Free Real Estate & Measurement Tools

Upload or sketch a floor plan, set the scale from one known wall length, and measure square footage the same way appraisers do.

Add rooms by length × width and get a running total instantly. Supports feet and inches. Useful for quick GLA estimates before measuring.

Convert measurements on a scaled floor plan to real dimensions. Supports imperial (1/4" = 1'-0") and metric ratio (1:50, 1:100, 1:200) scales.

Select a space type (basement, attic, garage, sunroom, etc.) and get an instant ANSI Z765 ruling. Counts as GLA, excluded, or depends on conditions.

Enter subject GLA, comp GLA, and your dollar-per-sqft adjustment rate. Outputs the exact dollar adjustment with the math shown.

Two modes: find the $/sqft of a property, or find a home's value from its size and local rate. Includes U.S. benchmark data by region.

Calculate lot coverage percentage and remaining impervious allowance. Enter house footprint, driveway, patio, and other hard surfaces to check against your zoning limit.

Estimate a property's effective age based on UAD condition rating (C1-C6) and major updates completed in the last 15 years. Outputs effective age, remaining economic life, and depreciation %.

Calculate remaining economic life and physical depreciation for cost approach appraisals. Enter effective age, total economic life, and optional replacement cost new.

Estimate dollar adjustments for condition (C1-C6) and quality (Q1-Q6) differences between the subject property and comparable sales, calibrated to your value range.

Add rooms by name, length, width, and floor level to calculate GLA per ANSI Z765-2021 standards. Below-grade areas shown separately and excluded from GLA.

Isolate the market value of a single feature by comparing two matched sales. Adjusts for GLA differences and shows a full step-by-step calculation.

Estimate property value using site value plus depreciated cost of improvements. Calculates physical depreciation, functional and external obsolescence, and indicated value.

Calculate monthly absorption rate and months of supply from sales volume and active listings. Shows market condition label from strong seller's market to strong buyer's market.

Estimate property value via direct capitalization. Enter monthly rent, vacancy, operating expenses, and cap rate to get NOI, indicated value, and GRM.

Two modes: find property value from rent and GRM, or calculate GRM from price and rent. Includes market context for interpreting the result.

Calculate cubic footage from length, width, and height. Converts to cubic yards, cubic meters, gallons, and liters.

Convert between square feet and square meters instantly. Includes a reference table for common home sizes.

Calculate room volume in cubic feet, cubic meters, gallons, and liters. Supports rectangular rooms and cylinders.

Convert square feet to acres, calculate acreage from dimensions, or convert acres back to square feet. Common lot size reference included.

Convert between square feet and square yards. 1 sq yd = 9 sq ft. Reference table for common room sizes.

Convert square inches to square feet, or enter length and width in inches to get square footage.

Calculate total interior surface area of a room including walls, floor, and ceiling. Subtract doors and windows for paint estimates.

Enter length and width in feet to calculate square footage. Reference table with common room dimensions.

Calculate wall area for any room. Subtract doors and windows for accurate paint, wallpaper, or drywall estimates.

Calculate square footage for L-shaped rooms and irregular floor plans by breaking them into rectangular sections.

Calculate the perimeter of rectangles, squares, and L-shaped rooms. Great for fencing, baseboards, and trim estimates.

Calculate lot area in square feet, acres, square meters, and hectares. Supports rectangular and irregular 4-sided lots.

Calculate exterior wall area for siding, paint, and stucco. Subtract windows and doors for accurate material estimates.

Calculate ceiling area for flat and vaulted ceilings. Add multiple rooms for whole-house estimates.