MOA Input Form
Formula Used
One MOA size: Distance in yards × 1.0471975512 ÷ 100.
MOA from size: Physical size in inches ÷ one MOA size at that distance.
Physical size from MOA: MOA × one MOA size at that distance.
Clicks needed: MOA correction ÷ scope click value.
Range estimate: Known size in inches × 100 ÷ 1.0471975512 ÷ observed MOA.
How To Use This Calculator
Enter the distance first. Choose yards, meters, or feet. Add the target size or group size. Select the matching size unit. Enter the MOA value you want to test. Add the click value for your optic. Most scopes use 0.25 MOA per click.
For correction, enter elevation and windage misses. Use positive values for high or right impacts. Use negative values for low or left impacts. Press calculate. The result appears above the form and below the header. Use CSV or PDF buttons to save the same inputs.
Example Data Table
| Distance | 1 MOA Size | 0.25 MOA Click Size | Example Use |
|---|---|---|---|
| 100 yards | 1.047 inches | 0.262 inches | Basic zero check |
| 200 yards | 2.094 inches | 0.524 inches | Short range correction |
| 300 yards | 3.142 inches | 0.785 inches | Group size review |
| 500 yards | 5.236 inches | 1.309 inches | Field adjustment |
| 1000 yards | 10.472 inches | 2.618 inches | Long range estimate |
Minute Of Angle Guide
What MOA Means
Minute of angle is an angular measurement. Shooters use it to connect target size with distance. One MOA is one sixtieth of one degree. At 100 yards, it covers about 1.047 inches. Many people round it to one inch. The exact value gives better notes.
Why This Tool Helps
This calculator turns angular values into practical field numbers. It can estimate group size, scope clicks, target span, and range. It also handles yards, meters, feet, inches, centimeters, and millimeters. That helps when targets, optics, or range records use different units.
Scope Adjustment Planning
A scope click value tells how much the reticle moves per click. Common values are 0.25 MOA and 0.5 MOA. If your shot lands two MOA high, a 0.25 MOA scope needs eight clicks down. The calculator also shows windage corrections.
Reading The Result
The first result shows the true size of one MOA at your distance. The second result converts your known size into MOA. The next values show physical size and click count for your desired MOA. Correction rows suggest dial direction.
Practical Notes
Measure group size from center to center. Use the same unit for each range note when possible. Confirm your optic tracks correctly before relying on large adjustments. Real impacts can change because of wind, ammunition, rifle setup, temperature, and shooter position.
Best Use Cases
Use this tool during zeroing, load testing, target review, and range logging. It is also useful when comparing old notes with new targets. The export buttons help save clear records. A clean log makes later corrections faster and easier.
Frequently Asked Questions
What is one minute of angle?
One minute of angle is one sixtieth of one degree. At 100 yards, it equals about 1.047 inches. It grows with distance because it is an angular measurement.
Is one MOA always one inch?
No. One MOA is about 1.047 inches at 100 yards. Many shooters round it to one inch for quick work, but exact calculations use 1.047 inches.
How do I calculate scope clicks?
Divide the needed MOA correction by your scope click value. For example, two MOA with a 0.25 MOA click value needs eight clicks.
What does a positive elevation miss mean?
In this calculator, a positive elevation miss means the impact is high. The suggested correction will be down. A negative value means the impact is low.
What does a positive windage miss mean?
A positive windage miss means the impact is right. The suggested correction will be left. A negative value means the impact is left.
Can I use meters instead of yards?
Yes. Choose meters in the distance unit field. The calculator converts the value to yards internally, then applies the MOA formulas.
Why are clicks sometimes rounded?
Most scopes move in fixed click steps. Rounding gives a practical dial value. Turn rounding off when you want the exact mathematical click count.
Can this estimate range from target size?
Yes. Enter the known target size and observed MOA. The range estimate shows the approximate distance in yards, using the standard MOA relationship.