Measure the right quantity
Floor area describes the room footprint; wall area depends on perimeter and ceiling height minus openings. Keep ceilings and trim separate, and verify product coverage and coats before buying paint.
Interior painting worksheet
Interior House Painting Cost Calculator
Measure walls and ceilings, estimate paint quantities, and separate product prices from application, preparation, primer and baseboard labor hours.
No signupYour prices and hoursNot a painter bid
Live worksheet preview
Quantities and priced materials
Review this preview, then calculate to confirm it and enable copy / print.
Priced materials (partial worksheet)Prices not enteredUnknown items are not included.
Wall + ceiling area3,120 sq ftPainted surfaces, not floor area
Known material subtotalNot pricedPartial — some product prices missing
Main paint20 gal2 coat(s)
Primer2 gal624 sq ft; one coat
Baseboard paint0 gal0 sq ft painted area
Total person-hoursIncompleteApplication, prep, primer, selected baseboards
Missing from the listed cost subtotal
- Wall / ceiling paint price per gallon
- Primer price per gallon
- Application labor total person-hours
- Prep / repairs labor total person-hours
- Primer labor total person-hours
- Billed rate per person-hour
Blank hours and prices are unknown, not zero. You can use or export this as a quantity / material worksheet.
Your listed entries
Materials and labor
Wall / ceiling paint20 gal × price not entered
Not pricedPrimer2 gal × price not entered
Not pricedApplication laborHours not entered × rate not entered; total for the selected scope and coats
Not pricedPrep / repairs laborHours not entered × rate not entered; total for the selected scope and coats
Not pricedPrimer laborHours not entered × rate not entered; total for the selected scope and coats
Not pricedKnown materials: Not priced (partial). Known labor: Not priced (partial). Other quoted costs are blank and excluded.
How this worksheet works
Listed-cost subtotal = main paint + separate primer + selected baseboard paint + (application + preparation + primer + baseboard person-hours) × entered hourly rate + other quoted total. Missing required prices or hours block the combined subtotal.
Quick mode estimates wall area from floor area and layout. By room uses perimeter × height minus 21 sq ft per door and 15 per window. Gallons = area × coats ÷ per-coat coverage, rounded up separately by product. Baseboard area = linear feet × painted width in inches ÷ 12. Enter hours for all selected coats; do not multiply them again.
Sources checked October 21, 2026. BEHR publishes 250–400 sq ft per gallon; the editable 325 default is the arithmetic midpoint, not observed job coverage. Prices are entered by you. No regional, quality, automatic productivity or contingency multiplier is applied. Drying time is separate from productive person-hours.
Worksheet inputs and exclusions
Quick mode: 1200 sq ft floor area, 8 ft height, standard layout. Scope: Walls only; 2 finish coat(s). Wall / ceiling area: 3,120 / 0 sq ft. Main paint coverage: 325 sq ft/gal per coat. Prep: standard; primer: spot; 624 sq ft, one coat, 325 sq ft/gal per coat. Spot primer assumes 20% of selected wall / ceiling area. Baseboards: 0 linear ft (not selected). Coverage defaults of 325 are midpoint assumptions within 250–400 sq ft/gal per coat, not measured job coverage. Replace with your product label and surface needs. Product prices, person-hours, and billed rate are user inputs. No region multiplier. Hours cover the entire selected job and coats, counted once; two people working four hours each = eight person-hours. Other quoted costs are blank and excluded. Protection, supplies, cleanup, tax, delivery, minimum charges, and contingency are excluded unless explicitly included in your entries; avoid double counting. Doors, casing, cabinets, specialty finishes, and baseboard priming are excluded. Quick geometry uses planning layout factors, not a measured takeoff. By-room openings deduct 21 sq ft/door and 15 sq ft/window. Gallons round up separately by product; no separate waste allowance. Budgeting worksheet only; not a painter quote, market average, coverage guarantee, or lead/asbestos assessment.
How do I estimate interior painting from floor area or room dimensions?
Use Quick estimate for a floor-area-based starting point, or By room for measured wall geometry. Select walls, ceilings, baseboards, coats and primer to estimate quantities. Enter actual product prices and separate person-hours before combining listed costs. Exterior painting is outside this tool's scope.
Compare the same written scope
Match painted surfaces, coat count, primer, patching, protection, paint line, trim, and cleanup. Lead-safe work or major repairs need separate review rather than a simple repaint allowance.
Need a related estimate?
Use measured floor area and a flooring waste allowance for a separate floor project; do not reuse paintable wall area.
Flooring Cost CalculatorHow to use this interior painting calculator
Use it for a planning range
- Use Quick estimate for an early budget from floor area, ceiling height, and room layout; switch to By room when you have dimensions and opening counts.
- Choose walls, ceilings and optional baseboards, then set coats, separate primer and per-coat coverage. Enter the actual product prices for the selected surfaces.
- Enter total person-hours separately for application, preparation, primer and baseboards, plus the rate billed per person-hour. Add non-overlapping quoted extras and compare written scopes.
Example quick interior estimate
- 1,200 sq ft of floor area with 8 ft ceilings and a typical room layout
- Walls only, 2 coats, standard patching and spot primer over an assumed 20% of wall area
- 325 sq ft/gallon per coat; enter actual product prices and labor hours
Quick mode estimates 3,120 sq ft of walls. Two coats at 325 sq ft/gallon require 20 gallons of main paint; one primer pass over the assumed 624 sq ft requires 2 gallons. Without entered prices and hours, there is no combined installed-cost estimate.
At the observed single-can prices of $37.98 and $30.98, these two material lines total $821.56 before unquoted extras. Hypothetical 40 application + 8 prep + 4 primer person-hours at $55/hour add $2,860, yielding a listed subtotal of $3,681.56. Those hours and rate are an illustration, not a measured job or national benchmark.
Common cost drivers
- Paintable area and coat count drive material quantities; room geometry still needs on-site verification.
- Ceilings and narrow baseboards need separate application hours. Casing, doors, crown, closets and stairs require scope review and are not inferred from baseboard footage.
- Surface repairs, caulking, sanding, scraping, stain blocking, and primer requirements can move the estimate more than paint brand alone.
- Occupied-home protection, access, cleanup and minimum charges need written scope confirmation.
Planning tables for this estimate
Dated material observations — enter your current price
Home Depot single-gallon listings observed October 21, 2026. No store, destination, stock or delivered price was verified. These are distinct products, not economy-to-premium national endpoints.
| Product and size | Observed price | Scope limit |
|---|---|---|
| BEHR Premium Plus 205001, UPW eggshell, 1 gal | $37.98 | Main-paint example; check sheen, color and substrate |
| BEHR 07501 Kitchen, Bath & Trim primer, 1 gal | $30.98 | Separate primer; not required on every repaint |
| BEHR Premium Plus 305001, UPW semi-gloss, 1 gal | $43.98 | Baseboard finish example; does not price door work |
Bulk and credit-card offers are not adopted. Listings say online prices include PaintCare fees in specified states; destination applicability, tax and delivery still need checking. No sample price is automatically loaded into your worksheet.
Person-hours are different from elapsed days
Estimate Rocket's undated official help gives one template example: 600 sq ft of interior walls, two coats, at 80 surface sq ft per person-hour = 7.5 person-hours. Its Emerald coverage of 175 sq ft/gallon already covers two coats; do not multiply those example requirements by two again.
| Measure | Meaning | What to confirm |
|---|---|---|
| 8 person-hours | Two painters each working 4 hours | Use a per-person billed rate, not a crew-hour rate |
| Application, prep, primer, baseboards | Separate active work categories | Enter totals including selected coats; avoid overlapping hours |
| Recoat interval or drying days | Elapsed waiting time | Not automatically productive or billable labor |
The vendor attributes templates to PCA; the underlying table was not independently verified. This example establishes no national speed or hours for other tasks. BLS wages are not billed rates.
Use this range to compare local quotes
Before comparing painting quotes, make sure each written bid uses the same paintable area, prep level, coat count, material line, trim scope, and cleanup assumptions.
Quote checklist
- Measured paintable areaRoom dimensions, wall height, openings, ceilings, closets, and excluded rooms.
- Prep scopePatching, sanding, caulking, scraping, wallpaper removal, stain blocking, and primer.
- Paint systemBrand line, sheen, primer, number of coats, and whether trim or doors use a separate finish.
- Masking and protectionFloors, fixtures, furniture moving, occupied-room setup, and containment.
- Trim and detail workBaseboards, crown, casing, doors, built-ins, stairs, or other narrow surfaces that take longer per sq ft.
- Repair exclusionsDrywall repair, rot repair, lead-safe remediation, carpentry, or power washing that may be quoted separately.
- Cleanup, warranty, and paymentTouch-up expectations, debris removal, workmanship warranty, deposit schedule, and change-order rules.
What is not included
- Exterior painting, drywall replacement, wallpaper removal, cabinet refinishing, lead-paint remediation, unusual access equipment, and specialty decorative finishes.
- Unquoted supplies, protection, cleanup, tax, delivery, PaintCare adjustments, minimum charges, baseboard priming, doors, casing and crown molding. The optional other quoted total includes only the amount entered; blank is not confirmed free.
When to call a licensed pro
- Call a qualified painter or renovation contractor for lead-paint questions, water damage, major drywall repair, high-access interiors, or finish-critical work.
- Compare quotes by prep scope, primer, coat count, trim detail, protection, and cleanup instead of only by total price.
Cost data note
Material prices and person-hours start unfilled. Enter product prices, per-coat coverage, applicable work hours and a billed rate per person-hour. Dated retail observations and a separate software-template labor example explain scope; they do not establish national prices or production rates.
This calculator uses a US national baseline plus broad state/region adjustment. It does not provide ZIP-level pricing.
Sources, assumptions, and review dates
Interior painting uses your product prices and separate person-hours, with no regional multiplier. Missing required entries remain unknown.The example amounts illustrate the stated inputs; they are not a survey of completed projects, live local prices, or offers from an installer. Local availability must be checked separately.
Price and quantity cross-checks
Sources checked October 21, 2026. These are partial comparisons, not verification of every rate.Material observations and a separate wall-only labor example have different scopes. They are not matched national installed prices or a guarantee of crew productivity.
- BEHR: Premium Plus per-coat coverage and drying
250–400 sq ft/gallon is a product coverage range, not labor productivity. The worksheet's editable 325 midpoint is an assumption. The manufacturer distinguishes drying/recoat intervals from application time.
- Home Depot: BEHR 205001 eggshell, 1 gallon
Observed October 21, 2026: $37.98 single-can UPW price. Bulk/card offers excluded; no destination, stock, tax or delivery verification. Static observation, not automatic prefill or national endpoints.
- Home Depot: BEHR 305001 semi-gloss, 1 gallon
Observed October 21, 2026: $43.98 single-can UPW price. Distinct baseboard-finish example, not the same product as wall eggshell. Confirm all local charges; no automatic prefill.
- Home Depot: BEHR 07501 primer, 1 gallon
Observed October 21, 2026: $30.98. A separate primer observation, not a price inferred from paint quality. Primer need and number of coats require surface review.
- BEHR: No. 75 primer coverage and use
250–400 sq ft/gallon; substrate and application affect yield. Spot scope and the editable 325 default are planning assumptions, not a product guarantee or proof that one coat handles every stain.
- Estimate Rocket: two-coat interior-wall template example
Its 600 sq ft walls / 80 sq ft per hour = 7.5 labor hours already includes two coats. Undated software-template example attributed to PCA, not independently verified national productivity. It does not establish prep, primer, ceiling or baseboard hours.
- Benjamin Moore: painting sequence and elapsed drying time
Its room-duration guidance includes preparation, coats and drying. Elapsed days cannot be converted directly into person-hours or contractor charges.
- BLS: construction and maintenance painter wages
Employee wage context, not contractor billing rates. Business overhead, equipment, benefits, travel, and profit are different costs.
Planning and scope guidance
- FTC: choosing a contractor and comparing written estimates
Contractor checks and written estimate scope; this guidance does not supply our cost rates.
- EPA: lead renovation, repair and painting guidance
Lead-safe renovation context when work disturbs older painted surfaces; not a remediation cost allowance or a site assessment.
These references explain planning and scope checks. They do not validate every dollar amount in the model. See our estimation methodology for quantity calculations, regional factors, and cost allocation limits.
Content updated: . Cost assumptions last reviewed: . A wording update does not mean material or labor rates were resurveyed.
Published by Home Cost Calculator Hub. Report a calculation or source concern with the page and assumptions you used.
Interior painting cost calculator FAQ
Does this painting cost calculator include ceilings and trim?
Only when selected. Ceiling area is separate; trim here means baseboards only. Baseboard paint uses linear feet and painted width; doors, window casing, crown molding and their priming are outside this quantity model.
Is this a contractor quote?
No. It is a quantity and listed-cost worksheet. A subtotal appears only after required product prices and applicable hours are entered; it is not a complete contractor quote or guaranteed price.
How is preparation labor included?
Enter the total preparation person-hours for patching, sanding, masking and related work. The prep label does not automatically assign hours. Enter separate primer application time separately and avoid overlapping the same work.
When should I call a professional painter?
Call a professional when the job involves lead-paint concerns, repair-heavy walls, moisture damage, high interior access, occupied-home protection, or finish expectations beyond a normal repaint.
Does the calculator give a guaranteed local painting price?
No. Product prices, person-hours and the billed hourly rate are your inputs, without a regional multiplier. The painter must confirm measurements, surface condition, products, all coats, minimum charges and exclusions before quoting.
Should I use Quick estimate or By room?
Use Quick estimate when you know floor area and need an early budget. Use By room when you can enter room dimensions and opening counts or need a more comparable worksheet for painter bids.