To determine this, we have to go back to the basics of geometry to measure area and volume. However, a few measurements will always remain the same. Therefore, an “inch of water” is 0.62 gallons per square foot of garden area.

### Volume of Pipe Formula

The pipe volume formula is:

**Volume = pi** x** radius² **x **length**

To do piping size calculation, follow these steps:

- Find the inner diameter and length of the pipe, in inches or millimeters.
- Calculate the inner diameter of the pipe by measuring the distance from one inside edge, across the center, and to the opposite inside edge.
- Use the same units (inches or millimeters) to measure the length of pipe.
- Calculate the radius of the pipe through its diameter. To get the radius, divide the diameter by 2.
- Take the radius and square it, or multiply it by itself. For instance, 5² = 25.

### Volume of Pipe Calculator in Gallons

If you need to know water capacity in gallons, you’ll need to convert the water volume in the pipe calculator metric to cubic inches.

- A cubic inch = 1 inch x 1 inch x 1 inch.
- An inch = a measurement of length.
- A square inch = a measurement of area.
- A cubic inch = a measurement of volume.
- There are 231 cubic inches in 1 U.S. gallon.
- Density of water = 997 kg/m³

Let ServiceTitan’s water pipe volume calculator take the guesswork out of the equation when trying to determine the volume of water in pipes measured in gallons. For common pipe dimensions, contractors can also refer to a general pipe volume chart online.

### How To Calculate Water Volume: An Easy Explanation

### FAQ

**What is the volume of 1 inch of water?**

**How many gallons is 1 inch of watering?**

**Is 1 inch of water a lot?**

**What is an inch of water?**

Thinking about water in inches can feel very confusing because an inch will look different for every container. An inch of water in a glass is quite different from an inch of water in a flowerpot or on a field. But for gardeners and farmers, inches of water is a standard industry measurement that you need to understand.

**How much water should I drink?**

Around 35 to 40 ml of water per kilogram of body weight. For example, a 62 kg individual should ingest between 2,170 liters to 2,480 liters daily. Another way to monitor whether water consumption is adequate is through urine staining. The clearer the better! It means that water consumption is appropriate. The opposite is also true, when you drink little water, the urine becomes more concentrated, more yellow, and has a stronger odour.

**What is water volume?**

Water Volume: The water volume represents the total amount of water that can be contained in a given container or space. It is typically measured in units such as liters or gallons. Length, Width, Height: These dimensions are required for calculating the volume of a rectangular container.

**How many gallons in an inch of water?**

The volume of an inch of water depends on the area it’s applied to. Multiplying the length and the width of the area you want to water and dividing the result by 231 will give you the number of gallons needed. How does this conversion work, and why is water measured in inches anyway?