Free Online Area Calculator for Metes and Bounds

Enter deed calls and field distances with better confidence. Check acreage, closure, and perimeter instantly. Create useful records for maps, deeds, and planning reviews.

Calculator

Quadrant example: N 45 30 0 E 125.5. Azimuth example: 45.5 125.5. Keep one course per line.

Example Data Table

LineBearingDistanceExpected Result
1N 0 0 0 E300 feetNorth side
2S 90 0 0 E200 feetEast side
3S 0 0 0 W300 feetSouth side
4N 90 0 0 W200 feet60,000 square feet

Formula Used

Each course becomes a latitude and departure. For an azimuth measured clockwise from north:

Departure = Distance × sin(Azimuth)

Latitude = Distance × cos(Azimuth)

The coordinate area uses the shoelace formula:

Area = |Σ(Ei × Ni+1 − Ei+1 × Ni)| ÷ 2

Closure error = √(Closure departure² + Closure latitude²)

Bowditch correction per course = Total error × Course length ÷ Perimeter

How to Use This Calculator

  1. Choose quadrant bearings or decimal azimuths.
  2. Select the same distance unit used in the deed.
  3. Enter each boundary call on a separate line.
  4. Add any scale factor or bearing correction if needed.
  5. Choose no adjustment or Bowditch adjustment.
  6. Press Calculate Area to review area and closure.
  7. Use CSV or PDF buttons to save your result.

Why Area Matters

Metes and bounds descriptions define land with courses. Each course has a bearing and a distance. The calculator converts every course into latitude and departure values. Those values create coordinates. The coordinates then form a polygon. The polygon area gives the reported parcel size.

This method is useful for deed checks. It is also helpful for survey review. You can test old calls, scaled drawings, or field notes before preparing a formal plan. It does not replace a licensed survey. It gives a clear mathematical check.

What the Calculator Checks

A strong traverse should close near the start point. The closure error shows the gap between the final computed point and the first point. A smaller gap means the calls fit better. The relative precision compares that gap with the total traverse length.

The tool also supports Bowditch adjustment. This method spreads the closing error across all lines by length. Longer lines receive larger corrections. It is common for balanced compass work. Use it only when the error is small and random.

Better Inputs Give Better Results

Enter bearings carefully. Use degrees, minutes, and seconds when known. Keep each course on one line. Match the chosen unit to the deed. Apply a scale factor only when your distances came from a scaled map.

Check the direction letters. North and south set the latitude sign. East and west set the departure sign. A single wrong letter can flip a line and change the whole parcel.

Interpreting the Output

The main area appears in square units, acres, and hectares. Perimeter is the total entered boundary length. The signed area helps reveal direction. A positive or negative sign may show whether the calls run clockwise or counterclockwise.

Use the coordinate table to find unusual jumps. Review any course with a large bearing change. Export the CSV for spreadsheets. Save the PDF for a quick project record.

Practical Notes

Old deeds may contain curved boundaries, monuments, or missing calls. Convert curves to chord segments before entry. When monuments control the boundary, legal interpretation may differ from pure math. Always compare the result with maps, plats, and survey records. Use this page as a planning aid and a quality check today online.

FAQs

What is a metes and bounds area calculator?

It converts bearing and distance calls into coordinates. Then it applies the shoelace formula to estimate parcel area, perimeter, acreage, closure error, and related coordinate checks.

Can I enter deed bearings directly?

Yes. Use one course per line. A typical entry is N 45 30 0 E 125.5. The last number is treated as the distance.

Does this calculator support azimuths?

Yes. Choose decimal azimuth mode. Enter each line as azimuth and distance, such as 45.5 125.5. Azimuths are measured clockwise from north.

What does closure error mean?

Closure error is the distance between the final computed point and the start point. A small value shows that the calls return close to the beginning.

When should I use Bowditch adjustment?

Use Bowditch adjustment when the traverse error is small and likely random. It distributes the error by course length. Do not use it to hide major input mistakes.

Can this replace a surveyor?

No. It is a mathematical aid for checking calls. Legal boundaries may depend on monuments, records, local rules, and licensed survey work.

How are acres calculated?

The calculator converts the computed area to square feet first. Then it divides by 43,560 to report acres.

Why is my area negative before using absolute value?

A negative signed area usually means the points run in the opposite direction. The calculator reports the absolute area while also showing direction information.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.