Calculator
Formula Used
The calculator uses the small angle relationship between target shift and range.
MRAD = Impact shift in inches ÷ Range in inches × 1000
For yards, the range in inches equals yards multiplied by 36.
MRAD = Inches × 27.7777778 ÷ Yards
For meters, inches are first converted to millimeters.
MRAD = Inches × 25.4 ÷ Meters
Scope clicks are calculated by dividing the MRAD correction by the click value.
How to Use This Calculator
- Enter the measured impact shift in inches.
- Enter the shooting range or target distance.
- Select yards, meters, or inches as the range unit.
- Choose the scope click value.
- Select the correction direction for your notes.
- Press the calculate button.
- Review MRAD, MOA, click count, and range scale values.
- Download the result as CSV or PDF when needed.
Example Data Table
| Impact Shift | Range | Formula | MRAD | Clicks at 0.1 MRAD |
|---|---|---|---|---|
| 1 inch | 100 yards | 1 × 27.7778 ÷ 100 | 0.278 | 2.78 |
| 3 inches | 100 yards | 3 × 27.7778 ÷ 100 | 0.833 | 8.33 |
| 5 inches | 300 yards | 5 × 27.7778 ÷ 300 | 0.463 | 4.63 |
| 10 inches | 600 yards | 10 × 27.7778 ÷ 600 | 0.463 | 4.63 |
| 25.4 inches | 1000 meters | 25.4 × 25.4 ÷ 1000 | 0.645 | 6.45 |
Inches to MRAD Conversion Guide
Why MRAD Matters
An inches to MRAD calculator helps convert linear target movement into angular correction. This is useful when a shot group, camera mark, survey mark, or optical reference is measured in inches. MRAD means milliradian. It describes an angle, not a fixed length. That is why distance must be included. The same one inch shift has a larger angle at close range. It has a smaller angle at long range.
Practical Range Work
In many scope systems, one MRAD equals ten clicks when the turret uses 0.1 MRAD clicks. At 100 yards, one MRAD covers about 3.6 inches. At 100 meters, one MRAD covers 100 millimeters, or about 3.94 inches. These values make the unit simple for repeatable corrections. You can measure the miss, enter range, then dial or hold the needed value.
Advanced Options
This tool accepts yards, meters, or inches. It also estimates MOA, click count, and the size of common MRAD steps at the selected range. The click count is helpful when a turret does not show exact decimals. You can round the output for quick use or keep more decimals for records. A target note field lets you label results before export.
Best Measurement Method
Measure the center of the group from the intended point. Use the same unit every time. If the group is left, select the matching direction. If the group is low, select up as the correction direction. The calculator does not judge wind, ammunition, sight height, or shooter error. It only converts the measured inch value into angular adjustment.
Export and Record Keeping
CSV export is useful for spreadsheets and range books. PDF export is useful for printed notes. Save range, ammunition, weather, and optic settings with each result. Over time, these records help confirm real corrections. They also reduce guessing when similar conditions return.
FAQs
What is an MRAD?
MRAD means milliradian. It is an angular unit. Shooters and optical users use it to describe correction across distance.
How do I convert inches to MRAD?
Divide the inch shift by the range in inches. Then multiply the answer by 1000. The result is MRAD.
What is one MRAD at 100 yards?
One MRAD is about 3.6 inches at 100 yards. A 0.1 MRAD click is about 0.36 inch at that distance.
What is one MRAD at 100 meters?
One MRAD is 100 millimeters at 100 meters. That equals about 3.94 inches.
Can I use this for scope clicks?
Yes. Enter your scope click value. The tool divides the MRAD result by that click value.
Is MRAD the same as MOA?
No. MRAD and MOA are different angular units. This calculator gives an approximate MOA value for comparison.
Should I round the result?
Use rounding that matches your scope. For a 0.1 MRAD turret, one decimal is often practical.
Does distance affect the answer?
Yes. MRAD depends on range. The same inch shift creates different angular corrections at different distances.