Type your values into the 4 input boxes and hit the "Calculate" button.

Please convert fraction input values to decimal. For example: change 1/4 inch to 0.25 inch. I've included a conversion table below for your convenience.

The scope says 1 click will move the bullet inch at yards.

I want the bullet to move inch(s) at yards.


1 MOA = 1.047 inch at 100 yards. For most practical purposes you can substitute inches for MOA if your scope specifies MOA at 100 yards. For example: 1/4 MOA at 100 yards = 1/4 inch at 100 yards.

The calculator uses the following formula:
Clicks = (amount of desired bullet impact location movement / amount of scope movement per click) x (adjustment distance specified on the scope / distance to the target)

The calculator is provided "as is" without warranty of any kind, either expressed or implied.

Fraction To Decimal Conversion Table

Fraction Decimal
1/2 0.5
1/3 0.333
1/4 0.25
1/5 0.2
1/8 0.125
1/10 0.1

Additional Resources

Not sure how much bullet drop to expect? Not sure what adjustments are required to adjust zero at different distances?

First, I recommend visiting a range and getting a "real world" answer. Nothing beats empirical data!

If getting out to the range isn't practical or possible, I recommend a free ballistic calculator. For example:

Hornady Ballistic Calculator

Federal Ballistic Calculator

Winchester Ballistics Calculator

The ballistic calculators should be able to answer most of your questions.

If you still have a question, please feel free to contact me. I'm not an expert, but I'll be happy to try and help.


You may contact me at


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