Stud Count Calculator
Studs, plates and nails for a framed wall of any length.
Enter your values
Enter the wall length in ft.
Choose one of: 16 in o.c., 24 in o.c..
Enter the doors + windows you are working with.
Enter the corners + intersections you are working with.
Enter the cost per stud in $.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Studs needed
- 31
- Base studs at spacing
- 19
- Extra for openings and corners
- 12
- Plate stock (double top + bottom)
- 5 x 16 ft
- Material cost
- $139.50
Working
- 124 ft x 12 / 16 + 1 = 19, plus 12 extras
Quick answer
Studs = wall length in inches divided by spacing, plus one, plus extras for corners, T-intersections and each opening.
studs = length x 12 / spacing + 1 + extras
At a glance
| What it does | Studs, plates and nails for a framed wall of any length. |
|---|---|
| Category | Home & DIY |
| Inputs needed | Wall length, Stud spacing, Doors + windows, Corners + intersections, Cost per stud |
| Main output | Studs needed |
| Formula | studs = length x 12 / spacing + 1 + extras |
| Cost | Free — no sign-up, no download |
How to use the Stud Count Calculator
- 1Measure the wall length and choose the spacing your code allows.
- 2Count each door and window - allow king studs, jacks and cripples.
- 3Add two extra studs per corner or wall intersection for drywall backing.
Inputs explained
- Wall length(ft)
- Enter the wall length in ft.
- Stud spacing
- Choose one of: 16 in o.c., 24 in o.c..
- Doors + windows
- Enter the doors + windows you are working with.
- Corners + intersections
- Enter the corners + intersections you are working with.
- Cost per stud($)
- Enter the cost per stud in $.
Worked example
Using the values the calculator loads with:
Inputs
- Wall length24 ft
- Stud spacing16 in o.c.
- Doors + windows2
- Corners + intersections2
- Cost per stud4.50 $
Results
- Studs needed31
- Base studs at spacing19
- Extra for openings and corners12
- Plate stock (double top + bottom)5 x 16 ft
- Material cost$139.50
- 24 ft x 12 / 16 + 1 = 19, plus 12 extras
Frequently asked questions
Is 24 inch spacing acceptable?
Yes for many non-load-bearing and advanced-framing walls, and it saves lumber, but check your local code and use 5/8 in drywall to avoid waviness.
How many plates do I need?
One bottom plate and two top plates along the full wall length, so about three times the wall run in plate stock.
What do I need to enter into the Stud Count Calculator?
Just 5 values: wall length, stud spacing, doors + windows, corners + intersections, cost per stud. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Stud Count Calculator work out the answer?
Studs = wall length in inches divided by spacing, plus one, plus extras for corners, T-intersections and each opening. It applies the formula studs = length x 12 / spacing + 1 + extras and shows the working so you can check each step by hand.
Is the Stud Count Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.