PAINT CALCULATOR
How much paint for a 12 × 15 room?
Quick answer: 2 gallons + 1 quart covers a 12 × 15-ft room with 9-ft ceilings, 1 door, and 2 windows for two coats of premium paint. Net wall area: 435 sq ft.
Typical use cases for this size: medium primary bedroom, family room. Adjust the inputs below for your exact room.
HERE'S HOW MUCH YOU'LL NEED
—
—
—
ESTIMATED COST BY BRAND
Prices marked ~ are tier midpoints (brand tints at dealer). Sorted cheapest first.
FOR THIS SIZE
A 12 × 15 room is typical for
Medium primary bedroom, family room. The math works out to roughly 2 gallons + 1 quart for two coats of a quality interior paint with 9-ft ceilings.
Cost estimate
At ~$40–55/gallon for premium paint, this room runs $40–110 in paint alone for a DIY project. Add $30–50 in supplies (rollers, tape, drop cloth) and you're looking at $70–160 in materials for a typical 12 × 15 repaint.
OTHER ROOM SIZES
- 8 × 10 room paint calculator
- 10 × 10 room paint calculator
- 10 × 12 room paint calculator
- 11 × 12 room paint calculator
- 12 × 12 room paint calculator
- 12 × 14 room paint calculator
- 12 × 16 room paint calculator
- 14 × 14 room paint calculator
- 14 × 16 room paint calculator
- 15 × 15 room paint calculator
- 16 × 16 room paint calculator
- 16 × 18 room paint calculator