Space PlanningFree Utility Tool

Room Area & Multi-Trade Calculator — Floor, Walls & Mouldings

Calculate square footage, perimeter, wall surface area, baseboard moulding, flooring boxes, and paint gallons simultaneously.

Units:

1. Room Shape

2. Dimensions (Feet)

Length

Width

Ceiling Height

Door Openings (Baseboard Breaks)

Door Width (inches)

Multi-Trade Spatial Report

224 sq ft

Wall Surface: 540 sq ft | Perimeter: 60 ft

Baseboard Moulding (with 10% waste):61 ft

Crown Moulding:66 ft

Flooring Boxes (20 sf/box):13 Boxes

Wall Paint Gallons (2 coats):4 Gallons

AI Spatial Design

Design your 224 sq ft layout

Generate full 3D architectural plans with furniture placement and 60-30-10 palette swatches.

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Architectural Calculation Standard & Methodology

Our Methodology → →

📐 NKBA & IBC StandardsBased on 36" egress clearances & universal spatial codes

🛡️ Zero Retailer Bias100% independent formulas with zero sponsored overrides

⚡ Instant Contractor SpecPrintable and copyable specs for painter and flooring crews

🔒 100% Free & PrivateNo signup, no email gates, calculations run client-side

Multi-Trade Sizing

Simultaneous Floor, Wall & Trim Estimation

One room measurement powers three key architectural trades:

1. Floor Area: Length × Width (Powers Flooring & Rug sizing)

2. Wall Surface Area: Perimeter × Ceiling Height (Powers Paint & Wallpaper)

3. Linear Perimeter: Sum of walls minus door openings (Powers Baseboards & Crown Moulding)

Guidance & Clarifications

Frequently Asked Questions

Divide the room into simple geometric sections (rectangles and squares). Measure each section individually, calculate their square footages, and sum them together. For alcoves or bay windows, measure the extension separately.

Baseboard mouldings require 45-degree inside and outside miter cuts at every corner. Each cut shaves off several inches of material, and end scraps under 12 inches cannot be reused along long unbroken walls.

Spatial Planning & Blueprints