How Much Paint for a 2,000 Sq Ft House Interior?
Quick Answer
Painting the full interior of a 2,000 square foot house takes about 29 gallons of wall paint for two coats, plus about 6 gallons for ceilings and 3 gallons for trim and doors. Plan on roughly 35 to 40 gallons total. This is a whole-house estimate — measure room by room for a precise order.
- Walls (two coats): ~29 gallons
- Ceilings (one coat): ~6 gallons
- Trim, doors, and closets: ~3 gallons
- Whole-house total: ~35–40 gallons
Formula
Interior wall area runs roughly 2.5 times the floor area in a typical home. Multiply floor area by 2.5, then by the number of coats, and divide by 350 square feet of coverage per gallon.
Step-by-Step Calculation
- 1
Estimate wall area
2,000 × 2.5 = 5,000 sq ft of wall
- 2
Two coats
5,000 × 2 = 10,000 sq ft to cover
- 3
Wall gallons
10,000 ÷ 350 = 28.6 → ~29 gallons
- 4
Add ceilings and trim
~6 (ceilings) + ~3 (trim) → 35–40 total
Interior Paint by House Size (two coats, walls)
| Floor Area | Est. Wall Area | Wall Gallons | Whole-House Total* |
|---|---|---|---|
| 1,000 sq ft | 2,500 sq ft | ~15 gallons | ~18–22 gallons |
| 1,500 sq ft | 3,750 sq ft | ~22 gallons | ~27–31 gallons |
| 2,000 sq ft | 5,000 sq ft | ~29 gallons | ~35–40 gallons |
| 2,500 sq ft | 6,250 sq ft | ~36 gallons | ~44–50 gallons |
*Whole-house total adds ceilings and trim. These are planning estimates — open-plan homes have less wall area, and high or vaulted ceilings have more.
Frequently Asked Questions
How many gallons to paint a 2,000 sq ft house interior?
Plan on about 35 to 40 gallons for a full two-coat job including walls, ceilings, and trim. Walls alone take about 29 gallons for two coats.
Why is the estimate a range?
Actual wall area depends on layout. Open-plan homes have fewer interior walls (less paint), while homes with many small rooms, hallways, or vaulted ceilings have more. Measuring each room is the only way to get an exact figure.
How much does it cost to paint a 2,000 sq ft house interior?
Paint alone runs about $1,000–$1,600 for quality product. A professional whole-house interior job typically costs $4,000–$10,000 depending on prep, trim detail, and local labor rates.