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Foundation Calculator

Calculate concrete and casting mix for your foundation based on dimensions

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๐Ÿ‡ฉ๐Ÿ‡ฐ All calculations are based on Danish rules, rates, and currency (DKK). This calculator is translated for convenience but applies exclusively to Denmark.

Calculate foundation

Our foundation calculator helps you determine the amount of concrete needed. The foundation is the base of any building and must be properly dimensioned.

Foundation types

Common types include strip foundation (under load-bearing walls), point foundation (for posts and columns) and slab foundation (entire building area). Depth must be below the frost line (90 cm in Denmark).

Dimensioning

A standard strip foundation for a house is typically 40 cm wide and 80 cm deep. For garages and carports, 30 cm width and 60 cm depth is often sufficient. Always consult an engineer for load-bearing structures.

Frequently Asked Questions

How deep should a foundation be in Denmark?

In Denmark, foundations must go below the frost line at 90 cm. This means a depth of at least 90 cm from ground level. In practice, 80-100 cm depth is common. Check local requirements with your municipality.

Should the foundation be reinforced?

Yes, foundations should be reinforced with rebar to increase resistance to bending and cracking. Typically 2-4 bars รธ10-12 mm are used at the bottom. Consult an engineer for correct dimensioning.

How much does a foundation cost?

Foundation cost depends on type and size. A strip foundation for a house typically costs 50,000-100,000 DKK including excavation, reinforcement and concrete. A single post foundation costs about 500-1,500 DKK. DIY with casting mix costs about 150-200 DKK per mยฒ.

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