Area of a quadrilateral Calculator

Calculates the area and perimeter of a quadrilateral given four sides and two opposite angles.

Area of a quadrilateral
side a
side b
side c
side d
sum of angles θ12

area S
    1.  
perimeter L
    1.  
    Area of a quadrilateral
    [1-10] /421Disp-Num
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    [1]  2022/08/19 05:40   60 years old level or over / A retired person / Useful /
    Purpose of use
    Calculate irregular lot size accurately for sales and marketing records
    [2]  2022/07/26 00:54   60 years old level or over / A retired person / Very /
    Purpose of use
    Needed to calculate area for re-sod.
    Comment/Request
    Qaudrilateral is tricky and needed sq footage to order material, yard waste, and labor. Great tool! Thanks!
    [3]  2022/06/08 20:47   50 years old level / A retired person / Very /
    Purpose of use
    Used to calculate a patio area and lawn area in our back garden.
    Comment/Request
    Excellent tool. Thank you.
    [4]  2022/06/08 08:49   60 years old level or over / Self-employed people / Useful /
    Purpose of use
    Land area calculation
    Comment/Request
    Providing the answer in acreage would be helpful.
    [5]  2022/05/25 07:22   40 years old level / An office worker / A public employee / Very /
    Purpose of use
    Using it to calculate the area of a property based on perimeter measurements, then convert to acres.
    [6]  2022/04/27 14:00   40 years old level / An engineer / Very /
    Purpose of use
    Calculate turf in front yard. Excellent. For triangular plots, use a very small dimension for one side.
    [7]  2022/04/08 07:05   50 years old level / Self-employed people / Very /
    Purpose of use
    working out the area of small front garden to be turfed
    Comment/Request
    thankyou
    [8]  2022/03/23 06:00   20 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    college homework
    [9]  2022/02/24 03:36   60 years old level or over / Others / Very /
    Purpose of use
    I'm a real estate agent looking for lots for a client.
    Comment/Request
    This is a perfect site. This is an easy division problem, but it would be super-cool if you added the number of acres or fraction of an acre in the calculations. Thanks so much for this easy-to-use app.
    [10]  2022/01/22 04:50   40 years old level / An engineer / Very /
    Purpose of use
    Measuring of aluminium sheet

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