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myRoom Painting Cost Calculator
- A full estimate for UK room painting and decorating costs
- A handy calculator to work out room painting prices by room size, paint type, and location
- A clear breakdown of labour costs, material costs, and how much paint you may need
- How to find a local painter and decorator on MyJobQuote
Use our room painting cost calculator to get an instant estimate of how much it costs to paint a room in the UK. It uses your room size, paint type, preparation requirements, plastering needs, and location to give a more accurate guide price for painting and decorating.
This painting cost calculator helps you compare labour costs, material costs, and overall decorating costs before requesting quotes. It can also be used to compare painting and decorating prices across different areas of the UK.
Room painting prices can vary depending on the size of the room, whether the walls need prepping, whether plastering is required, and the finish you choose. Labour rates in London are often higher than in other areas, so location can make a noticeable difference to the total.
There is no single price for painting a room. Labour, materials, and room size all affect what you will pay. By entering a few details into the calculator, you will get a clear ballpark cost that you can then compare against real quotes from local painters.
Table of Contents
- How Much Does It Cost To Paint a Room?
- How to Use the Room Painting Cost Calculator
- How To Measure Your Room for Painting
- How We Calculate Your Estimate
- What May Affect the Final Quote?
- How Much Paint Do You Need for a Room?
- Example Room Painting Costs by Room Type
- Room Painting Cost Breakdown
- FAQs
- Ready to Get a Quote?
Room Painting Cost Calculator
How Much Does It Cost To Paint a Room?
This calculator gives you a guide price for room painting based on 5 main factors: room size, paint type, wall preparation, plastering, and location. Larger rooms, higher-cost finishes, and more preparation work usually increase painting and decorating costs.
If your walls need prepping first, the estimate will be higher because the decorator will need extra labour time before painting can begin. If plastering is needed, the total will rise further because this adds both materials and labour.
Your result is a ballpark cost rather than a fixed quote. A painter and decorator may adjust the final price after checking the condition of the walls, the amount of repair work needed, and whether any other areas need attention.
How to Use the Room Painting Cost Calculator
- Enter the room length, width, and height. These dimensions are used to estimate the size of the area that needs painting.
- Select the paint type. Choose matte paint, semi-gloss paint, or gloss paint. Different finishes have different material costs, which affects the total estimate.
- Choose whether the walls need prepping. If the walls need sanding, filling, stripping, or other preparation work, labour costs will usually be higher.
- Choose whether the walls need plastering. Plastering adds time, materials, and labour, so it can increase the estimate significantly compared with a standard paint-only job.
- Select your region. Labour costs vary across the UK, with London and the South East often costing more than other areas.
- Review the instant estimate. The result gives you a useful guide price for room painting and decorating costs based on the information you entered.
- Use the result as a starting point when getting quotes from local painters and decorators. The final price may change if your walls need extra preparation, you choose premium paints or you add more rooms, so compare a few written quotes before you go ahead.
How To Measure Your Room for Painting
Accurate measurements give you a more accurate estimate. Even small errors can affect how much paint is required and the likely labour costs.
Step 1: Measure the Length and Width
Measure the longest wall and the shortest wall in metres. These figures are used to estimate the floor area and the ceiling area.
- Length — Measure the longest side of the room.
- Width — Measure the shortest side of the room.
Step 2: Measure the Ceiling Height
Measure from the floor to the ceiling at the corner of the room. A standard ceiling is often around 2.4m, while older properties may have higher ceilings.
- Standard ceiling height — Around 2.4m.
- Older or period properties — Around 2.7m to 3m, or more.
Step 3: Enter the Figures Into the Calculator
Add the room length, width, and height into the calculator above. It will use these figures to estimate wall area, paint required, and the likely cost to paint a room based on your selections.
Manual Paint Area Check
If you are checking how much paint you need yourself, work out the total paintable area and then subtract large openings. As a rough guide, one internal door is about 2m², and one standard window is about 1.5m².
How We Calculate Your Estimate
Our calculator uses current UK market averages to build your estimate. It is designed to reflect common room painting and decorating costs rather than provide a fixed quote.
- Room Size — The estimate starts with the room length, width, and height. Larger rooms usually need more paint and more labour time, so the total cost is higher.
- Paint Type — Matte paint, semi-gloss paint, and gloss paint have different material costs. The finish you choose affects both the paint price and the type of work involved.
- Preparation Work — If you select "Needs Preparation," we add approximately half a day to a day of additional labour time for filling, sanding, and sugar soaping. Re-plastering is a much bigger job, which adds more time, and cost.
- Plastering — If the walls need plastering first, the estimate rises further because plastering adds a separate stage of labour and materials before painting can begin.
- Regional Labour Rates — Labour costs vary depending on where you live. London and the South East often sit at the higher end, while other areas may be lower.
What May Affect the Final Quote?
The calculator gives you a useful guide price, but a written quote may still change after a decorator inspects the room. This is because some jobs involve extra work that is hard to judge from room size alone.
- Wall condition — Cracks, peeling paint, stains, and uneven surfaces can add preparation time.
- Plaster repairs — Damaged plaster or full re-plastering will increase labour and material costs.
- Woodwork and details — Skirting boards, door frames, window frames, radiators, and coving are often priced separately and can increase decorating costs.
- Access and furniture — Tight spaces, full rooms, or difficult access can slow the job down.
- Paint quality — Higher-end finishes usually cost more than standard products.
If the walls need more than basic preparation, you may also need to factor in indoor wall plastering costs.
How Much Paint Do You Need for a Room?
Paint quantity affects material costs directly, so it is useful to understand how decorators estimate how much paint is required. In general, larger rooms and rougher surfaces need more paint than smaller rooms in good condition.
Paint coverage is usually measured in square metres per litre (m²/L). This shows how much surface one litre of paint can cover for one coat.
Typical Coverage Rates by Paint Type
| Paint Type | Typical Coverage (m²/L) | Typical Use |
|---|---|---|
| Matte Paint | 10–12m² | Walls and ceilings |
| Semi-Gloss Paint | 12–14m² | Walls, woodwork, and higher-wear areas |
| Gloss Paint | 12–16m² | Woodwork, trims, and skirting boards |
How To Estimate Paint Required
You can estimate the amount of paint needed with this formula:
(Paintable Area × Number of Coats) ÷ Coverage Rate = Total Litres Needed
This helps you understand how much paint you need before buying materials or reviewing quotes.
Example
If a room has 30m² of paintable wall area and you use matte paint with a coverage rate of 12m²/L:
- 30m² ÷ 12 = 2.5L for 1 coat.
- For 2 coats, you would need about 5L.
Real-world paint use may be higher if the surface is rough, the walls are freshly plastered, or the colour change is significant.
Example Room Painting Costs by Room Type
The calculator gives you a tailored estimate, but these typical ranges can help you sense-check the result. Actual painting and decorating costs vary depending on preparation, plastering, and location.
| Room Type | Typical Size | Typical Time | Typical Cost Range |
|---|---|---|---|
| Box Room | 7–9m² | 4–6 hours | £175–£300 |
| Small Bedroom | 10–12m² | 1 day | £250–£400 |
| Large Bedroom | 14–20m² | 1–1.5 days | £350–£650 |
| Small Living Room | 12–16m² | 1–1.5 days | £300–£550 |
| Large Living Room | 20–30m² | 1.5–2 days | £500–£1,000 |
Costs may be higher if the walls need prepping first, if plastering is required, or if your decorator is pricing extra woodwork such as skirting boards and frames.
Room Painting Cost Breakdown
The calculator uses typical UK labour and material rates to build the estimate. Exact prices vary by region and wall condition, but these figures are useful when comparing room painting and decorating costs.
| Item | Typical Cost |
|---|---|
| Decorator Day Rate (Outside London) | £150–£250 per day |
| Decorator Day Rate (London) | £250–£350 per day |
| Painting Cost per m² | £10–£20 per m² |
| Matte Paint | £25–£40 per 5L |
| Semi-Gloss or Gloss Paint | £30–£60 per 2.5L |
| Plastering Work | Usually priced separately |
If plastering is needed before painting, the final quote may increase significantly. For a broader guide, see our room painting cost guide and our guide to indoor wall plastering costs.
FAQs
How Much Does It Cost to Paint a Room in the UK?
Does Wall Preparation Increase the Cost?
Does Plastering Increase the Cost of Painting a Room?
How Long Does It Take To Paint a Room?
Do I Need To Move Furniture Out?
What’s the Best Type of Paint for Each Room?
Is It Cheaper To Paint Yourself?
Ready to Get a Quote?
Painting is a great way to refresh a room, boost its value and make the space truly your own. But it's important to budget carefully to avoid unexpected costs. By understanding the key factors that affect painting prices and using a painting cost calculator, you can plan ahead and stay in control of your project. Try our wall paint calculator to get a quick estimate based on your room and preferences.
Get up to 3 free, no-obligation quotes from painters near you. All you need is a couple of minutes of time and some basic details about what you’re after. We’ll handle the rest!
Last updated by MyJobQuote on 20th May 2026.
