Land Area Calculator — Triangle Land Measurement
Calculate the area of triangular land plots using three side measurements (Heron's formula). Get results in square feet, square meters, acres, hectares, and cents. Essential for land surveying, real estate, and property measurement. See also our Area Converter and Triangle Area Calculator.
Enter the three sides of the triangular land plot in feet.
How to Calculate Triangle Land Area
- Measure all three sides of the triangular land plot in feet.
- Enter Side A, Side B, and Side C values.
- Click Calculate to get the area in multiple units.
- The calculator uses Heron's formula — no need to know the height.
Land Area Formula (Heron's Formula)
Heron's Formula for Triangle Area:
s = (a + b + c) / 2 (semi-perimeter)
Area = √[s × (s-a) × (s-b) × (s-c)]
Unit Conversions:
1 acre = 43,560 sq ft = 4,047 sq m
1 hectare = 2.471 acres = 107,639 sq ft
1 cent = 1/100 acre = 435.6 sq ft
1 sq yard = 9 sq ft
1 sq meter = 10.764 sq ft
Triangle Inequality Rule:
Sum of any two sides must be greater than the third side
a + b > c, a + c > b, b + c > aFrequently Asked Questions
What is Heron's formula?
Heron's formula calculates triangle area using only the three side lengths, without needing the height. It uses the semi-perimeter: Area = √[s(s-a)(s-b)(s-c)] where s = (a+b+c)/2.
How many square feet in one acre?
One acre equals 43,560 square feet. This is roughly the size of a football field (without end zones). One cent equals 435.6 square feet (1/100 of an acre).
Can I use this for irregular land?
For irregular land, divide it into multiple triangles, calculate each triangle's area separately, then add them together. This method works for any polygon shape.
What if my land is not a triangle?
For rectangular land, use length × width. For irregular shapes, divide into triangles. For circular plots, use πr². Our Area Converter can help convert between units after calculation.
What is a cent in land measurement?
A cent is 1/100 of an acre (435.6 sq ft or 40.47 sq m). It is commonly used in South India for measuring small land plots. 100 cents = 1 acre.
Objective of Measurement:
Measurement is the most important aspect of our life. We use measurement in science, engineering, business trading, personal life, education, and more other fields. As technology is growing day by day so we need a highly accurate and easy convenient global measuring system in each and every field. It is essential to use standard measurement in every field that everyone to be sure that they not get cheated.
History of Measurement:
In history for measurement people used the human body as a tool. For measuring length used forearm, hand, foot & finger as a unit. The foot, finger is a subdivided shorter unit of a length. This type of measurement is not accurate cause different in size of the arm & finger for different people & some of the countries still using it. In history, there were lots of measuring systems developed but mostly used imperial, the metric system of measurement. We use these systems for measure distances, volume, weight, speed, area etc. Due to this a major problem everyone is facing while doing trading between the countries. A huge improvement in civilization, It necessary to improve measuring standards. Nowadays International Standard (SI) units are used as a global measurement system.