Cubic Inches to Gallon (UK) Converter
Volume · unit-converter
Convert Cubic Inches to Gallon (UK) with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use liter-based factors (US fluid measures, imperial UK units, SI cubic meters).
Calculator
From: Cubic Inches (in3)
To: Gallon (UK) (ukgal)
About Cubic Inches
The cubic inch is the volume of a cube one inch on a side. Engine displacement in the US and small volumes in machining use cubic inches.
About Gallon (UK)
The UK imperial gallon is defined as approximately 4.54609 liters. It is larger than the US liquid gallon and is used for fuel and drinks labeling in the UK.
How to convert cubic inches to gallons (uk)
1 cubic inches is equal to 0.00360465014991 gallon (uk):
1 in3 = (0.016387064 L ÷ 4.54609 L) ukgal = 0.00360465014991 ukgal
Each cubic inches is defined as 0.016387064 L and each gallon (uk) as 4.54609 L, so one in3 equals 0.016387064 ÷ 4.54609 ukgal = 0.00360465014991 ukgal.
Let V(in3) be the numeric value of the same volume measured in Cubic Inches (in3), and V(ukgal) the value in Gallon (UK) (ukgal). Then:
V(ukgal) = V(in3) × (0.016387064 / 4.54609)
Equivalently, divide by how many in3 fit into one ukgal (liters per ukgal divided by liters per in3):
V(ukgal) = V(in3) ÷ 277.41943279162149
Or: gallon (uk) = cubic inches ÷ 277.41943279162149
Examples
Example #1: Convert 20 in3 to gallon (uk)
20 in3 = 20 in3 × (0.016387064/4.54609) ukgal = 0.072093003 ukgal
20 in3 = 20 in3 ÷ 277.41943279162149 = 0.072093003 ukgal
Example #2: Convert 50 in3 to gallon (uk)
50 in3 = 50 in3 × (0.016387064/4.54609) ukgal = 0.1802325075 ukgal
50 in3 = 50 in3 ÷ 277.41943279162149 = 0.1802325075 ukgal
Summary
To convert Cubic Inches to Gallon (UK), multiply the value in in3 by the ratio of liters per in3 divided by liters per ukgal. Equivalently: value_ukgal = value_in3 × (0.016387064 / 4.54609). Numerically, 1 in3 equals 0.0036046501499090423 ukgal.
Relationship context
You are converting between US customary fluid / volume (Cubic Inches) and UK imperial fluid / volume (Gallons (UK)). US and UK fluid measures differ (gallons, ounces, tablespoons); metric liters and cubic meters align with SI. The numeric factor used here is 3.604650e-3.
Conversion tables
| Cubic Inches (in3) | Gallon (UK) (ukgal) |
|---|---|
| 0.1 | 0.000360465 |
| 1 | 0.0036046501 |
| 2 | 0.0072093003 |
| 3 | 0.0108139504 |
| 4 | 0.0144186006 |
| 5 | 0.0180232507 |
| 6 | 0.0216279009 |
| 7 | 0.025232551 |
| 8 | 0.0288372012 |
| 9 | 0.0324418513 |
| Cubic Inches (in3) | Gallon (UK) (ukgal) |
|---|---|
| 10 | 0.0360465015 |
| 20 | 0.072093003 |
| 30 | 0.1081395045 |
| 40 | 0.144186006 |
| 50 | 0.1802325075 |
| 60 | 0.216279009 |
| 70 | 0.2523255105 |
| 80 | 0.288372012 |
| 90 | 0.3244185135 |
| 100 | 0.360465015 |