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Porosity Formula

GoPorosity given Specific Yield and Specific Retention Formula

GoPorosity given Bulk Pore Velocity Formula

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Porosity of Soil is the ratio of the volume of voids to the total volume of the soil. Porosity is a crucial parameter in hydrology as it influences the movement and storage of water within the soil. Check FAQs

η = \frac{V t - V s}{V t}

η - Porosity of Soil?V_t - Total Volume of Soil or Rock Sample?V_s - Volume of Solids?

Porosity Example

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Here is how the Porosity equation looks like with Values.

Here is how the Porosity equation looks like with Units.

Here is how the Porosity equation looks like.

0.3213 = \frac{22.1 - 15}{22.1}

0.3213 = \frac{22.1m³ - 15m³}{22.1m³}

0.3213 = \frac{22.1 - 15}{22.1}

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Porosity Solution

Follow our step by step solution on how to calculate Porosity?

FIRST Step Consider the formula

η = \frac{V t - V s}{V t}

Next Step Substitute values of Variables

∴

η = \frac{22.1m³ - 15m³}{22.1m³}

Next Step Prepare to Evaluate

∴

η = \frac{22.1 - 15}{22.1}

Next Step Evaluate

∴

η = 0.321266968325792

LAST Step Rounding Answer

∴

η = 0.3213

Porosity Formula Elements

Variables

Porosity of Soil

Porosity of Soil is the ratio of the volume of voids to the total volume of the soil. Porosity is a crucial parameter in hydrology as it influences the movement and storage of water within the soil.

Symbol: η

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Porosity of Soil

Total Volume of Soil or Rock Sample

Total Volume of Soil or Rock Sample is the combined volume of solids and pores which may contain volume of air or volume of water, or both.

Symbol: V_t

Measurement: VolumeUnit: m³

Note: Value can be positive or negative.

Formulas to find Total Volume of Soil or Rock Sample

Volume of Solids

Volume of Solids is the total volume of sediment or particulate matter present in a body of water, such as rivers, lakes, or reservoirs.

Symbol: V_s

Measurement: VolumeUnit: m³

Note: Value can be positive or negative.

Formulas to find Volume of Solids

Other Formulas to find Porosity of Soil

Go Porosity given Specific Yield and Specific Retention

η = S y + S r

Go Porosity given Bulk Pore Velocity

η = \frac{V}{V a}

Other formulas in Porosity category

Go Total Volume of Soil or Rock Sample given Porosity

V t = (\frac{V v}{η v}) \cdot 100

Go Volume of Solids given Porosity

V s = (V t \cdot (1 - η))

How to Evaluate Porosity?

Porosity evaluator uses Porosity of Soil = (Total Volume of Soil or Rock Sample-Volume of Solids)/Total Volume of Soil or Rock Sample to evaluate the Porosity of Soil, The Porosity formula is defined as the volume of voids in a material divided by the total volume of the material. Porosity plays a crucial role in groundwater hydrology by determining how much water a rock or soil can hold and how easily water can flow through it. Higher porosity generally means greater potential for water storage and movement. Porosity of Soil is denoted by η symbol.

How to evaluate Porosity using this online evaluator? To use this online evaluator for Porosity, enter Total Volume of Soil or Rock Sample (V_t) & Volume of Solids (V_s) and hit the calculate button.

FAQs on Porosity

What is the formula to find Porosity?

The formula of Porosity is expressed as Porosity of Soil = (Total Volume of Soil or Rock Sample-Volume of Solids)/Total Volume of Soil or Rock Sample. Here is an example- 0.90625 = (22.1-15)/22.1.

How to calculate Porosity?

With Total Volume of Soil or Rock Sample (V_t) & Volume of Solids (V_s) we can find Porosity using the formula - Porosity of Soil = (Total Volume of Soil or Rock Sample-Volume of Solids)/Total Volume of Soil or Rock Sample.

What are the other ways to Calculate Porosity of Soil?

Here are the different ways to Calculate Porosity of Soil-

Porosity of Soil=Specific Yield+Specific Retention
Porosity of Soil=Apparent Velocity of Seepage/Bulk Pore Velocity

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