Measurement Calculators
Square footage, cubic yards and unit conversions used across every project. 21 free calculators.
Nearly every project calculator on this site is really "measure a space, convert it to the units a material is sold in" - and these are the general-purpose versions of that conversion, useful on their own for odd-shaped rooms or quick unit checks.
Use these when you need a raw conversion (cubic feet to cubic yards, square feet to square yards) rather than a specific material's shopping list.
Last reviewed September 2026
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All 21 Measurement calculators
Linear Feet to Square Feet Calculator
Linear feet to square feet calculator for flooring, decking, siding, or trim. Enter the length and the board width to see the coverage in sq ft.
Square Footage Calculator
Square footage calculator for rectangles, circles, and triangles. Enter the dimensions and see the area in sq ft, using the exact formula for each shape.
Cubic Yards Calculator
Work out the cubic yards of concrete, mulch, or gravel an area needs from its length, width, and depth in inches. Shows cubic yards and cubic feet.
Cubic Yards to Tons Calculator
Cubic yards to tons calculator for gravel, mulch, soil, sand, and other bulk materials. Set the volume and density to get the weight in tons.
Cubic Feet Calculator
Get the volume of a box, room, or bin in cubic feet from its length, width, and height. Prefilled defaults show a live result along with the math.
Tank Volume Calculator
Get a cylindrical tank's full volume in gallons and cubic feet from its diameter and length. Use this tank volume calculator for upright or horizontal tanks.
Feet and Inches Length Calculator
Feet and inches length calculator for adding or subtracting two measurements. The carrying and borrowing across 12 inches is handled for you.
Inch Fraction Calculator
Inch fraction calculator for turning decimal inches into the nearest 8th, 16th, 32nd, or 64th, with the exact decimal shown so you can see the rounding.
Scale Conversion Calculator
Scale conversion calculator for model railroads, dollhouses, and architectural drawings. Enter a measurement and a ratio like 1:48 to convert it either way.
Square Yards Calculator
Square yards calculator for carpet and flooring pricing. Enter a room's length and width to see its area in both square yards and square feet.
Square Meters Calculator
Square meters calculator for metric area figures from feet. Enter length and width in feet to get your space in square meters and square feet.
Square Inches Calculator
Get a small rectangle's area in square inches and square feet from its length and width in inches. Useful for tile samples, small panels, and trim pieces.
Cubic Inches Calculator
Cubic inches calculator for small boxes, containers, and pieces of material. Enter the length, width, and height in inches for both volume units.
Cubic Meters Calculator
Cubic meters calculator that converts a length, width, and height in feet into a metric volume. Get the result in cubic meters and cubic feet at once.
Square Feet to Cubic Feet Calculator
Turn a known floor area into cubic feet by entering its depth in inches. You get a live result plus the conversion steps, shown in a worked example.
Square Feet to Cubic Yards Calculator
Convert a known area and depth into cubic yards for ordering mulch, gravel, or concrete. Live result in cubic yards and cubic feet, plus a worked example.
Cylinder Cubic Footage Calculator
Cylinder cubic footage calculator for planters, bins, silos, and round footing forms. Enter the diameter and height to get the volume in cubic feet.
Cylinder Cubic Yardage Calculator
Cylinder cubic yardage calculator for sonotube footings and piers. Enter the form diameter, depth, and count to get the concrete needed in cubic yards.
Perimeter Calculator
Perimeter calculator for fencing, edging, and trim. Enter a rectangle, circle, or triangle's dimensions to get the total distance around it in feet.
Firewood Calculator
Firewood calculator that turns a stack's dimensions and split length into cords and cubic feet, so you can compare a pile against a full cord.
Ladder Angle Calculator
Ladder angle calculator for extension ladders. Enter the working height to get the base distance, placement angle, and recommended ladder length.