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Both calculators run independently — change the inputs on either side to compare results.

Soil Bearing Capacity Calculator

Estimate the ultimate bearing capacity of soil beneath a square footing using Terzaghi's general bearing-capacity equation. Foundational geotechnical design input — used with appropriate safety factors to determine maximum allowable footing loads.

Soil Cohesion (kPa)

Internal Friction Angle (degrees)

Foundation Depth (m)

Soil Unit Weight (kN/m³)

Civil

Excavation Volume Calculator

Calculate the volume of earth to be removed for a rectangular excavation — foundation pit, trench, or basement cut. Output is the in-situ (bank) volume in cubic metres, used for haulage planning, disposal cost estimation, and equipment sizing.

Excavation Length (m)

Excavation Width (m)

Excavation Depth (m)

Key differences

	Soil Bearing Capacity Calculator	Excavation Volume Calculator
Category	Civil	Civil
Inputs required	4	3
Result	Ultimate Bearing Capacity (kPa)	Excavation Volume (m³)
What it does	Estimate the ultimate bearing capacity of soil beneath a square footing using Terzaghi's general bearing-capacity equation. Foundational geotechnical design input — used with appropriate safety factors to determine maximum allowable footing loads.	Calculate the volume of earth to be removed for a rectangular excavation — foundation pit, trench, or basement cut. Output is the in-situ (bank) volume in cubic metres, used for haulage planning, disposal cost estimation, and equipment sizing.