Soil Bearing Capacity Calculator

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Expert Reviewed

|David Thompson, PMP, LEED AP|Updated January 22, 2026Our Standards →

Last updated: March 4, 2026

Soil Bearing Capacity Calculator

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Estimate soil bearing capacity for different soil types and moisture levels. Includes safety factor and maximum safe load calculation. Free geotechnical calculator.

Unit System:

Soil Type

Moisture Level

Safety Factor *

Range: 1.5-5.0 (typical 2.0-3.0)

Footing Width (m) - Optional

Enter to calculate maximum safe load

Footing Length (m) - Optional

Enter to calculate maximum safe load

Results

Bearing Capacity

Base Capacity

150.00 kN/m²

Sand (moist)

Allowable Capacity

60.00 kN/m²

Safety factor: 2.5

Warnings

This is a BASIC ESTIMATOR only. Actual bearing capacity MUST be determined through professional soil testing and geotechnical analysis.
Always consult a qualified geotechnical engineer before construction.

Capacity Breakdown

Soil Type

Sand

Moisture Level

Moist

Base Capacity

150.00 kN/m²

Safety Factor

2.5

Soil Type Comparison

Base capacity (moist)

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📚 In-Depth Guide

This calculator is part of a comprehensive guide

Construction Calculators 2026: Complete Guide to Concrete, Steel, Masonry, Tiles, Paint & Structural Design

Full Guide

Master construction estimating with 12+ free calculators: concrete quantity (m³ to bags), rebar weight (kg/m), brick counts, tile quantities, paint coverage, drywall sheets, excavation volumes, soil bearing capacity, RCC beam design, staircase sizing, and retaining wall stability. Aligned with ACI 318, IS 456, and IBC 2024.

View all guides →

Soil Bearing Capacity Calculator -- Geotech Basics

Estimate allowable pressure and safe foundation load with conservative safety factors for conceptual design.

Allowable SBC

qa = qult / FS

Safe load

P = qa x footing area

Footing area

A = L x B

Settlement check

serviceability governs in soft soils