Footing Calculator
A footing is a concrete base that supports walls, columns, or posts. Its volume is calculated by multiplying length, width, and depth. Accurate footing volumes prevent settlement and structural failure.
What Is Footing?
A footing is a structural concrete base that distributes building loads to the soil. Footing volume is length multiplied by width multiplied by depth. Accurate volume estimates ensure the footing can support the structure without settling or cracking.
Example
Formula: Length x Width x Depth = 10 m x 0.6 m x 0.3 m = 1.80 m³
Use any units for length, width, and depth, then the result will be in m³.
Tip: Choose your result unit on the right before calculating.
Step-by-step calculation
- Enter length, width, and depth with units.
- Select the result unit you want (m³).
- Calculate to see footing volume and steps in the selected unit.
How this is calculated
Footing concrete volume = length times width times depth per run, summed across all footings. Reinforcement length is estimated from the footing plan and converted to weight using rebar unit weights.
Sources: IS 456:2000; ACI 318 (Building Code Requirements for Structural Concrete).
FAQ
- How do I calculate footing volume by hand?
- Multiply length x width x depth. Example: 10 m x 0.6 m x 0.3 m = 1.8 m³.
- What is the formula for footing volume?
- Volume = Length x Width x Depth. All dimensions must be in the same unit.
- Strip footing vs pad footing
- Strip footings run under walls; pad footings sit under columns. Both use the same volume formula.
- What units should I use?
- Use meters for dimensions to get m³. Convert cm by dividing by 100.
- Can I use this for a column footing?
- Yes. Enter column base length, width, and depth for a pad footing.