Footing size calculator
Use our footing size calculator to calculate accurate size and measurement values instantly.
Calculator
Estimate minimum footing area from column load and allowable soil pressure.
Formula: Area = load / allowable bearing pressure
What each field means
- Service Load (kN): Enter a valid value for this field.
- Allowable Bearing (kPa): Enter a valid value for this field.
Minimum Footing Area (m2)
Your result will appear here.
About Footing size calculator
The Footing size calculator helps you estimate general size and measurement values quickly using consistent assumptions and practical calculation rules.
Formula Explanation
Area = load / allowable bearing pressure
Inputs You Need
- Required measurement values relevant to this calculator
- Unit selection: Service Load (kN), Allowable Bearing (kPa)
- Optional tolerance, safety, or scenario values if applicable
Step-by-Step Usage
- Enter your known values in the calculator fields.
- Select units and options that match your scenario.
- Click Calculate to generate your output.
- Copy, save, or share the result for later reference.
Example
Run the tool with realistic values from your use case and compare the output against expected ranges for general size and measurement calculations.
Method Sources
Frequently Asked Questions
Is this Footing size calculator accurate?
Yes, when correct inputs and units are provided.
Which units does this calculator support?
This tool is optimized for Service Load (kN), Allowable Bearing (kPa).
Can I use this calculator on mobile?
Yes, the form is optimized for touch inputs and smaller screens.