The BN Products Rebar Calculator is a powerful online calculator to estimate rebar, concrete and forms materials needed for your rebar project.  This calculator is brought to you for free from BN Products - USA which has been bringing you professional grade tools since 1925.  This calculator suite includes over 100 specific calculator functions and data pages.

Top Rebar Calculators

• Rebar and Concrete in a Slab: Computes the total length and weight of rebar and the volume and weight of concrete needed for a slab.  This takes into account rebar lapping and the concrete displaced by the rebar.
• Length of Rebar in Grid: Computes the total length of rebar needed for one or more mats of rebar in a rectangle concrete slab, and accounts for rebar lapping. Available in English and Spanish languages.
• Weight of Rebar in Grid: Computes the total weight of rebar needed for a concrete slab based on the dimensions of the slab and the spacing and size of the rebar. Available in English and Spanish languages.
• Concrete, Rebar and Forms for a Wall: Computes the length or weight of rebar, the volume of concrete, or the surface area of forms for a concrete wall. 
• Rebar in Irregular Shaped Slab: Estimates the length and weight of rebar needed for an irregular shaped slab.  
• Rebar in Circular Slab: Computes the length and weight of rebar in a circular slab. 
• Rebar Lapping Length: Computes the length overlap needed at a rebar joint based on the lapping factor and rebar size.

All calculator are found in two main categories: REBAR and MASONRY

• Rebar Calculator: Computes the amount of rebar (length, weight and lapping) for rectangle, circular and irregular slabs and walls.  Available in English and Spanish.
• Foundations Footers and Piers Calculator: Computes the number of block and/or concreted needed for footers, piers, foundation walls, and posts.
• Concrete Slab Calculator: Computes the amount rebar and concrete for a rectangular, polygons, circular or semi-circular slab.
• Masonry Wall Calculator: Computes the number of brick and block for a house (building), foundation or wall including the amount of concrete needed for mortar joints.  It also includes calculators for the amount of materials needed for concrete forms.