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Do you "Pre-Mix" Oil with Gasoline?
If so, you will find Gas Mix is the Quick, Easy, and Accurate way to store and calculate your mixes!

First, you create your presets, with descriptive names and their mix ratios. Then you can easily find the Gas amount for a given amount of Oil, or the Oil amount for a given amount of Gas. You can add the mix to history to keep track of the age and how often you have mixed. Finally, you can save notes such as repairs or motor oil changes, for each preset.

Gas Mix now supports all the common units: U.S. Gallons, Imperial Gallons, Liters, Ounces and MilliLiters. You can even choose to enter your Gas in U.S. Gallons and it will find Oil amount in Milliliters!

Use Gas Mix for all your 2-cycle powered engines:
-Outboard Boat Engines
-Snow Blowers
-Weed Trimmers
-Racing / Hi-Performance Engines
-And More...

And Why Should You Care?
Because the longevity of your small engine relies on mixing fuel in the proper proportion. Excessive oil may cause fouled spark plugs, poor performance, smoke and carbon build-up. Not enough oil, will reduce the lifetime of the engine, from poor lubrication of the piston and cylinder walls. With this app, you are sure to mix correctly.

What’s New

Version 5.0.0

This app has been updated by Apple to use the latest Apple signing certificate.

Completely New. New Name. New Icon. New App.
Unlimited Presets, with Notes section for each Preset you create.
US Gallons, Imp Gallons, Ounces, and mL. Gas to Oil, Oil to Gas.
**Note to Current v4 Users** - This update will not import your existing settings, due to major changes in the way data is loaded and saved. Please copy your ratios and copy your notes before applying this update. Future versions will not lose your data, sorry for any inconvenience, but this update is worth the effort.

Ratings and Reviews

3.6 out of 5
5 Ratings

5 Ratings

Rusch Motorsports ,

Features are AWESOME, but....

Downloaded, LOVE the ability to save multiple mixes for different rigs, (chainsaw, dirt bike, weed eater, etc)....

*** EDIT***

Contacted programmer, they are aware of the iOS 9.x clunkiness and are working on it, iOS 9.x compatibility update coming very soon. Great prompt customer service. A+

W.D.Cleancut ,

Must have to keep any 2 stroke running smooth

Tired of guessing how much oil to add to a half tank or having to buy small containers of oil that will only mix 5 gallons. Then this is the app for you. Start buying only the fuel you need and bigger containers of oil. Thats right just dial up the gas and the mix ratio and this app gives you the oil calulation instantly! Heres how it works, you buy 3 litres of fuel and want to know how much oil to use for a 25 to 1 mix, turn the dials and just like that you will see 120 ml of oil is needed. No more running the tank empty just buy what you need to top up and GAS MIX will do the rest!!!
I'ved worked on a lot of 2 stroke engines and believe me when I say a lot of engine problems are due to incorrect gas to oil ratio's. Not enough oil they run to hot! To much oil they gum up and run very rough!
The correct gas to oil ratio is key to any 2 stroke engine having a long life. An added bonus is that it will keep track of your mixed tanks and date them as they are mixed so you will know how old the mixed gas is!
GAS MIX is worth the $2 Dollars rather then the $50 to $100 Dollars at a shop to find out that it could have been avoided by mixing the fuel correctly!!!

tihouse02 ,

Calculates ok but amping

This is nice to keep track of equipment but every time you bring up a piece of equipment the gallon amount is some odd amount instead of 1 gal and when you change it the next time it is something else


Jason Johnson
1.4 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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