Paint for multiple rooms
Subtract openings and combine matching paint.
Paint and Wallpaper Calculators
Plan paint for multiple rooms or wallpaper rolls with measured openings, user coverage, trim and pattern-repeat assumptions.
Wallpaper rolls
Check drops, trimming and pattern repeat.
Choose your project
Start with the job you are measuring. Keep its dimensions and assumptions together.
Paint Quantity for a Bedroom
Estimate bedroom wall paint with measured door and window deductions, user coverage, coats and whole-can rounding.
Plan Wall and Ceiling Paint Separately
Estimate wall and ceiling paint separately when their products, coverage, coat counts or can sizes differ.
Paint Quantities for a Whole-Home Project
Build a room-by-room paint estimate with separate openings, coats and product groups, then round compatible totals to cans.
Wallpaper Rolls for a Feature Wall
Estimate full-height wallpaper strips for a feature wall and see how free versus straight matching changes the roll count.
Plan Wallpaper for Multiple Walls
Plan wallpaper for walls with different heights by grouping equal strip lengths and keeping conservative roll rounding visible.
A material estimate starts with your measurements
Follow each quantity from the measured space to the amount you order.
Measurements
Measure each section and choose its units. Keep separate areas and openings explicit.
Net quantity
Review the measured area or quantity before applying your material settings and allowance.
Your allowance
Enter an allowance that suits your job. See it separately from the net quantity.
Packs or bulk
Use your product's yield or capacity. Round up whole packs only after the required quantity is known.
Make sense of the numbers
What to Copy from a Paint Coverage Label
Identify the coverage, unit, coat basis and can capacity needed for a paint estimate without relying on a generic coverage default.
Read the guideMeasure Doors and Windows Before Estimating Paint
Measure doors and windows for a paint estimate without standard-size guesses, duplicated deductions or openings assigned to the wrong surface.
Read the guideRead the complete category guide, questions and sources
Paint works by surface, coats and coverage
Select the surfaces to paint, deduct measured openings, then enter the number of coats and the coverage printed for your product. Different products or finishes belong in different purchase groups.
Wallpaper works by full-height strips
Roll width determines how many strips a wall needs. Wall height, trim and pattern repeat determine the length of each strip. The useful number of strips in a roll matters more than its total area alone.
Keep room measurements visible
A whole-room or whole-home estimate should still show the dimensions and assumptions behind each part. The project list lets you keep those details while combining compatible material requirements.
Sources and method
- PackLedge quantity methods
Original derivations using geometry, ratios, sums and whole-package rounding. Each calculator explains its assumptions and worked examples.
- Your selected product label or technical sheet
The source for the coverage, mixed yield, density, package capacity, sheet dimensions or wallpaper repeat that you enter.
- WallPops — Wallpaper Pattern Repeats and Matching ↗
Manufacturer explanation of free/random matching, straight matching and pattern-repeat terminology.