(A better question is * why wouldn’t *we use the metric system?…)

One reason to use the metric system is that it is used by almost the entire planet. Indeed, the only countries that *don’t *use metric are USA, Liberia and Myanmar…

*(Update: both Liberia and Myanmar have now officially stated that they are in the process of transitioning from the imperial system to the metric system… leaving only one country that hasn’t…)*

But more than just making sense so as to better participate with the vast majority of humanity, there is a reason why almost almost everyone on the planet uses the metric system: * IT’S BETTER*.

How is it better?

- Easier math / conversions
- Simpler, easier to remember (conversions, formulas, etc.)
- More uniform and logical naming structure
- Easier to teach
- It defaults to decimals rather than fractions
- It’s the language of Science (even in the USA)

And all of that means that users of the metric system are **far less likely to make errors** in their conversions, calculations and measurements.

As an example, try adding 3 1/2 pounds to 32 ounces… *go ahead, I’ll wait while you do the conversions… *Or tell me off the top of your head, which if further, 1/2 mile or 1,000 yards?

On the other hand, think for a moment how ** easy **it is to do conversions and math

**in almost any other country…**

**Think about it…:** 12 inches per foot

3 feet per yard

1,760 yards per mile

8 ounces per cup

16 cups per gallon

*There is absolutely NO LOGIC to this!*So why don’t we (in the USA) use the metric system?… *Don’t get me started.*

But in cartography class – **we will **use the metric system. For those of us who grew up using the Imperial system, think of this as a small step toward joining the rest of the planet.