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Use our Rectangle Fence Perimeter Calculator to find fence length fast. Enter your yard size, choose units, and subtract a gate opening with ease.
| Quantity | Formula |
|---|---|
| Total Perimeter | P = 2 × (Length + Width) |
| Net Fence Length (optional) | Net Fence Length = Perimeter - Total Gate Opening Width |
A fence keeps your yard safe and neat. But how much fence do you need? Our Rectangle Fence Perimeter Calculator helps you find out in seconds. Enter the length and width of your yard. Then get the total perimeter with ease.
You can also subtract a gate opening to find the net fence length. This tool works with common units, such as feet, meters, inches, and yards. It helps you plan your fence with less guesswork.
The formula for a rectangle's perimeter is:
Perimeter = 2 × (Length + Width)
Here, length means the longer side, and width means the shorter side. Both sides must use the same unit before you add them.
If your yard is 20 feet long and 12 feet wide, add both sides first. Then multiply the sum by two. The total perimeter is 64 feet.
If you plan to add a gate, use this formula:
Net Fence Length = Total Perimeter − Gate Width
This gives you the fence length after you leave space for the gate.
Follow these five steps to get your result.
Enter the length. Type the length of your yard in the chosen unit.
Enter the width. Add the width of your yard.
Choose your units. Pick the right unit for each value and your final result.
Add a gate opening if needed. Turn on the gate option and enter its width.
Calculate the result. View the total perimeter and net fence length, if you use a gate.
Check your measurements before you start. A small error can lead to extra costs or wasted fence parts.
Suppose your yard is 20 feet long and 12 feet wide.
Step 1: Write the formula.
Perimeter = 2 × (Length + Width)
Step 2: Add the values.
Perimeter = 2 × (20 + 12)
Step 3: Solve the sum.
Perimeter = 2 × 32
Step 4: Find the total.
Perimeter = 64 feet
You need 64 feet of fence to cover the full edge of the yard.
Now, say you want a 4-foot gate. Subtract its width from the total.
Net Fence Length = 64 − 4 = 60 feet
So, you need 60 feet of fence, plus the gate itself.
The Rectangle Fence Perimeter Calculator makes fence planning simple. It helps you find the total boundary length without hard math. You can also account for a gate opening to estimate the net fence length.
Use your exact yard sizes for the best result. For real projects, check local rules and allow for posts, corners, and any extra material you may need. This helps you avoid costly mistakes.
Multiply the sum of the length and width by two. The formula is Perimeter = 2 × (Length + Width).
Add the length and width of your yard. Then multiply the sum by two. This gives you the total perimeter.
Yes. You can use supported units such as feet, meters, inches, yards, centimeters, and millimeters. The calculator converts them for a fair result.
Yes, if you want the net fence length. Subtract the total gate opening width from the full perimeter.
The total perimeter measures the full boundary. The net fence length leaves out the gate opening. The gate itself is a separate item.
You may need extra material for cuts, joins, and site changes. The perimeter gives you the base length, not a full material estimate.