3 Replies Latest reply on Dec 8, 2015 9:02 AM by try67

# how can you calculate the difference between 2 compass headings

I need to calculate between to compass headings and provide the shortest answer with a + or a - in front of the result.

350 - 356 would result in + 6

350 - 345 would result in  - 5

355 - 002 would result in + 7

the end result will be applied to an iPad using PDF Expert as the reader

any help would be appreciated...thank you

• ###### 1. Re: how can you calculate the difference between 2 compass headings

You need to better explain the logic behind this calculation... How do you calculate the difference between these two values (I'm guessing it's something to do with 360, but it's not really clear)?

• ###### 2. Re: how can you calculate the difference between 2 compass headings

That is correct, a compass has 360 degrees to make a full circle then begins again at a compass reading of 001 at that point....in aviation circles, we need to account for the difference between two independent sources of navigation which use the compass readings for reference.   That difference is then logged for our records.

Hope that clarifies the request...

Thank you!

• ###### 3. Re: how can you calculate the difference between 2 compass headings

Not really... Please provide the exact logic or formula behind the calculation you want to achieve.