Calculator Inputs
Formula Used
- Gross wall area = wall length × wall height
- Opening area = (doors × door width × door height) + (windows × window width × window height)
- Net wall area = gross wall area − opening area
- Board coverage area = net wall area × boarded sides × layers per side
- Board sheets = ceil[(board coverage area × (1 + board waste %)) ÷ single sheet area]
- Track length = (2 × wall length) × (1 + track waste %)
- Base stud count = ceil(wall length ÷ stud spacing) + 1
- Stud linear material = base studs + opening reinforcement + bridging rows
- Stud pieces = ceil(stud linear material ÷ stud stock length)
- Insulation area = net wall area when insulation is selected
- Screws = board sheets × screws per sheet
- Joint compound = board coverage area × compound kg per m²
- Paint area = net wall area × boarded sides × paint coats
- Total cost = studs + tracks + boards + insulation + screws + compound + paint
How to Use This Calculator
- Enter the wall length and height in meters.
- Choose the stud spacing, stock lengths, and bridging rows.
- Enter board size, boarded sides, layers, and waste percentage.
- Add the number and size of doors and windows.
- Fill in optional rates for studs, tracks, boards, screws, compound, insulation, and paint.
- Click Calculate Partition Wall to see totals above the form.
- Review the detailed table and chart, then export results to CSV or PDF.
Example Data Table
| Wall Length (m) | Wall Height (m) | Doors | Windows | Stud Spacing (mm) | Net Area (m²) | Boards | Track Length (m) | Stud Linear (m) |
|---|---|---|---|---|---|---|---|---|
| 6.00 | 3.00 | 1 door at 0.90 × 2.10 | 1 opening at 1.20 × 1.00 | 600 | 14.91 | 12 sheets | 12.60 | 60.50 |
| 8.50 | 3.20 | 2 doors at 0.90 × 2.10 | 0 | 400 | 23.42 | 19 sheets | 17.85 | 89.20 |
FAQs
1) What does this partition wall calculator estimate?
It estimates wall area, net board area, stud linear length, track length, board count, insulation area, screw demand, joint compound, paint area, and material cost. It is suitable for quick budgeting and ordering checks before detailed shop drawings are produced.
2) Does it subtract doors and windows?
Yes. Door and window openings are deducted from board, insulation, and paint coverage. The tool also adds framing reinforcement around openings so material estimates stay more realistic for interior wall construction.
3) Can I use metric sheet sizes?
Yes. Enter board width and height in millimeters. The calculator converts sheet dimensions to square meters automatically, then applies waste and layer settings to estimate the final number of boards required.
4) How are studs calculated?
Base studs are set from wall length and selected spacing. Extra framing for doors, windows, and bridging rows is added as linear material, then converted into approximate stud pieces using your stock length.
5) Is the cost total exact?
No. The total is an estimating figure, not a contract quantity. Site cuts, acoustic requirements, fire ratings, bracing details, corner conditions, and manufacturer systems can change final material usage and pricing.
6) Why include waste percentages?
Waste covers offcuts, damage, adjustments, and installation losses. Adding waste early reduces under-ordering risk, especially on walls with many openings, staggered joints, or nonstandard board layouts.
7) Can I use it for double-layer boarding?
Yes. Increase layers per side or change the number of boarded sides. The calculator scales board area, screws, compound, and finish coverage accordingly.
8) What should I verify before ordering?
Check stud gauge or timber size, wall type, board specification, opening details, door frame allowances, service penetrations, and project drawings. Confirm supplier pack sizes and stock lengths before placing the final order.