# Interior Paint Cost Calculator

Calculate interior paint cost by wall square footage, coats, paint quality, and DIY vs pro labor. Includes cost to paint 1200, 1500, 2000, and 3000 sq ft house interiors.

## What this calculates

Interior painting can cost anywhere from $500 for a DIY bedroom refresh to $15,000+ for a pro-painted whole-house premium job. This interior paint cost calculator breaks down the total into paint, primer, supplies, and labor so you can compare DIY to pro quotes or budget a project room by room.

## Inputs

- **Total Wall Area to Paint** (sq ft) — min 0 — Total wall area. Rough estimate: home sq ft × 3 (for 8 ft ceilings).
- **Number of Coats** — min 1, max 4 — 2 coats standard. 3+ for dramatic color changes or low-quality paint.
- **Paint Quality** — options: Economy ($25/gal - builder grade), Standard ($45/gal - Behr/Valspar), Premium ($70/gal - Sherwin/Benjamin Moore)
- **Labor** — options: DIY (no labor cost), Pro - Basic ($1.50/sq ft), Pro - Standard ($2.50/sq ft), Pro - Premium ($3.50/sq ft)
- **Include DIY Supplies** — Rollers, brushes, tape, drop cloths (~$60). Only adds for DIY mode.
- **Include Primer** — Adds one primer coat at $30/gal (covers 300 sq ft/coat)

## Outputs

- **Paint Gallons Needed** (gal) — Rounded up to whole gallons
- **Paint Cost** — formatted as currency
- **Primer Cost** — formatted as currency
- **Supply Cost** — formatted as currency — DIY tools and consumables
- **Labor Cost** — formatted as currency
- **Total Cost** — formatted as currency
- **Cost per Square Foot** — formatted as currency — Total divided by wall square feet

## Details

## How Interior Paint Cost Is Calculated

Interior paint cost has four parts:

1. **Paint gallons:** wall sq ft × coats ÷ 350 (standard coverage per gallon)
2. **Paint price:** $25-70 per gallon depending on quality
3. **Labor:** $1.50-3.50 per sq ft of wall area for pro; free for DIY
4. **Supplies and primer:** $50-100 DIY supplies, $30/gal for primer if needed

## Paint Price Tiers

- **Economy ($25/gal):** builder-grade, one-coat rarely works, covers 300-350 sq ft
- **Standard ($45/gal):** Behr Premium Plus, Valspar Signature, solid 2-coat coverage
- **Premium ($70/gal):** Sherwin-Williams Duration, Benjamin Moore Aura, one-coat on most surfaces, 10-15 year lifespan

## Cost to Paint 1500 Sq Ft House Interior

For a 1500 sq ft home with 8 ft ceilings, interior wall area is roughly 4,500-5,000 sq ft (ceilings included). Using standard paint and pro labor:

- DIY: 12-14 gallons = $540-630 + $60 supplies = **$600-700 total**
- Pro standard: paint $540 + labor $11,250-12,500 = **$11,800-13,050 total**
- Pro premium: paint $840 + labor $15,750-17,500 = **$16,600-18,350 total**

Cost to paint 1500 sq ft house interior averages **$4,500-6,500** for pro labor when only walls are painted (excluding trim and ceilings), and **$11,000-13,000** for walls + ceilings + trim.

## Cost to Paint 3000 Sq Ft House Interior

For a 3000 sq ft home, wall area is about 9,000-10,000 sq ft. Using standard paint and pro labor:

- DIY: 25-28 gallons = $1,125-1,260 + $60 supplies = **$1,200-1,320 total**
- Pro standard: paint $1,125 + labor $22,500-25,000 = **$23,625-26,125 total**

Cost to paint 3000 sq ft house interior averages **$8,500-14,000** walls-only pro, up to **$20,000-25,000** for a whole-house premium job with trim and ceilings.

## Cost to Paint 1200 Sq Ft House Interior

For a 1200 sq ft home (townhouse or small starter), wall area is roughly 3,600-4,000 sq ft:

- DIY: 10-12 gallons = $450-540 + $60 = **$510-600 total**
- Pro standard: paint $450 + labor $9,000-10,000 = **$9,450-10,450 total**

Cost to paint 1200 sq ft house interior averages **$3,500-5,000** walls-only, **$8,500-11,000** whole-house with trim.

## DIY vs Pro

- **DIY** saves 85-90% of total cost. Expect 2-4 days of work for a 1500 sq ft home. Best for confident painters with time.
- **Pro** charges for prep (hole filling, sanding, caulking) and cleanup. Expect 3-5 days for a 1500 sq ft home. Ask for a fixed-price quote, not hourly.

## Cost by Room

| Room | Wall Area | DIY Cost | Pro Cost |
|------|-----------|----------|----------|
| Bedroom (12x12) | 400 sq ft | $85-130 | $600-1,400 |
| Master bedroom | 650 sq ft | $130-200 | $975-2,275 |
| Living room | 600 sq ft | $120-180 | $900-2,100 |
| Kitchen | 400 sq ft | $85-130 | $600-1,400 |
| Small bathroom | 200 sq ft | $60-90 | $300-700 |

## What Drives Pro Paint Quotes Up

- Dark-to-light color changes (needs primer + 3 coats)
- Textured walls (coverage rate drops to 200-250 sq ft/gal)
- Crown molding / baseboard cutting-in
- Ceiling painting (harder to reach, slower)
- Multiple colors per room (each color = more tape, time)
- Heavy repair needs (patching, skim-coating)
- Occupied homes (need to move and cover furniture)

## Frequently Asked Questions

**Q: How much does it cost to paint a 1500 sq ft house interior?**

A: Cost to paint 1500 sq ft house interior averages $4,500-6,500 for pro labor on walls only, or $11,000-13,000 for walls plus ceilings and trim. DIY costs about $600-700 including paint and supplies. Exact price depends on paint quality, color changes, and prep needs.

**Q: How much does it cost to paint a 3000 sq ft house interior?**

A: Cost to paint 3000 sq ft house interior averages $8,500-14,000 pro on walls, $20,000-25,000 for walls, trim, and ceilings with premium paint. DIY is $1,200-1,500 in materials. Larger homes benefit from bulk paint pricing (buying 5-gallon buckets saves 10-15%).

**Q: How much does it cost to paint a 1200 sq ft house interior?**

A: Cost to paint 1200 sq ft house interior averages $3,500-5,000 for pro walls-only, or $8,500-11,000 whole-house including ceilings and trim. DIY runs $500-600 including paint and supplies. Smaller homes sometimes get minimum-charge quotes ($2,000-2,500) regardless of actual size.

**Q: How many gallons of paint for interior of house?**

A: At 350 sq ft coverage per gallon per coat and 2 coats standard, a 1200 sq ft home needs 10-12 gallons, a 1500 sq ft home needs 12-14 gallons, and a 3000 sq ft home needs 25-28 gallons. Add 1 gallon extra for touch-ups.

**Q: What does a pro painter charge per square foot?**

A: Interior painters charge $1.50-3.50 per square foot of wall area in 2025. $1.50-2.00 covers basic walls with minimal prep. $2.00-2.50 is the standard range. $2.50-3.50 covers trim, doors, heavy prep, or premium finishes. Ceilings add $1-1.50 per sq ft.

**Q: Is it worth paying for premium paint?**

A: Yes for high-traffic rooms (kitchen, bathroom, hallways) and trim. Premium paint ($70/gal) covers in one coat, resists scuffs, and lasts 10-15 years vs 5-8 for economy. For bedrooms or low-use rooms, standard $45/gal paint is fine. Never buy economy paint for kitchens or bathrooms.

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Source: https://vastcalc.com/calculators/construction/interior-paint-cost
Category: Construction
Last updated: 2026-04-08