Tool
Square Footage Calculator
Add up rectangle, triangle, and circular areas across multiple rooms — feet/inches or metric.
Spatial Toolkit
Tools
Four calculators for measuring and planning a space. Every calculation runs locally in your browser — nothing you type is sent anywhere or stored.
Tool
Paint Calculator
Walls and ceiling, doors and windows, coats, and coverage per can — gallons and quarts.
Tool
Flooring Calculator
Multiple rooms, an editable waste factor, and box-count rounding for any flooring material.
Tool
Image Aspect Ratio & DPI Converter
Pixels, inches, and centimeters for listing photography — aspect ratio, DPI, and print-size checks.