Concrete Surface Area Calculator
Calculate the surface area of a slab, driveway, patio, or foundation. Concrete volume requires a separate depth calculation.
Precisionsräknare
Kalkylator för kvadratmeter för betong
Kalkylator för kvadratmeter för betong: Calculate surface area for concrete slabs, driveways, patios, and foundations. Cubic yards need a separate
Känt område
Rumsmått
Flera Rum
Rum (Fot + Tum)
ft
in
ft
in
Rektangel (Fot + Tum)
ft
in
ft
in
Vägg- och fönstermått
Domkyrkans väggmått
Square Dimensions
Rectangle Dimensions
Rektangelkant
Circle Dimensions
Circle Border (Annulus)
Annulus Dimensions
Triangle (3 Sides)
Triangle (Base & Height)
Trapets
Regelbunden Polygon
Yta + Djup (Volym)
MaterialavfallsfaktorFRIVILLIG
%
Beräkna materialkostnadFRIVILLIG
Calculation Results
Utforska våra kvadratfotkalkylatorer
Välj en specialiserad kalkylator för ditt exakta projekt – rum, former, material, utomhusytor och enhetsomvandlingar.
Rumskalkylator → Huskalkylator → Sovrums miniräknare → Badrumsräknare → Köksräknare → Multiple Rooms → Rektangelkalkylator → Triangelkalkylator → Cirkelräknare → Trapets kalkylator → Regular Polygon Calculator → Oregelbunden form → Odd Shape → Uneven Sides → Golvkalkylator → Kakelräknare → Färgkalkylator → Betongräknare → Isoleringsräknare → Gräsmatta kalkylator → Gårdsräknare → Landskapsarkitektur → Poolkalkylator → Garagekalkylator → Takräknare → Väggräknare → Feet & Inches → Inches miniräknare → Height Width Length → Sq Ft till Acres → Cubic Yards Calculator →
Hur det fungerar
1
Välj Form
Choose the shape that matches your space.
2
Ange dimensioner
Inmatningsmått i valfri enhet. Lägg till kvantitet, avfallsfaktor och materialpris.
3
Få resultat
Se området i ft², in², yd², m², acres plus kostnadsuppskattning – allt på en gång.
Vanliga frågor
How do I calculate square footage for a concrete project?
Measure length and width of the pour area and multiply for surface area in square feet. For how much concrete to order, you also need slab thickness (depth).
How do I convert square footage to cubic yards of concrete?
Multiply area (sq ft) by thickness in feet, then divide by 27 for cubic yards. Example: 200 sq ft × 0.33 ft (4 inches) = 66 cu ft ÷ 27 = 2.44 cubic yards.
How much concrete do I need for a standard 4-inch slab?
For 4-inch thickness, multiply sq ft by 0.0123 to get cubic yards. Example: 500 sq ft × 0.0123 = 6.15 cubic yards. Order 5 to 10% extra for waste, spillage, and uneven subgrade.
What waste factor should I use for concrete?
Add 5 to 10%. Use 5% on flat, well-prepared ground. Use 10% or more on uneven terrain, complex forms, or lots of edges. Running short mid-pour is worse than a little extra.
How do I estimate the cost of a concrete project?
Calculate area, add waste, then enter price per square foot in Estimate Material Cost. Ready-mix concrete often runs $100 to $150 per cubic yard delivered. For cost per sq ft, divide total cost by area.