Room painting rough estimate

Paint a Room Estimate

Estimate paint, primer, basic tools, rough material cost, and DIY time for painting a room with wall-by-wall measurements.

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Create a full DIY project plan

Turn this rough estimate into a step-by-step plan with a material checklist, tool list, prep notes, shopping categories, and printable planning guidance.

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Rough estimate only

This tool uses wall rows, assigned windows and doors, and rough paint coverage assumptions. Real costs can change based on local prices, taxes, product coverage, ceiling texture, repairs, trim details, and waste.

Measurement system

Room basics

Use the room dimensions as a quick start, then adjust individual walls and assign windows or doors to each wall.

Resetting rebuilds four walls from the room dimensions and adds one typical window and one typical door.

Wall-by-wall details

Add each painted wall and assign openings to the wall they belong on.

Wall 1

Windows on this wall

Subtract window openings from this wall only.

Doors on this wall

Subtract door openings from this wall only.

No doors assigned to this wall.

Wall 2

Windows on this wall

Subtract window openings from this wall only.

No windows assigned to this wall.

Doors on this wall

Subtract door openings from this wall only.

Wall 3

Windows on this wall

Subtract window openings from this wall only.

No windows assigned to this wall.

Doors on this wall

Subtract door openings from this wall only.

No doors assigned to this wall.

Wall 4

Windows on this wall

Subtract window openings from this wall only.

No windows assigned to this wall.

Doors on this wall

Subtract door openings from this wall only.

No doors assigned to this wall.

Project planning note

Review the wall measurements, openings, site condition, material assumptions, and tool needs before buying supplies. This calculator is meant for rough DIY planning, not a professional quote.

Recommended materials/tools

  • Primary materials shown in the estimate summary
  • Basic prep, protection, and cleanup supplies
  • Appropriate hand tools for the selected project conditions

Area details

  • Wall area before openings: about 352 sq ft
  • Wall area after openings: about 319 sq ft
  • Ceiling area included: about 120 sq ft
  • Openings subtracted: about 33 sq ft
  • 4 walls, 1 window, and 1 door entered by wall
  • Total wall length for future trim planning: about 44 ft

Basic DIY checklist

  • Paint in standard quality range
  • Primer may not be needed if the walls are clean and similar in color
  • Painter tape, roller, brush, tray, drop cloth, sandpaper, and patching compound if needed
  • Use the wall rows to double-check which openings have been subtracted before buying paint

When to call a pro

  • Call a pro if you find hidden damage, unsafe access, moisture, electrical, plumbing, structural, or code concerns.
  • Get qualified help for suspected lead paint, mold, active leaks, major drywall repair, or stairwell/high-wall access.
  • If the project no longer matches a simple room repaint, use a larger project plan or professional quote before buying supplies.

This is a rough DIY planning estimate only. Local prices, taxes, waste, product coverage, wall texture, ceiling texture, repairs, and drying time can change the real cost and timeline.

Saved project beta

Save this estimate

Save this rough estimate to a DIY project area so you can come back to it later.

We will also email the saved project link. Keep the link shown after saving as a backup.

Rough estimate

$190 - $320

View result

DIY planning notes

Paint a Room planning guide

Use this quick guide with your rough estimate to think through walls, rooms, ceilings, trim, baseboards, and basic paint planning and whether this is a good DIY project for you.

What affects this estimate

  • Project size and measured area
  • Existing condition and prep needs
  • Material quality and product choices
  • Removal, access, or cleanup needs

Basic materials/tools

Materials

  • Paint or finish product
  • Primer or prep supplies if needed
  • Tape, drop cloths, rollers, brushes, and trays

Tools

  • Tape measure
  • Roller or brush
  • Step stool or ladder if needed

Before you start

  1. 1Measure the project area and note openings or trim details.
  2. 2Check surface condition and decide whether primer or prep is needed.
  3. 3Protect nearby surfaces before buying supplies and starting work.