Choose an Interior Finishing Tool
These calculators help you plan interior renovations, room updates, and finishing work. Quickly estimate materials to reduce waste and avoid over-ordering.
Drywall Calculator
Estimate drywall sheets, compound, and fasteners for walls and ceilings.
Open calculator →Tile Calculator
Calculate tile counts, boxes, and waste allowance for floors and walls.
Open calculator →Wallpaper Calculator
Estimate wallpaper rolls based on wall size and pattern repeat.
Open calculator →Paint Calculator
Determine paint coverage for single or multiple coats.
Open calculator →Paint Cost Calculator
Estimate paint project costs based on room size and labor.
Open calculator →Laminate Flooring Calculator
Calculate flooring boxes, row layout, and waste allowance.
Open calculator →Curtain Size Calculator
Determine curtain panel width and length with proper fullness and rod sizing.
Open calculator →What These Interior Tools Help You Calculate
- Wall and ceiling coverage: drywall sheets and paint volume.
- Floor coverage: tile and laminate flooring quantities.
- Decorative finishes: wallpaper rolls and curtain sizing.
- Cost planning: basic budgeting for paint projects.
Tips for Accurate Interior Estimates
- Measure each wall separately for irregular rooms.
- Subtract windows and doors when estimating paint or drywall.
- Add 10%+ extra for tile and flooring waste from cuts.
- Confirm manufacturer coverage rates before purchasing paint or materials.
For detailed formulas and assumptions, see our Methodology and Data Sources.
Important Estimate Disclaimer
All results are general estimates and may vary depending on product specifications, installation methods, and site conditions.
Always verify measurements and consult installation guides or professionals for structural or load-bearing applications.