Interior Painting calculator

Interior Painting Cost Calculator (Ballpark Estimates)

Estimating interior painting is more complex than exterior work. Wall layouts, ceiling height, trim detail, access, repairs, and color changes all affect labor. Even experienced professionals treat interior estimating as a skill that’s refined over time.

This calculator is designed to give you a general ballpark, not an exact quote.

Step 1: Start With Floor Square Footage

Measure the floor square footage of the room(s) you plan to paint.

Example:A 10×10 room = 100 sq ft

Step 2: Apply the Multiplier

Use the multiplier below based on what’s being painted:

• Walls only: × 6.3

• Walls + ceilings: × 7.2

• Walls + ceilings + trim: × 8.8

These multipliers assume:

• Two coats

• Standard ceiling height

• Professional prep

• One color per surface

• Standard professional-grade paint (low–mid tier, such as SuperPaint)

Example Calculations

10×10 room (100 sq ft)

• Walls only:100 × 6.3 = $630

• Walls + ceiling:100 × 7.2 = $720

• Walls + ceiling + trim:100 × 8.8 = $880

Important Notes

This calculator assumes an average-complexity room. Pricing may increase based on:

• Multiple colors or accent walls

• Higher ceilings or difficult access

• Wall repairs, heavy patching, or texture issues

• Premium paint upgrades

This is a guideline, not a quote.

Bottom Line

Interior painting is highly detail-dependent. While calculators can help set expectations, the only way to get an accurate price is with an in-person evaluation.

Our team provides customized estimates based on your home, your goals, and the level of finish you expect.