Calculator Inputs
Example Data Table
| Case | Origin Coordinates | Destination Coordinates | Limit | Route Factor | Likely Reading |
|---|---|---|---|---|---|
| Nearby office | 40.7128, -74.0060 | 40.7306, -73.9352 | 10 mi | 1.20 | Usually inside or near the stated radius. |
| Regional site | 34.0522, -118.2437 | 33.7701, -118.1937 | 25 mi | 1.30 | May need buffer review. |
| Distant location | 41.8781, -87.6298 | 42.3314, -83.0458 | 50 mi | 1.25 | Usually outside the stated radius. |
Formula Used
Haversine Distance
The main formula is:
a = sin²(Δφ / 2) + cos(φ1) × cos(φ2) × sin²(Δλ / 2)
and d = 2R × atan2(√a, √(1 − a)).
Here, φ means latitude, λ means longitude,
R means Earth radius, and d means distance.
Equirectangular Option
The short range option uses:
x = Δλ × cos((φ1 + φ2) / 2),
y = Δφ, and d = R × √(x² + y²).
This is useful for nearby addresses.
Non Compete Review Logic
The calculator compares the selected distance basis against the stated limit. It also adds the review buffer and coordinate uncertainty. If the measured distance is below the limit, the result is inside. If it is above the limit but inside the review threshold, it is borderline.
How to Use This Calculator
- Enter both address labels for your report.
- Enter verified latitude and longitude for each address.
- Select miles, kilometers, meters, or feet.
- Enter the distance limit from the agreement.
- Add a review buffer for close cases.
- Choose straight line or estimated road comparison.
- Press Calculate Distance.
- Download CSV or PDF for your records.
Article: Distance Checks for Non Compete Reviews
Practical Distance Review
A distance review can support a non compete discussion. It does not replace legal advice. It gives a clear physical measure between two places. The tool uses coordinates for the two addresses. That keeps the calculation transparent. It also avoids hidden map service rules.
Why Distance Matters
Many agreements refer to a radius, territory, or service area. A small difference can change the practical reading. Straight line distance is usually the cleanest physics value. It follows the shortest surface path on Earth. Road distance can be longer. The calculator adds a route factor for that estimate.
Good Inputs Improve Results
Use verified latitude and longitude values. Copy them from a trusted map record. Use the same datum when possible. Most modern map tools use WGS 84. Enter the covenant limit from the agreement. Add a buffer when the result is near the boundary. A buffer helps teams flag close cases for review.
Physics Behind the Method
Earth is curved, so a flat ruler is not enough. The Haversine method estimates the great circle distance. It uses two latitudes, two longitudes, and Earth radius. The equirectangular option is useful for local checks. It is quick and stable for short separations. The road estimate multiplies straight distance by your chosen factor.
Using Results Carefully
The output labels the comparison as inside, borderline, or outside. That label is only a measurement aid. Non compete rules can depend on state law, role, customers, timing, and wording. Courts may also treat distance clauses differently. Keep the address names, coordinates, units, and export files with the record.
Workflow Benefits
Human resource teams can screen moves faster. Managers can compare multiple sites consistently. Legal teams can review the flagged cases first. The CSV export supports spreadsheets. The PDF export helps save a simple case note. The example table shows typical scenarios and expected interpretation. Review the formula section before relying on any number.
Record Keeping Notes
Save the source of each coordinate. Note the date of measurement. Keep screenshots only when your policy allows them. Recheck values when an address changes. For remote work, list the office, client site, and home site separately. Clear records reduce confusion during later reviews and internal approval logs.
FAQs
1. Does this calculator geocode addresses automatically?
No. It stores address labels and calculates from coordinates. Use a trusted map tool to copy latitude and longitude before entering values.
2. Which formula should I choose?
Use Haversine for most cases. Use equirectangular for quick local checks when the addresses are close and high precision is not critical.
3. What does route factor mean?
Route factor estimates road distance from straight line distance. A value of 1.25 means the estimated route is 25 percent longer.
4. Is this legal advice?
No. This tool only measures distance. A legal review should consider the agreement wording, local rules, role, dates, and facts.
5. What is the review buffer?
The review buffer marks close cases for extra review. It helps avoid treating a near-boundary result as final without checking context.
6. Why add coordinate uncertainty?
Address coordinates may vary by source. Uncertainty gives room for small location differences, rounding, or map record inconsistencies.
7. Can I use road distance for comparison?
Yes. Select estimated road distance as the comparison basis. Confirm whether the agreement refers to radius, road travel, or another measure.
8. What should I save after calculation?
Save the inputs, coordinates, method, unit, result status, CSV, and PDF. Keep the coordinate source and measurement date too.