- Volume Calculator
- Area Calculator
- Perimeter Calculator
- Surface Area Calculator
- Circle Calculator
- Rectangle Calculator
- Triangle Calculator
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Number of Tiles to Cover a Rectangle CalculatorCalculate how many rectangular tiles you need to cover a rectangular floor or wall, including a waste allowance for cuts and breakage.
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Triangle Altitude CalculatorCompute the three altitudes (heights) of a triangle from its side lengths using Heron's formula. Get h_a, h_b, h_c and the area instantly.
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Angle of Elevation CalculatorFind the angle of elevation from height and horizontal distance using arctan. Get the angle in degrees, radians, line-of-sight length and slope grade.
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Rectangle Fence Cost CalculatorEstimate the cost to fence a rectangular yard. Enter length, width, and price per foot to get the perimeter and total fencing material cost instantly.
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Rectangle Area in Acres CalculatorCalculate the area of a rectangular plot in acres from its length and width in feet. Instant feet-to-acres conversion using 1 acre = 43,560 sq ft.
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Diameter from Area CalculatorFind a circle's diameter from its area using d = 2√(A/π). Instantly get diameter, radius, and circumference from any area value.
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Rectangle Square Footage Cost CalculatorCalculate the total cost of a rectangular area by multiplying its square footage (length × width) by your price per square foot. Fast and free.
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Area from Circumference CalculatorFind the area of a circle from its circumference using A = C² / (4π). Also returns radius and diameter instantly. Free online geometry calculator.
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Circle Moment of Inertia (Area) CalculatorCalculate the area moment of inertia of a solid circle from its radius or diameter using I = πr⁴/4 = πd⁴/64. Free engineering tool.
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Partially Filled Circle Area CalculatorCalculate the filled cross-section area and fill percentage of a partially filled circle or cylindrical tank from radius and fill depth.
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Surface Area of a Cylinder CalculatorCalculate the total surface area of a cylinder from its radius and height using SA = 2πr² + 2πrh. See lateral and base areas instantly.
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Radius from Area of a Circle CalculatorFind the radius of a circle from its area using r = √(A/π). Instantly get radius, diameter, and circumference for any circle area.
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Interior Angle of a Regular Polygon CalculatorFind each interior angle of a regular polygon from the number of sides using (n−2)×180/n. Also shows exterior angle and the sum of interior angles.
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Room Perimeter Calculator for Baseboard & TrimCalculate the perimeter of a rectangular room and the linear feet of baseboard or trim you need, minus doorways and plus a waste allowance.
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Perimeter of an L-Shape CalculatorCalculate the perimeter of an L-shaped figure from its overall outer width and height using P = 2 × (a + b). Fast, free, and accurate.
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Roof Pitch Area Multiplier CalculatorCalculate actual roof surface area from footprint and pitch. Find the slope multiplier factor for any rise/run pitch like 6/12 or 12/12 instantly.
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Epoxy Resin Coverage CalculatorCalculate how much epoxy resin you need for any project. Enter length, width, and coating thickness to get volume in fluid ounces and gallons, with overage.
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Ceiling Area CalculatorCalculate ceiling area in square feet from length and width. Get square footage plus square meters and square yards for paint or tile estimates.
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Gravel Coverage Area CalculatorCalculate how much gravel you need for a project. Enter area, depth, and density to get volume in cubic feet, cubic yards, and tons.
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Fertilizer Coverage CalculatorCalculate how much fertilizer you need for any lawn or garden area using the application rate and product coverage. Fast, free, and accurate.
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Acres to Cents ConverterConvert acres to cents instantly with this Indian land unit converter. 1 acre = 100 cents. Fast, accurate area conversion for property and real estate.
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Cents to Square Feet ConverterConvert cents to square feet instantly. 1 cent = 435.6 ft². Free Indian land unit converter with square meters and acres output.
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Square Kilometers to Square Meters ConverterConvert square kilometers to square meters instantly. Enter km² to get m² using the exact factor 1 km² = 1,000,000 m². Fast and accurate.
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Square Yards to Square Feet ConverterConvert square yards to square feet instantly. Enter an area in yd² and get ft² using the exact factor 1 square yard = 9 square feet.
