Vinyl Siding Cost Calculator
A vinyl siding cost calculator multiplies wall area by material and labor rates: 400 sq ft at $3 + $3 per sq ft is $2,400, and a 1,038 sq ft house is $7,785.
Vinyl siding cost calculator formula
A vinyl siding cost calculator prices the wall area at two rates. The formula is total cost = wall area in square feet × (material rate + labor rate).
Enter the length and height of the wall area in feet. If you have several walls, add their widths and use the average height, or total the area and enter it as a length of that number and a height of 1. The defaults are 40 ft by 10 ft with $3 for material and $3 for labor per square foot.
Worked examples
Example 1 is the default, 40 ft of wall at 10 ft high.
- Area: 40 × 10 = 400 sq ft
- Material: 400 × $3 = $1,200
- Labor: 400 × $3 = $1,200
- Total: $2,400
Example 2 is a two-story house, 40 ft × 30 ft, with 9 ft walls, at $3.50 material and $4 labor.
- Gross wall area: 2 × (40 + 30) × 9 = 1,260 sq ft
- Openings: 12 windows at 15 sq ft is 180, plus 2 doors at 21 sq ft is 42, so 222 sq ft
- Net area: 1,260 − 222 = 1,038 sq ft
- Material: 1,038 × $3.50 = $3,633
- Labor: 1,038 × $4 = $4,152
- Total: $7,785
To enter the second house, put 1,038 in the length box and 1 in the height box, because the calculator multiplies the two.
Comparing the result with a bid
Contractors often quote siding by the square, which is 100 sq ft. Your combined rate times 100 gives the price per square.
- Combined rate in Example 2: $3.50 + $4 = $7.50 per sq ft
- Per square: $7.50 × 100 = $750
- A bid of $9,500 on the same 1,038 sq ft works out to $9,500 ÷ 1,038 = $9.15 per sq ft
If a bid lands well above your estimate, ask what it covers. Tear-off, trim, wrap and soffit often explain the gap. If it lands well below, ask what was left out.
Measuring a whole house
Follow the walls in order.
| Step | What to do |
|---|---|
| 1 | Measure each wall’s length and height, and multiply |
| 2 | Add the gable ends: base × height ÷ 2 for each |
| 3 | Subtract windows and doors over about 10 sq ft |
| 4 | Add 10 percent if you are ordering material, not pricing labor |
Many contractors do not subtract small openings, because the trim around them takes time. Ask how your contractor measures, so the numbers line up.
What goes into the rates
| Item | Notes |
|---|---|
| Siding panels | Thickness and profile change the price |
| Trim, corners, J-channel | Often counted by the linear foot |
| Starter strip, fasteners | Small, but they add up |
| House wrap | Check the house wrap calculator |
| Soffit and fascia | Usually separate |
| Tear-off and disposal | Separate if the old siding must come off |
| Insulation board | Optional, separate |
Panels are sold by the square, which is 100 sq ft of coverage. The vinyl siding calculator turns your area into the number of squares and boxes to order.
What makes the price go up
- Homes with many corners, dormers or bump-outs take more cutting and trim.
- Tall walls need scaffolding or lifts.
- Thicker, insulated or premium profiles cost more per square foot.
- Damaged sheathing under the old siding needs repair before the new siding goes on.
- Local labor rates differ from region to region.
Get at least two written quotes and ask each what is included.
Common mistakes
- Using the floor area of the house instead of the wall area.
- Leaving out gable ends. A 30 ft wide gable with a 6 ft peak adds 90 sq ft.
- Pricing siding alone and forgetting trim and tear-off.
- Mixing the order quantity, which needs waste, with the pricing area, which does not.
- Comparing bids for different product grades.
Related calculators
To find how many squares of siding to buy, use the vinyl siding calculator. To compare materials, see the fiber cement siding cost calculator and the cedar siding cost calculator.
Frequently asked questions
How much does vinyl siding cost installed?
With the default rates of $3 material and $3 labor per square foot, 400 sq ft of wall costs $2,400. Real prices depend on the grade of siding, the shape of the house and your area, so replace the two rates with local quotes. Ask for the price per square foot with trim and accessories included.
What's included in the estimate?
Only the two rates you enter. The calculator multiplies the wall area by the material rate and by the labor rate, then adds them. Tear-off, house wrap, trim, soffit, fascia, insulation board and permits are not separate lines, so include them in your rates or add them to the total.
How do I measure wall area?
Multiply the length of each wall by its height, add the walls together, and subtract large openings such as garage doors and big windows. Add the triangular gable ends separately. For a house 40 ft × 30 ft with 9 ft walls, the gross wall area is 140 ft × 9 ft = 1,260 sq ft.
Does tear-off of old siding cost extra?
Usually, yes. Removing old siding and hauling it away takes labor and adds disposal fees, so contractors often price it as its own line. If you want it covered by this calculator, raise the labor rate or add the quoted amount to the total.
Estimates only. Verify quantities with your supplier before purchasing.