4.7 MOA at 100yds is approx. 4.7 inches, or to be more exact, multiply 4.7 by 1.0471996 to = 4.92 inches at 100 yards. 4.7 MOA at 400 yds is approx. 19.69 inches.

1 MOA converted to inches at 100yds is 1.0471996 inches, or just 1 inch to make it easy, but 1 MOA at 400yds would be 4 x 1.0471996 inches. That's how I got the ~19.69 inches above.

Take the yardage to target, divide it by 100 and that is what 1 MOA at that yardage will be in inches. That's close enough for estimated MOA typically.

1000yds-1MOA is 10" To be more exact-- multiply 10 by 1.0471996.

600yds-1MOA is 6"

200yds-1MOA is 2"

559 yds-1MOA is 5.59"

...etc.

Sorry if that's not helpful. Jon