# Converting ml/gal to gal/ml

1. Sep 28, 2011

### asburypark

good afternoon,
good day,

is there some logic to assuming that ml/gal is the
exact same thing as gal/ml assuming that you are
dealing with 1 Liter in both ratios?

thank you so much

asburypark2010

2. Sep 28, 2011

### Staff: Mentor

It makes about as much sense as assuming that 50 $/hour is the same as 50 hour/$. I have nothing against working for $50 per hour, but even in Chinese sweatshops they don't work 50 hours per$1.

3. Sep 28, 2011

### Mike H

I'm not really sure what you're trying to do, but given that 1 gallon is ~ 3.75 liters (approximately - you will want to check for a more exact conversion factor), you will need to use the appropriate relationship depending on what you're trying to convert based on your dimensional analysis.

For example, let's convert 10 liters into gallons.

10 liters * (1 gallon/3.75 liters) = 2.67 gallons

On the other hand, let's convert 10 gallons into liters.

10 gallons * (3.75 liters/1 gallon) = 37.5 liters

The relationship of 1 gallon ~ 3.75 liters holds in both cases, but in one case, gal/L is used, while L/gal is used in the other.

4. Sep 29, 2011

### sjb-2812

Last edited by a moderator: May 3, 2018