Geometry

  • Square Yards to Square Meters Converter
    Convert square yards to square meters instantly. Enter any area in yd² and get the exact result in m² using the factor 0.83612736.
  • Square Meters to Square Centimeters Converter
    Convert square meters (m²) to square centimeters (cm²) instantly. Multiply by 10,000 to get cm². Fast, accurate area unit conversion.
  • Square Kilometers to Square Meters Converter
    Convert square kilometers to square meters instantly. Enter km² to get m² using the exact factor 1 km² = 1,000,000 m². Fast and accurate.
  • Cylinder Lateral Surface Area Calculator
    Calculate the lateral (curved) surface area of an open cylinder using A = 2πrh. Enter radius and height for instant results in square units.
  • Dilution Volume Calculator
    Calculate the stock volume needed for a dilution using C1V1 = C2V2. Enter stock and final concentrations plus final volume to get V1 and solvent.
  • Density Calculator (Mass and Volume)
    Calculate density from mass and volume with ρ = m/V. Supports grams, kilograms, cm³, mL, liters and m³. Get results in g/cm³ and kg/m³ instantly.
  • Cubic Meters to Liters Calculator
    Convert cubic meters (m³) to liters (L) instantly. Enter any volume and get the exact result using L = m³ × 1000. Fast, free and accurate.
  • Cups to Grams Calculator
    Convert cups to grams for any ingredient using density. Pick flour, sugar, butter, water and more, or enter a custom g/mL value. Free and instant.
  • Milliliters to Grams Calculator
    Convert milliliters (mL) to grams (g) using density. Enter volume and density or pick a preset (water, milk, oil, flour, sugar, honey) for instant results.
  • Cubic Feet to Gallons Calculator
    Convert cubic feet (ft³) to US liquid gallons instantly. Enter a volume in cubic feet and get the equivalent gallons using gal = ft³ × 7.48052.
  • Cubic Inches to Gallons Calculator
    Convert cubic inches (in³) to US liquid gallons instantly. Enter a volume and get gallons using the exact factor: 1 gallon = 231 in³.
  • Liters to Cubic Meters Calculator
    Convert liters to cubic meters instantly. Enter a volume in L and get the exact m³ value using the formula m³ = L ÷ 1000.
  • Surface Area of a Cylinder Calculator
    Calculate the total surface area of a cylinder from its radius and height using SA = 2πr² + 2πrh. See lateral and base areas instantly.
  • Radius from Area of a Circle Calculator
    Find the radius of a circle from its area using r = √(A/π). Instantly get radius, diameter, and circumference for any circle area.
  • Area of a Hexagon Calculator
    Calculate the area of a regular hexagon from its side length using A = (3√3/2)s². Free, instant, with perimeter included and worked examples.
  • Sector Area Calculator (Degrees)
    Calculate the area of a circle sector from the radius and central angle in degrees. Free, instant, with arc length too. Formula A = (θ/360)·π·r².
  • Interior Angle of a Regular Polygon Calculator
    Find 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.
  • Triangle Altitude Calculator
    Compute 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.
  • Pool Water Volume Calculator
    Calculate swimming pool water volume in gallons and liters from length, width, and average depth in feet or meters. Fast, accurate, and free.
  • Right Triangle from Perimeter and Area Calculator
    Calculate the height of an equilateral triangle from its side length using h = (√3/2)·a. Also returns area and perimeter instantly.
  • Angle of Elevation Calculator
    Find the angle of elevation from height and horizontal distance using arctan. Get the angle in degrees, radians, line-of-sight length and slope grade.
  • Number of Tiles to Cover a Rectangle Calculator
    Calculate how many rectangular tiles you need to cover a rectangular floor or wall, including a waste allowance for cuts and breakage.
  • Rectangle Fence Cost Calculator
    Estimate the cost to fence a rectangular yard. Enter length, width, and price per foot to get the perimeter and total fencing material cost instantly.
  • Rectangle Area in Acres Calculator
    Calculate 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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