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1/4 Mile Calculator

Have Fun Racing...the safe way!



This calculator will calculate the approximate 1/4 mile time and trap speed of your vehicle. To do so, enter in the peak wheel horsepower of the vehicle, and the vehicle weight including driver, in the form below. Please note, all calculations are only approximations, for reference purposes and your actual times will vary depending on climate, each vehicle; its condition, tuning, fuel and modifications.

1/4 Mile Calculator

Horsepower [?] :
Vehicle Weight [?] :

Your approximate 1/4 mile time would be:
Your approximate trap speed would be:

Calculate 1/4 Mile ET From Horsepower


Car weight:

Wheel horsepower

Flywheel horsepower

Horsepower:


1/4 Mile elapsed time =


This calculator estimates your quarter mile elapsed time (ET) when given the weight of the car and flywheel or wheel horsepower. A 17% driveline loss is assumed for flywheel HP.

1/8-MILE TO 1/4-MILE CONVERSION TABLE


The following table can be used to estimate what your car would run in the quarter-mile based on your 1/8-mile elapsed time. This table is useful for those of you who run on an 1/8-mile track and would like to know what this time equates to in the 1/4-mile. NOTE: Please keep in mind that this table is only an estimate of what your 1/4-mile time would be. Different cars with different modifications, such as different rear end gears, will react differently. Your car may be a little quicker than this table shows, or a little slower. Again, this table is not exact, but simply a tool for estimating.

1/8-mile ET 1/4-mile ET
1/8-mile ET 1/4-mile ET
1/8-mile ET 1/4-mile ET
1/8-mile ET 1/4-mile ET
7.80 
6.8  10.61 
8.55  13.34 
10.3  16.07 
5.05  7.88 
6.85  10.69 
8.6  13.42 
10.35  16.15 
5.1  7.96 
6.9  10.76 
8.65  13.49 
10.4  16.22 
5.15  8.03 
6.95  10.84 
8.7  13.57 
10.45  16.30 
5.2  8.11 
10.92 
8.75  13.65 
10.5  16.38 
5.25  8.19 
7.05  11.00 
8.8  13.73 
10.55  16.46 
5.3  8.27 
7.1  11.08 
8.85  13.81 
10.6  16.54 
5.35  8.35 
7.15  11.15 
8.9  13.88 
10.65  16.61 
5.4  8.42 
7.2  11.23 
8.95  13.96 
10.7  16.69 
5.45  8.50 
7.25  11.31 
14.04 
10.75  16.77 
5.5  8.58 
7.3  11.39 
9.05  14.12 
10.8  16.85 
5.55  8.66 
7.35  11.47 
9.1  14.20 
10.85  16.93 
5.6  8.74 
7.4  11.54 
9.15  14.27 
10.9  17.00 
5.65  8.81 
7.45  11.62 
9.2  14.35 
10.95  17.08 
5.7  8.89 
7.5  11.70 
9.25  14.43 
11  17.16 
5.75  8.97 
7.55  11.78 
9.3  14.51 
11.05  17.24 
5.8  9.05 
7.6  11.86 
9.35  14.59 
11.1  17.32 
5.85  9.13 
7.65  11.93 
9.4  14.66 
11.15  17.39 
5.9  9.20 
7.7  12.01 
9.45  14.74 
11.2  17.47 
5.95  9.28 
7.75  12.09 
9.5  14.82 
11.25  17.55 
9.36 
7.8  12.17 
9.55  14.90 
11.3  17.63 
6.05  9.44 
7.85  12.25 
9.6  14.98 
11.35  17.71 
6.1  9.52 
7.9  12.32 
9.65  15.05 
11.4  17.78 
6.15  9.59 
7.95  12.40 
9.7  15.13 
11.45  17.86 
6.2  9.67 
12.48 
9.75  15.21 
11.5  17.94 
6.25  9.75 
8.05  12.56 
9.8  15.29 
11.55  18.02 
6.3  9.83 
8.1  12.64 
9.85  15.37 
11.6  18.10 
6.35  9.91 
8.15  12.71 
9.9  15.44 
11.65  18.17 
6.4  9.98 
8.2  12.79 
9.95  15.52 
11.7  18.25 
6.45  10.06 
8.25  12.87 
10  15.60 
11.75  18.33 
6.5  10.14 
8.3  12.95 
10.05  15.68 
11.8  18.41 
6.55  10.22 
8.35  13.03 
10.1  15.76 
11.85  18.49 
6.6  10.30 
8.4  13.10 
10.15  15.83 
11.9  18.56 
6.65  10.37 
8.45  13.18 
10.2  15.91 
11.95  18.64 
6.7  10.45 
8.5  13.26 
10.25  15.99 
12  18.72 
6.75  10.53