Gallons Per Cubic Inch Calculator

Conversion Formula:

\[ \text{Gallons per in}³ = \frac{1}{231} \]

Gallons:

Gallons per Cubic Inch:

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1. What is Gallons Per Cubic Inch?

Gallons per cubic inch (gal/in³) is a unit conversion factor that relates volume in cubic inches to volume in gallons. It's particularly useful in engineering and fluid dynamics calculations.

2. How Does the Conversion Work?

The conversion is based on the exact definition:

\[ 1 \text{ gallon} = 231 \text{ cubic inches} \]

Therefore:

To convert cubic inches to gallons: divide by 231
Gallons per cubic inch is the reciprocal: 1/231

Explanation: This conversion factor is exact and used in US customary units for liquid volume measurements.

3. Practical Applications

Details: This conversion is essential in industries like automotive (engine displacement), plumbing, and any field dealing with liquid volumes in different units.

4. Using the Calculator

Tips: Enter any positive value in cubic inches to get the equivalent in gallons and the conversion rate. The cylinder volume is irrelevant to the conversion factor itself.

5. Frequently Asked Questions (FAQ)

Q1: Why is 1 gallon equal to 231 cubic inches?
A: This definition dates back to British wine gallons and became standard in US customary units for liquid measure.

Q2: Does this apply to both US and UK gallons?
A: No, this conversion is specific to US liquid gallons. UK gallons are different (1 UK gallon ≈ 277.42 cubic inches).

Q3: Is this conversion rate exact?
A: Yes, the 1:231 relationship is an exact definition in US customary units.

Q4: Can I use this for any shape container?
A: Yes, the conversion factor applies regardless of container shape since it's purely a unit conversion.

Q5: How precise is this calculator?
A: It provides results to 6 decimal places, though practical applications often use fewer digits.