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Quarter Mile time calculator

"You still owe me a 10 second car" - Fast & Furious"

Please note that this calculator cannot be more than 95% accurate for every make and model and does not take into account the age of a car, windspeed and gearing and air temperature.

This calculator has been based upon a number of theories* of drag time calculations and our own research from car performance data statistics.

We have weighted the theories to give the most accurate results as each of the theories skew results for different hp engines. *Professor G T Fox, Patrick Hale ( Auto Math Handbook) . We hope to fine tune these results a little further and would welcome your feedback.

To calculate your approximate 1/4 mile time enter the hp & weight in KG (not lb)

HP   Weight kg (incl driver!)

1/4 mile time

It is an interesting exercise to see what the power requirements and weight limits are to meet your ideal strip time. The times shown are effectively the best most drivers can hope to achieve.

Q) I can't enter drive train air temps, altitude or any other essential factors.
A) This is a very simple calculator and takes averaged results. Larger power figures are skewed to assume RWD and lower power figures are assumed to be FWD. We hope to have a more accurate calculator with extra options to fine tune this further and welcome all feedback.

Q) How accurate is the calculator.
A) It can only be as accurate as the data that has gone into it. Most visitors report it being within .3 of a second of their best time but there have been one or two that have been wildly inaccurate but these are generally down to the use of slicks and other pro drag setup factors that we have not included. For street cars you can realistically expect to get within .5 of a second of the indicated time, depending on your change times and getting a good start.

Q) Can I link to this quarter mile calculator in my favourite forum or my own website?
A) Yes links to this page are very welcome and always appreciated. However we do not have an option for embedding the calculator into other sites (yet).

If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile.

Ricer or RacerRemapping guideQuarter mile time calculatorBuild a 10 second car


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Your Constructive comments on this article

7 Responses to “quarter mile time Calculator 1/4 mile from weight and bhp”

  1. doug says:

    1/4 mile calculator is not even close to being accurate.
    cmon if i have 3400 # car with 650 ponies = 14.5 et? you gotta see the humor in that right? thats nowhere even close to , ya i said that alread

  2. Jazman says:

    This is actually pretty accurate. I have 195hp and about 1200kg weight including me inside and i recently had 14.8 time. Could’ve done better but had grip issues. But this is quite accurate.

  3. TCJBOLDIE says:

    IS power for the calculation flywheel or at the wheels power figure???

  4. TCJBOLDIE says:

    11.64 by your method 1350kg with 450 FW HP
    Morosso slide calculator says 11.6 with 1350kg and 490 HP at the wheels so close enough 4 me

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