Hand Calculating Mileage
Senior User
Joined: Jun 2005
Posts: 321
Likes: 2
I used to keep a little notepad in my glovebox with 3 columns.
1. Mileage
2. Gallons
3. MPG
To calculate your MPG substract your mileage from the prior mileage. Divide that result from with your total gallons at fillup to get the mpg. After so many entries you can add up all the mpg's and divide it by the number of entries to get your average mpg. If you have an IPOD touch there's a free gas app called Gas Chubby which is what I use. Gas Chubby also pops up reminders for service ie. oil changes, filter changes, etc.
1. Mileage
2. Gallons
3. MPG
To calculate your MPG substract your mileage from the prior mileage. Divide that result from with your total gallons at fillup to get the mpg. After so many entries you can add up all the mpg's and divide it by the number of entries to get your average mpg. If you have an IPOD touch there's a free gas app called Gas Chubby which is what I use. Gas Chubby also pops up reminders for service ie. oil changes, filter changes, etc.
Senior User
Joined: Jun 2005
Posts: 321
Likes: 2
I exported my gas calculations from my app into a pdf file so you can see an example of what it looks like.
Mileage Calculations
Mileage Calculations
New User
Joined: Jul 2010
Posts: 21
Likes: 0
From: Medford, OR
I use an Excel spreadsheet to calculate mileage by the tank and cumulative, cost per mile by the tank and cumulative and also to keep a running total of all maintenance and repair costs. I also added a comments column so I know when I was pulling my 13,500 pound 5th wheel trailer and that is why the MPG was so low for that tank. I am averaging 13.20 MPG with a .23 cost per mile. 
Laughing Gas
Joined: Feb 2007
Posts: 950
Likes: 6
From: Waco, Texas
I have excel spreadsheet on my smartphone. I have an ongoing "hand calculation" and also the "lie-o-meters" numbers. Just like others, I have a rather live view of my costs. It has really come in handy on trips. It has confirmed that the lie-meter is and was not that far off on the longer trips.
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Banned
Joined: Jan 2003
Posts: 1,457
Likes: 0
From: Grande Prairie, AB
Trending Topics
Senior User
Joined: Jun 2005
Posts: 321
Likes: 2
The Gas Chubby app is for both the IPOD touch and Iphone. It's free or you can get the ad free for a couple bucks.
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