Halfway Between 12 and 521

When you ask "What number is halfway between 12 and 521?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=12 and Y=521.

Halfway Between Line

To find the number halfway between 12 and 521, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 12 and 521 into our formula, we get:

(12 + 521)/2 = 266.5

Thus, the number halfway between 12 and 521 is 266.5.

To check that our answer is correct, we subtract 12 from 266.5 and subtract 266.5 from 521 and compare the two numbers:

266.5 - 12 = 254.5
521 - 266.5 = 254.5

As you can see, the halfway number is 254.5 higher than 12 and 254.5 lower than 521. Therefore, our halfway between answer of 266.5 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 12 and 522
Here is our next Halfway Between calculation.