Paint Calculator
Overview
Calculate how much paint you need for walls, ceilings, and trim. Get gallon requirements, cost estimates, and coverage tips for your painting project.
Key Facts
| Field | Value |
|---|---|
| Calculator ID | paint |
| Category | Lifestyle |
| Vertical | Lifestyle & Culture |
| App route | /verticals/lifestyle/paint |
| API endpoint | /api/public/calculate?id=paint |
Inputs
| Input ID | Label | Type | Required | Default | Constraints |
|---|---|---|---|---|---|
| - | - | - | - | - | - |
How to Use
- Measure Room — Measure room length, width, and ceiling height in feet
- Count Openings — Count doors and windows (we subtract their area)
- Choose Options — Select number of coats (2 recommended) and whether to paint ceiling
- View Results — See gallons needed, total cost, area coverage, and primer recommendations
Result Surfaces
| Output | Display Type | Format |
|---|---|---|
| Computed results | result-card | - |
Related Calculators
FAQ
How much area does one gallon of paint cover?
One gallon covers approximately 350-400 square feet on smooth walls with one coat. Textured or porous surfaces (like new drywall) use 20-30% more paint. Always round up and buy an extra gallon for touch-ups.
Do I need primer before painting?
Use primer when: painting new drywall, covering dark colors with light colors, painting over stains, or switching from oil-based to latex paint. Primer improves paint adhesion and coverage. Skip primer if repainting similar colors on previously painted walls.
How many coats of paint do I need?
2 coats are recommended for most projects. First coat provides base coverage, second coat ensures even color and durability. Some premium paints claim "one-coat coverage" but two coats still look better and last longer.
Evidence
src/lib/calculators/registry.ts(metadata)src/lib/calculators/page-registry.ts(page/HowTo metadata)src/lib/calculators/lifestyle/paint.ts(calculator config)
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