Enter your original and new tire sizes into the table below and select a base speed to calculate your speedometer's offset and your vehicles actual speed. Your vehicle's speedometer reading is based on the diameter of the original tires so when you install larger or smaller tires, your speedometer reading will no longer be accurate.
Additionally, the greater the difference in tires size and the faster you drive, the more inaccurate your speedometer will be. Ideally, you should install new ring and pinion gears see out gear ratio calculator or an engine programmer to adjust for the new tires, however, until then, you can calculate your estimated speed by dividing your new tire diameter by the OEM tire diameter and multiplying that by your vehicle speed.
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For reference use only. Filthy Motorsports Crawlpedia is proudly supported by Filthy Motorsportsa specialty off-road racing and 4x4 parts shop in Boulder, Colorado. Advertise Here! Street Legal Laws To find the street legal laws for your state including maximum suspension lift heights and tire size rules visit LiftLaws.
New Tire Diameter:. Actual Speed:. Calculated actual speed is only an estimate.Browse our extensive Client Wins library detailing how we handle complex clients, objectives, and markets, then schedule a consultation today. Refinancing is all about discovering new opportunities to achieve your goals faster. Consider your options:. All In like family.
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Consider your options: Access equity for remodel, debt payoffs, education, or investments Switch to a shorter term to pay off your loan faster Use home equity to get rid of your mortgage insurance Moving within years? An interest only loan can minimize payments Get Started Contact Us.The MPG Calculator Miles Per Gallon Calculator will instantly calculate the MPG of any vehicle if you simply enter in the readout on the odometer at the previous gas fill up, the readout on the odometer at the current gas fill up, and the total amount of gas purchased in gallons to travel the distance between the two odometer readouts.
Let's be honest - sometimes the best mpg calculator is the one that is easy to use and doesn't require us to even know what the mpg formula is in the first place!
But if you want to know the exact formula for calculating mpg then please check out the "Formula" box above. You can get a free online mpg calculator for your website and you don't even have to download the mpg calculator - you can just copy and paste!
Click the "Customize" button above to learn more! Calculator Pro Calculators. Odometer at previous fill-up:. Odometer at current fill-up:. Gallons of gas purchased:. Thank us with a "Like":.
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Gas Mileage (MPG) Calculator
Select additional packages to add to your calculator. Anyone who uses your calculator must enter an email address or phone number. Analytics Package. Gain valuable insights with real-time statistics and analytics for your calculator.
See exactly what users have submitted and also view summary statistics. Enterprise Package. Support Package. Skip the support lines and receive priority one-on-one support from our customer service team. Required link back. Customize Calculations - unlimited. No link. MPG Definition The MPG Calculator Miles Per Gallon Calculator will instantly calculate the MPG of any vehicle if you simply enter in the readout on the odometer at the previous gas fill up, the readout on the odometer at the current gas fill up, and the total amount of gas purchased in gallons to travel the distance between the two odometer readouts.Calculate metric or inch tire specs and compare to alternate tire sizes.
View size results with our tire visualizer and side by side comparison including speedometer error using the comparison tab. Use our tire size calculator to calculate the diameter, width, sidewall, circumference, and revolutions per mile of any tire.
Just type in a metric or standard size tire and click calculate. Inch measurement tires are fairly easy to understand however metric tires use a more difficult system to read. The first number on a metric tire is the width in millimeters. Divide this number by The third number generally preceded by an "R" is the wheel diameter.
The sidewall or aspect ratio are used in metric tire sizes to determine the overall height of a tire. The second number on a metric tire is to calculate the side wall measurement. The sidewall height is a percentage of the width of the tire. This second number is that percent. Our tire calculator makes this happen for you.
Gear Ratio Engine RPM Calculator
Just type in any tire size and click calculate. It also solves the problem of deciding what tire you would like to run if you have inch tire measurement in mind but can't find a company that manufactures that inch tire size.
Just fill in the inch measurements you are looking for and it will populate suggested tire sizes that are with in one inch bigger and smaller of the entered inch tire size. There are more possibilities and choices in metric tires so the use of a tire size calculator can be very useful. The tire size comparison calculator takes the measurements of two tires and compares the diameter, width, sidewall, circumference, and revolutions per mile.
Then as a bonus it shows examples of your speedometer reading with the first tire, and the actual speed you're traveling if you were to install the second tire.
A very useful tire calculator when searching for tires that are a different size than stock. Another tire size calculator we have is our speedometer correction calculator. This is valuable if you plan to or are already running bigger tires than stock, and want to know the speed you are actually traveling compared to you're speedometer reading.
A bigger tire has a larger circumference, thus traveling a further distance for each revolution. A speedometer reads the amount of revolutions your tires are making, not how far you are traveling. Therefore you are actually traveling faster than your speedometer says when you have larger tires than stock, and slower than you're speedometer says if you have smaller tires.
Our easy to use tire diameter calculators will always be useful at one time or another. A tire size conversion calculator or tire diameter calculator is the best way to get the answers you are looking for when it comes to tire sizes.Use this gas mileage calculator to easily calculate the gas mileage of a vehicle: car, bus, truck, etc. Fuel Efficiency. The MPG illusion. To calculate gas mileage, using our MPG calculator or otherwise, you need to know three things: the previous reading of your odometer in miles or kilometersthe current reading of the odometer, and the amount of fuel you put in your tank during the previous refill.
That is all. Our online gas mileage calculator supports both gallons and miles, as well as liters and kilometers. If you supply price per gallon or price per liter, the gas calculator will also output gas cost per mile and miles per 1 USD, and if using the metric system the fuel cost will be in currency per kilometer e. Calculating the cost per mile or cost per kilometerwhich is something our mpg calculator also does, is just a matter of a slight modification of the above formula:.
In both formulas above "current" and "previous" reading refers to the reading of your odometer in miles or kilometers at the point of the previous refilling of the tank and at the current latest one. These are also the equations used in our MPG calculator. If you don't like the result from our MPG calculator and wonder how you can get a better gas mileage from your vehicle, we have some advice for you.
You can cover more miles or kilometers with less fuel by following these 10 tips for improving mpg that can result in significant savings in gas costs, especially when applied consistently:. All the above advice will help, but what can you do if you have been following the above advice, yet our mpg calculator still results in very high numbers for gas costs? It could be time for a new, more efficient car, or it could be just the gas price fluctuations over which, unfortunately, you have no direct influence.
Financial market fluctuations, natural disasters or extreme weather, crisis, as well the geographical area you are in and the local fuel suppliers all influence the price of gas. All you can do is try to observe them and predict when you can get a more decent price. First, basic terminology. The term fuel efficiency is used when speaking about gallons per mile or gallons per 1, miles, and liters per kilometer or liters per km.
The first is mostly used in the U. The relationship between the two is non-linear and improvements in miles per gallon can be very deceptive, while fuel efficiency in gallons per mile or liters per km are much more straightforward to understand, as noted on fueleconomy. The difference in change rate, or the rate of improvement in MPG relative to the gallons a vehicle uses per 1, miles stems from the non-linear relationship between the two metrics.
The illusion is more pronounced if you try to extrapolate or compare gas savings in lower MPG numbers to saving in higher MPG numbers.
This MPG illusion is the reason our gas mileage calculator also outputs fuel efficiency in gallons per 1, miles. Fuel efficiency and fuel economy can be tricky concepts as demonstrated above, but this also extends to averaging MPG data. For example, let us say you want to compare two types of cars: A and B.
You put two researches, one American and one French, to the task, with the first using miles per gallon as an efficiency metric, and the second using gallons per mile.
You have each researcher record the efficiency of 2 cars of each type the data available is the same for bothand the results recorded by them look like so:. Average above means the arithmetic mean. The US engineer will see that for type A the average is 2. The French will see that for type A the average is 0. The two researchers would come to different conclusions as they are using different metrics! Note that our MPG calculator will produce both metrics for you automatically.
But who is right in the above example? Most people would argue that when we calculate gas efficiency we care about how much fuel we would need to cover a given distance.
In such a case the French researcher is correct, as the average is misleading the US researcher. The French will get it right by multiplying x 0. For type B both researchers will correctly estimate that gallons will be required for the same task. Therefore, type B is more efficient than type A. However, if you define efficiency as covering the greatest distance given a certain fuel amountthen the US researcher would be correct. If we give each car of type A a gallon of fuel, they will cover 5 miles combined while giving each car of type B a gallon of fuel, they will cover only 4 miles combined.When it comes to travelling in England, it can be difficult to determine how many miles per gallon that you get.
An Imperial gallon is not the same as a regular gallon and sometimes the gas station will charge you in pence per litre instead of based on the traditional measurements. This can be a hassle. Some British places use Imperial measurement s, which is 10 ounces to a cup, 20 to a pint, 40 to a quart and to a gallon. Dividing by 1. There are 3. And who wants to keep a calculator in the car where it might get hot and melt?
And who wants to keep a piece of paper handy that could get lost in the glove compartment or get mixed in with all the other papers that you keep there or on the floor where a loose drink could spill all over and ruin your work. Most people think MPG is not important, but the last thing you want to do is miscalculate and end up run out of gas in the middle of nowhere on a stretch of road or find out that your car is getting much less fuel efficiency than you once thought?
Any number of things can cause low fuel efficiency, so one way to be sure is to use an online calculator. Our free MPG calculator does all the work for you, fast and worry-free.
Our calculators are free from human error and you never have to worry about making a mess with it. Simply go to the calculator and type in:. Then you just hit the calculate button and in a split second, the results will appear telling you not only how many miles per gallon you got but how many gallons of fuel you used. If you have a social media site such as Twitter or Facebook, you can post it on your wall or download a widget to put on your web site absolutely free.
You need to know a few things though:. Getting your miles per gallon in the UK is quick, easy and accurate when you use our free calculator. Use it on your Facebook, Twitter or Digg page absolutely free or share it on your web site with your British friends who want to check their fuel efficiency by downloading a widget. Let's be honest - sometimes the best uk mpg calculator is the one that is easy to use and doesn't require us to even know what the uk mpg formula is in the first place!
But if you want to know the exact formula for calculating uk mpg then please check out the "Formula" box above. You can get a free online uk mpg calculator for your website and you don't even have to download the uk mpg calculator - you can just copy and paste!
Click the "Customize" button above to learn more! Calculator Pro Calculators. Amount Spent pounds :. Distance traveled miles :. Thank us with a "Like":.Fuel Consumption
Need multiple calculators? Not what you're looking for? Create a free account to access the embed code for the Basic version of this calculator! User Information Already have an account? Domain optional. Remove calculation limits and start customizing your calculator!Got a question about buying, owning or running your car during the coronavirus crisis? However, the actual figure will vary dramatically depending on traffic and weather conditions, and how smoothly or aggressively the car is being driven.
What Car? This means our tests are repeatable, because outside variables such as weather and traffic don't affect the results. Tests are carried out at Millbrook Proving Ground, a centre used for regulatory approved vehicle emissions testing.
Millbrook has the latest equipment for testing vehicles in a highly scientific manner. Like What Car? However, these official tests don't require the engine to be worked as hard, so the resulting figures often don't reflect what you're likely to be able to achieve in the real world.
The most efficient cars on sale today average almost 60mpg in What Car?
All engines burn fuel and air, but when you accelerate in a car with a turbo, this compresses the air first, increasing the amount of oxygen available to mix with the fuel, and giving the engine more power than it would otherwise have. In official tests, small, turbocharged engines also return higher MPG figures than bigger, naturally aspirated engines with similar power.
An engine burns less fuel at low revs, so changing up to a higher gear earlier and avoiding hard acceleration will improve your fuel economy. Simple steps such as closing your car's windows and clearing out the boot to reduce weight will also help.
For more fuel saving tips, click here. To find out more about WLTP, click here. However, because RDE figures are less repeatable, they're currently only being used to verify certain pollutants, such as NOx.
True MPG calculator. So, what are the best and worst performing cars?. EV charging points are closer than you think Discover the electric vehicle charging points closest to you with our handy online tool. How do you calculate MPG?
How accurate are official MPG figures? What effect do turbos have on MPG? How can I improve my fuel economy?
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