Area and acreage calculator, built for legal description math.
Convert square feet to acres, solve triangle and section-fraction acreage, calculate unit price, and drill the Florida exam traps behind legal-description math.
Memorize two anchors: 43,560 square feet per acre and 640 acres per section. Rectangle area is length times width. Triangle area is base times height divided by 2. Section-fraction acreage is every fraction multiplied by 640. Unit-price questions divide price by the unit requested.
Reviewed June 19, 2026 against DBPR's current sales associate Candidate Information Booklet, effective January 2025. The DBPR outline puts Legal Descriptions at 5 percent and Real Estate Related Computations and Closing of Transactions at 6 percent, so acreage math belongs in both your legal-description review and your calculation practice.
Use feet times feet to get square feet. Keep the unit attached.
Divide square feet by 43,560 to convert to acres.
Multiply base by height, then divide by 2. Keep both measurements in feet.
A standard government survey section is one square mile, or 640 acres.
A quarter of a quarter is 1/4 x 1/4 x 640, which equals 40 acres.
Match the final unit: price per square foot and price per acre are different.
Why this calculator belongs in a Florida exam study plan.
The page is not a survey tool. It is built around the areas of the Florida sales associate outline where area, acreage, legal descriptions, and unit conversions show up.
DBPR lists legal descriptions, government survey, and Math-Legal Description in the sales associate outline.
Real estate related computations and closing of transactions are a separate DBPR content area.
The Florida sales associate exam is closed book, multiple choice, and timed at three and a half hours.
Use this page while studying. At the test center, follow DBPR's rules for permitted hand-held calculators.
Three steps before you calculate.
The calculator works best when you name the problem type first, keep the unit attached, and answer in the unit the question asks for.
Pick rectangle, triangle, square feet to acres, acres to square feet, section fraction, or unit price.
Use feet for length and width, square feet or acres for area, and every section fraction shown in the question.
Check whether the exam asks for square feet, acres, price per square foot, or price per acre before choosing.
Convert area, acreage, section fractions, and unit price.
Area questions reward memorizing two anchors: 43,560 and 640.
One acre is 43,560 square feet. A section is 640 acres. Those two numbers solve most area questions.
For section descriptions, multiply every fraction by 640. A quarter of a quarter is 1/16 of a section.
Price per square foot and price per acre are different answers. Match the unit in the final ask.
This web calculator is for practice. At the test center, follow DBPR rules for permitted hand-held calculators.
A legal description like the NE 1/4 of the SW 1/4 means multiply 1/4 by 1/4 by 640. The order helps locate the parcel, but the acreage math is still fraction times fraction times 640.
Email the cheat sheet and this calculation.
Get the formula, trap reminders, and your current breakdown in one printable study note.
Area math is unit control.
The arithmetic is simple once you know whether the exam wants square feet, acres, a section fraction, or a price unit.
Is the question asking for square feet or acres?
Rectangle area gives square feet. Acreage requires one more step: divide square feet by 43,560.
Is it a section-fraction problem?
Start with 640 acres, then multiply by every fraction in the legal description.
Is the parcel shaped like a triangle?
Use base times height divided by 2, then convert to acres only if the final ask requires acres.
Does the question ask for price per square foot or price per acre?
Use the same total price, but divide by the unit requested. Do not mix square feet and acres.
Is the legal description asking location or acreage?
For acreage, multiply fractions. For location, read the description from the end inward because each phrase narrows the parcel.
Five area questions to answer without the calculator.
Try these first from memory. Then use the calculator to check the arithmetic and the unit.
A rectangular parcel is 264 feet by 330 feet. How many acres is it?
264 x 330 = 87,120 square feet. 87,120 divided by 43,560 equals 2 acres.
How many acres are in the NE 1/4 of the SW 1/4 of a section?
Multiply every fraction by the section: 1/4 x 1/4 x 640 = 40 acres.
A triangular parcel has a 220-foot base and a 198-foot height. How many acres is it?
220 x 198 divided by 2 = 21,780 square feet. 21,780 divided by 43,560 equals 0.50 acres.
A 12-acre parcel sells for $780,000. What is the price per acre?
$780,000 divided by 12 acres equals $65,000 per acre.
A property sells for $350,000 and contains 50,000 square feet. What is the price per square foot?
$350,000 divided by 50,000 square feet equals $7.00 per square foot.
Six area patterns to make automatic.
These examples cover rectangle area, triangle area, acre conversions, section fractions, and unit-price math.
300 feet by 200 feet
Feet times feet gives square feet, not acres.
60,000 square feet
Use 43,560, not 40,000 or 50,000.
2.5 acres
Multiply when the final ask is square feet.
180-foot base and 120-foot height
Do not forget the divide-by-2 step.
NE 1/4 of the SW 1/4 of a section
A quarter of a quarter is 1/16 of the section.
$450,000 price and 60,000 square feet
Do not divide by acres if the ask is per square foot.
The unit mistakes behind most acreage misses.
The exam rarely makes area math complex. It makes the unit easy to overlook.
Forgetting to convert square feet to acres
A rectangle gives area in square feet. If the answer choices are acres, divide by 43,560 before choosing.
Forgetting to divide triangular parcels by 2
A triangle is not base times height. It is base times height divided by 2.
Forgetting that a section has 640 acres
Most government survey acreage questions become easy once 640 is automatic.
Adding section fractions instead of multiplying
The SW 1/4 of the NE 1/4 is not 1/2 of a section. It is 1/16 of a section, or 40 acres.
Reading a legal description for the wrong task
For acreage, multiply the fractions. For location, the last phrase names the larger area and earlier phrases narrow it.
Mixing price per acre and price per square foot
Both are valid numbers, but only one answers the question. Match the unit in the final sentence.
What to study next if legal descriptions are shaky.
Acreage math belongs with legal descriptions, property tax, and the broader exam formula set.
Frequently asked questions.
Quick answers for the area, acreage, section-fraction, and unit-price questions Florida candidates search for most.
How many square feet are in one acre?+
One acre contains 43,560 square feet. On the exam, divide square feet by 43,560 to convert to acres.
How many acres are in one section?+
A standard government survey section contains 640 acres. It is one square mile.
How do you calculate acres from a section fraction?+
Multiply every fraction together, then multiply by 640. For example, the NE 1/4 of the SW 1/4 is 1/4 x 1/4 x 640, which equals 40 acres.
How do you calculate price per square foot?+
Divide the price by the number of square feet. If a property costs $450,000 and has 60,000 square feet, the price is $7.50 per square foot.
Is this a survey or legal description tool?+
No. It is built for Florida real estate exam preparation. Real property descriptions, surveys, title work, and acreage disputes require professional review.
What Florida exam topics does area and acreage math support?+
It supports legal descriptions, government survey math, real estate related computations, closing math setup, property tax context, and appraisal or unit-price questions that require square feet, acres, or price per unit.
Can I use this web calculator during the Florida real estate exam?+
No. Use this web calculator for practice before test day. DBPR allows only permitted calculators at test centers, such as silent, hand-held, battery-operated, nonprinting calculators without an alphabetic keypad.
Why do Florida legal description questions use township, range, and section?+
Florida uses township, range, and section references in legal descriptions. For acreage questions, start with a standard 640-acre section and multiply the fractions that describe the smaller parcel.
How many acres are in the NE 1/4 of the SW 1/4 of Section 14?
Start with 640 acres. Multiply 1/4 x 1/4 x 640. The answer is 40 acres.