Free Tools/Plywood Calculator

Plywood Sheet Calculator — Cabinetry & wardrobes

Convert your total surface area into the number of plywood sheets needed. Supports 8'×4', 7'×4' and custom sheet sizes. Auto-included wastage.

Quick answer

One 8'×4' plywood sheet = 32 sqft. Divide your total panel area by 32, multiply by 1.10 (10% wastage), round up. A 6 ft 3-door wardrobe needs ~7 sheets. For optimized cuts with visual layout, use our Cut List Optimizer.

Your job

Add up all panels — sides + back + shelves + doors

Sheets needed

6sheets
8'×4' plywood sheets
Surface area160 sqft
With 10% wastage176 sqft
Per sheet32 sqft
Sheets6 sheets
Estimated cost₹13,200

How plywood sheets are calculated

Calculate the total surface area of every panel in your job — sides, top, bottom, back, shelves, doors. Add a wastage percentage, then divide by the area of one sheet to get the count, rounded up.

Formula: Sheets = ⌈(Total area × (1 + waste%)) ÷ Sheet area⌉

How to use this calculator

  1. Add up every panel in your design — for a wardrobe that's 2 sides, top, bottom, back, plus all shelves and doors. Use the panel's length × height in feet.
  2. Pick your sheet size — the Indian standard is 8'×4' but specific brands offer smaller sizes that may waste less for narrow shelving.
  3. Pick a wastage — 10% covers normal off-cuts on straight cabinetry. Bump it up for complex cuts or grain-matched veneer.
  4. Optionally enter a cost per sheet to get an instant estimate. Standard 18mm BWR plywood in India ranges ₹1,800–₹2,800 per 8'×4' sheet.

Common cabinetry estimates

FurnitureApprox. surface area8×4 sheets needed
3-door wardrobe (6×7 ft)~180 sqft6–7 sheets
4-door wardrobe (8×7 ft)~240 sqft8–9 sheets
Modular kitchen cabinets (10 ft run)~250 sqft9–10 sheets
TV unit (6 ft wall-mounted)~80 sqft3 sheets
Study table with overhead unit~60 sqft2–3 sheets

Plywood thickness reference

  • 18mm — main carcass, doors, shelves bearing weight
  • 12mm — drawer bottoms, partition shelves, lighter panels
  • 6mm — back panels, drawer fronts (decorative)
  • 4mm / 3mm — back of wardrobes (called "lainer" or hardboard back)

Frequently asked questions

How many plywood sheets for a 6 ft wardrobe?
A standard 6×7 ft wardrobe with 2 ft depth needs approximately 5–6 sheets of 8×4 plywood for the carcass, plus 1–2 sheets for shelves and back panel — total 7–8 sheets including 10% wastage.
What is standard plywood sheet size in India?
The most common plywood sheet size in India is 8 ft × 4 ft (32 sqft) per sheet. Other standard sizes include 7 ft × 4 ft, 8 ft × 3 ft and 6 ft × 3 ft, depending on the brand and grade.
How much wastage should I add for plywood?
Add 10% wastage for standard cabinetry, 15% for complex curved or angled cuts, and 20% if working with patterned veneer that needs grain matching.
What grade of plywood should I use?
Use BWP (Boiling Water Proof) for kitchens and bathrooms, BWR (Boiling Water Resistant) for general interior cabinetry and wardrobes, and MR (Moisture Resistant) for low-cost dry interior work.

Want all 11 calculators in your pocket?

Download InteriorOS — calculators bundled with project management, finance and CRM.

Get the app