weight
Accel is: -
Calculate G-Force from 60-Foot Time
G-Force: -
0-60 & Distance Calculator
0-60 MPH (1/8th Mile)
Your 0 to 60 time is: -
Estimate 60 Foot Time Calculator (Quarter-Mile ET)
Estimated 60 Foot Time: - seconds
Distance Of Margin Of Victory Calculator
Distance: - ft / - in
Engine Displacement Calculations
Calculate Cubic Inch Displacement of Your Engine
Engine is - CID or - liters
Calculate Stroke of Your Engine from CID & Bore
Stroke (inches): -
Calculate Bore of Your Engine from CID & Stroke
Bore (inches): -
Calculate 1/4 Mile ET Change
New ET from Weight Change
New ET: -
At KPH: - | MPH: -
New ET from HP Change
Your New 1/4 Mile ET is: -
Your New 1/4 Mile MPH is: -
Horsepower Required to Maintain Speed Calculator
This is just an approximation. Uses Cd (coefficient of Drag) and Square Foot Area of your vehicle to calc how much HP would be needed to run a certain speed. This is just the HP necessary to sustain that speed, not what your engine total HP is. I.E. It takes almost 197 HP to be able to run to 150 MPH. So, if your car only makes 180 HP, you won't be able to get to 150 MPH.
Air Drag Coefficients and Frontal Area Calculation
Coefficient of Drag
The aerodynamic "features" of a vehicle in motion are reflected in its drag coefficient values. Low coefficients indicate low air resistance. The following chart lists some ranges for various vehicles:
Vehicle Drag Coefficient
Description Low Medium High
----------------------------------------
Experimental 0.17 0.21 0.23
Sports 0.27 0.31 0.38
Performance 0.32 0.34 0.38
60's Muscle 0.38 0.44 0.50
Sedan 0.34 0.39 0.50
Motorcycle 0.50 0.90 1.00
Truck 0.60 0.90 1.00
Tractor-Trailer 0.60 0.77 1.20
Calculation of Frontal Area
Frontal area represents the front projection area of the vehicle. Use the following to calculate:
1. Calculate the area of a rectangle which would encompass the front of the vehicle (multiply width by the height). For motorcycles, use the handlebar width and an estimated "seat to helmet" height.
2. Adjust the figure obtained above for areas not included, such as top rounded corners, etc. Typical adjusting values are 85% for cars, 70% for motorcycles, and 100% for trucks.
Calculate HP For A Given Speed
Using your vehicle speed takes - HP to overcome air drag.
Rolling Resistance HP is -
For a total of - HP to run - MPH
Calculate Sea Level ET From Your DA
Enter ET, MPH, and DA to calculate corrected values.
| - | ET | MPH |
|---|---|---|
| Your Run | - | - |
| Corrected | - | - |