Halfway Between 0 and 18

When you ask "What number is halfway between 0 and 18?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=0 and Y=18.

Halfway Between Line

To find the number halfway between 0 and 18, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 0 and 18 into our formula, we get:

(0 + 18)/2 = 9

Thus, the number halfway between 0 and 18 is 9.

To check that our answer is correct, we subtract 0 from 9 and subtract 9 from 18 and compare the two numbers:

9 - 0 = 9
18 - 9 = 9

As you can see, the halfway number is 9 higher than 0 and 9 lower than 18. Therefore, our halfway between answer of 9 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 0 and 19
Here is our next Halfway Between calculation.