Paint Calculator India — Litres of Paint for Any Room, Wall & Ceiling
Calculate exact litres of paint, primer, and putty needed for rooms, walls, and ceilings. Get material cost estimate instantly.
How many litres of paint for a 12×10 ft room in India?
For a 12×10 ft room, 10 ft ceiling, 1 door + 2 windows: Net wall area = 387 sq ft + 120 sq ft ceiling = 507 sq ft total. For 2 coats premium emulsion (150 sq ft/L): 7 litres paint. Plus 4 litres primer + 13 kg wall putty for new walls. Buy one 4L + one 4L tin (or one 10L) of paint.
Formula: Paint (L) = [2×(L+W)×H − doors×21 − windows×16] × coats ÷ coverage | Putty = Area × 2.5 kg per 100 sq ft
🎨 Paint Quantity Calculator
Enter room dimensions to calculate paint requirements
Paint Requirements
Paint Coverage Guide — India Brands Reference (2026)
Coverage per litre per coat. Multiply by number of coats. Rough or porous surfaces consume 15–20% more.
Paint Type / Brand
Coverage (sq ft/L)
Primer (sq ft/L)
Coats Recommended
Price (₹/L, 2026)
Best For
Standard Emulsion
120–130
100–110
2
₹180–280
Bedrooms, budget interiors
Premium Emulsion (Asian Royale, Berger Silk)
140–150
110–120
2
₹380–500
Living rooms, premium interiors
Exterior Paint (Apex, Weathercoat)
100–120
90–100
2–3
₹250–380
All exterior surfaces, facades
Texture Paint
70–90
80–90
1–2
₹200–350
Designer accent walls
Enamel (Nerolac, Berger)
110–130
100–110
2–3
₹250–400
Wood, metal, kitchen
Ceiling White (Snowcem)
140–160
120–130
2
₹150–250
Ceiling only, white finish
Standard deductions: Door = 7×3 ft = 21 sq ft | Window = 4×4 ft = 16 sq ft | IS SP 30 guidelines
Frequently Asked Questions — Paint Calculator
How many litres of paint do I need for a 10x10 room?
For a 10×10 ft room with 10 ft ceiling: wall area = 2×(10+10)×10 = 400 sq ft. Ceiling = 100 sq ft. Total = 500 sq ft. Deduct 20% for doors/windows = 400 sq ft. At 350 sq ft per litre coverage (2 coats): you need about 2.3 litres. For a 20L tin, one tin is sufficient for two coats.
What is the coverage of emulsion paint per litre?
Standard interior emulsion paint covers 120–150 sq ft per litre per coat. Premium emulsion covers 150–180 sq ft/litre. Exterior paint covers 100–130 sq ft/litre. Always calculate for two coats minimum. Texture and designer paints cover less — around 60–100 sq ft/litre.
How do I calculate paint quantity for walls?
Step 1: Calculate total wall area = 2 × (length + width) × height. Step 2: Subtract door and window areas. Step 3: Multiply by number of coats. Step 4: Divide by paint coverage (sq ft per litre). Round up to the nearest litre or tin size.
How many litres of paint for 1000 sq ft house?
For 1000 sq ft floor area (2 bedroom flat), wall area is approximately 2000–2500 sq ft considering all rooms. With 2 coats of premium emulsion at 150 sq ft/litre/coat = 2×2250/150 ≈ 30 litres. Add primer: 1 coat at 120 sq ft/litre ≈ 19 litres. Total: about 30–50 litres depending on paint grade.
What is the difference between primer and emulsion paint?
Primer is the base coat applied before painting. It seals the surface, improves adhesion, and reduces paint consumption. Emulsion paint is the final decorative coat. Acrylic primer covers about 120–150 sq ft/litre. Using primer reduces the number of top coats needed and improves durability.
How much does painting cost per square foot in India?
Painting costs in India: labour rate = ₹8–₹18 per sq ft for basic work. Premium painting = ₹20–₹50 per sq ft. Material cost (paint) = ₹5–₹20 per sq ft depending on brand. Total 2-coat painting with primer: ₹15–₹40 per sq ft in most Indian cities in 2026.
How do I calculate paint for exterior walls?
Measure all exterior surfaces: front, sides, and back elevations. Subtract large windows and doors. Apply exterior paint — coverage is lower (100–130 sq ft/litre) due to rough surfaces. Exterior surfaces typically need 2–3 coats. Use weather-resistant exterior emulsion for Indian climate.
How many coats of paint does a new wall need?
New plastered walls: apply 1 coat of wall sealer/primer, followed by 2 coats of emulsion. Previously painted walls in good condition: 1 coat primer + 2 coats colour. Bare concrete or rough surfaces may need a putty layer before priming. Total 3 coats minimum for best results.
What is the best interior paint for Indian homes?
Top choices for Indian climate: acrylic emulsion (most popular, washable, low-VOC). Luxury emulsion for premium finish. Enamel for wood/metal surfaces. Matt finish hides surface imperfections. Satin/semi-gloss is washable. Avoid distemper in humid areas — use waterproof emulsion or anti-fungal paint in bathrooms.
How do I calculate paint for a ceiling?
Ceiling area = room length × room width. Apply 1–2 coats of ceiling white at 150 sq ft per litre per coat. For 12×15 ft room ceiling (180 sq ft), 2 coats = 360 sq ft ÷ 150 = 2.4 litres. Round up to 3 litres or buy a 4-litre tin.
Does paint coverage differ for dark vs light colours?
Yes. Dark shades (blues, reds, greens) have lower coverage — typically 100–130 sq ft/litre. They often need 3 coats over white primer for even coverage. Light shades (white, cream, pastel) cover at 130–160 sq ft/litre and typically need only 2 coats. Always buy 10–15% extra for dark shades.
What size paint tin should I buy in India?
Available tin sizes in India: 1 litre (for small touch-ups), 4 litres (for small rooms), 10 litres (for 2–3 rooms), 20 litres (for whole flat). Buying larger tins is economical — price per litre is lower. For a 3BHK flat, a 20-litre tin + 10-litre tin is typically sufficient for 2 coats of one colour.
How do I calculate paint for wooden doors and windows?
Standard door (7ft × 3ft): two faces = 2 × 21 = 42 sq ft. Include 4 edges (2 × (7+3) × 0.15 = 3 sq ft) = 45 sq ft total per door. For enamel paint at 120 sq ft/litre, one door needs about 0.4 litres. Apply 2–3 coats for doors. Use enamel or satin wood finish paint for furniture and windows.
What is the drying time between coats of paint?
Standard acrylic emulsion: surface dry in 30–60 minutes, recoat after 2–4 hours. Enamel: surface dry 4–6 hours, recoat after 24 hours. Oil-based paints take 12–24 hours between coats. In high humidity (monsoon), double the drying time. Ideal painting temperature: 15–35°C, humidity below 85%.
How do I calculate wall area in metres?
Wall area (m²) = 2 × (room length in m + room width in m) × wall height in m. Subtract door areas (standard: 0.9m × 2.1m = 1.89 m² each) and window areas (standard: 1.2m × 1.2m = 1.44 m² each). Multiply result by number of coats, divide by coverage (m²/litre), to get litres needed.
What additional materials are needed besides paint?
For a complete painting job: wall putty (3–4 kg per 100 sq ft), primer (as calculated), sand paper (120 grit for smoothing), masking tape, plastic sheets for furniture protection, paint brushes and rollers, paint tray, and thinner (for enamel). Budget ₹3–₹8 per sq ft for sundries and tools.
How much paint do I need for a single bedroom?
Standard bedroom (10×12 ft, 10 ft ceiling): wall area = 2×(10+12)×10 = 440 sq ft. Deduct 1 door (20 sq ft) + 1 window (12 sq ft) = 408 sq ft net. Ceiling = 120 sq ft. Total = 528 sq ft. For 2 coats of emulsion at 150 sq ft/litre: 7 litres. Plus 1 coat primer: 3.5 litres. Total approximately 10–12 litres.
What is Asian Paints, Berger, and Nerolac coverage per litre?
Asian Paints Royale Gloss: ~140 sq ft/litre. Apex Exterior: ~130 sq ft/litre. Berger WeatherCoat: ~120 sq ft/litre. Nerolac Excel: ~130 sq ft/litre. Dulux Velvet Touch: ~150 sq ft/litre. These are approximate values — actual coverage varies by surface texture, application method, and number of coats.
Should I use a roller or brush for painting walls?
Rollers are faster and give a more uniform finish for large flat areas. Brushes are better for edges, corners, and detailed work. Use a 9-inch or 12-inch roller for walls, 4-inch roller for corners, and 2-inch brush for edges. Using a roller reduces labour time by 50% compared to brush-only painting.
How do I estimate painting cost for a 3BHK flat in India?
For a typical 3BHK (1000–1200 sq ft): Wall area ≈ 2000–2500 sq ft. Paint material cost ₹15,000–₹25,000. Labour ₹15,000–₹35,000. Putty + primer ₹8,000–₹15,000. Total: ₹35,000–₹75,000 depending on brand quality, city, and finish type. Premium brands and designer finishes cost significantly more.
Painting Tips for Indian Homes — Season, Sequence & Savings
Professional painting guidance for Indian homeowners and contractors.
💡 New Wall Sequence (Critical)
New plaster → cure 28 days → 2 coats wall putty → primer 1 coat → emulsion 2 coats. Skipping putty or primer on new walls causes peeling within 1–2 monsoon seasons.
💡 Best Season to Paint in India
October to March is ideal in India. Avoid painting during monsoon — humidity above 70% causes poor adhesion and brush marks. For summer painting, start before 9 AM to avoid rapid drying and lap marks.
💡 Buy from Same Batch
Check the batch number printed on tin bottom. Different batches have slight colour variation even for the same shade code. Buy all tins at once from the same dealer's stock.
💡 Estimate Labour Cost India
Painter labour 2026: ₹10–18/sq ft for 2-coat emulsion. Full putty + primer + 2-coat premium paint: ₹30–50/sq ft. Metro cities charge 30–40% more. Get at least 3 written quotes.
