Volume Units Converter
Reference data and engineering information about volume units converter for basics applications.
Overview
Volume unit conversion is a fundamental task in engineering, manufacturing, and fluid handling. The SI unit of volume is the cubic metre (m³), but many industries use litres, gallons, barrels, or cubic feet depending on region and application. This page provides conversion factors between the most common metric and imperial volume units.
The source page introduces this as an online calculator for converting between common volume units. It also provides printable converter images and related Engineering ToolBox mobile app references; those sections are preserved below with the complete conversion tables.
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Volume Units Online Calculator
Selectable Volume Unit Converter
Use the multiply-by factor from the tables below to convert between any two units. To convert a value from the row unit to the column unit, multiply by the factor shown.
Other Volume Units
The source tables include common metric units, cubic inch, cubic foot, cubic yard, US liquid gallon, US dry gallon, Imperial gallon, oil barrel, cup, UK and US fluid ounces, and UK pint. These are all retained in the restored conversion tables below.
Metric Volume Conversions
All factors convert from the row unit to the column unit.
From Unit | m³ | dm³ (L) | cm³ (mL) | mm³ | hectolitres | centilitres |
|---|---|---|---|---|---|---|
| cubic metre (m³) | 1 | 1000 | 1000000 | 1000000000 | 10 | 100000 |
| litre (dm³) | 0.001 | 1 | 1000 | 1000000 | 0.01 | 100 |
| millilitre (cm³) | 0.000001 | 0.001 | 1 | 1000 | 0.00001 | 0.1 |
| cubic millimetre | 1e-9 | 0.000001 | 0.001 | 1 | 1e-8 | 0.0001 |
| hectolitre | 0.1 | 100 | 100000 | 100000000 | 1 | 10000 |
| centilitre | 0.00001 | 0.01 | 10 | 10000 | 0.0001 | 1 |
Source: engineeringtoolbox.com
Imperial and US Volume Conversions
From Unit | cubic inches | cubic feet | US liq gal | Imp gal | litres | barrels (oil) |
|---|---|---|---|---|---|---|
| cubic inch | 1 | 0.0005787 | 0.004329 | 0.003605 | 0.01639 | 0.0001031 |
| cubic foot | 1728 | 1 | 7.481 | 6.229 | 28.317 | 0.1781 |
| cubic yard | 46656 | 27 | 201.97 | 168.18 | 764.55 | 4.808 |
| US liquid gallon | 231 | 0.1337 | 1 | 0.8327 | 3.785 | 0.02381 |
| US dry gallon | 268.8 | 0.1556 | 1.1636 | 0.9689 | 4.405 | 0.0277 |
| Imperial gallon | 277.4 | 0.1605 | 1.201 | 1 | 4.546 | 0.02859 |
| barrel (oil, 42 gal) | 9702 | 5.615 | 42 | 34.97 | 158.99 | 1 |
| litre | 61.024 | 0.03531 | 0.2642 | 0.22 | 1 | 0.00629 |
Source: engineeringtoolbox.com
Metric ↔ Imperial Quick Reference
Relationship | Value |
|---|---|
| 1 cubic metre | 35.31 ft³ / 264.2 US gal / 6.29 barrels |
| 1 litre | 0.03531 ft³ / 0.2642 US gal / 61.02 in³ |
| 1 US gallon | 3.785 L / 0.1337 ft³ / 231 in³ |
| 1 Imperial gallon | 4.546 L / 1.201 US gal / 277.4 in³ |
| 1 cubic foot | 28.32 L / 7.481 US gal / 1728 in³ |
| 1 barrel (oil) | 159.0 L / 42 US gal / 5.615 ft³ |
| 1 cubic inch | 16.39 mL / 0.5541 US fl oz |
| 1 cup (US) | 236.6 mL / 8 US fl oz |
| 1 US fl ounce | 29.57 mL |
| 1 UK fl ounce | 28.41 mL |
Source: engineeringtoolbox.com
Common Volume Units as Litres
U.S. Gallons to Litres
Key Formulas
General Conversion
Where F is the conversion factor from the source unit to the target unit (taken from the tables above).
Cylinder Volume
Used frequently in pipe and vessel sizing, where d is internal diameter and L is length.
Sphere Volume
Variables
| Symbol | Description | SI Unit |
|---|---|---|
| V | Volume | m³ |
| F | Conversion factor | — |
| d | Diameter | m |
| L | Length | m |
Restored Original Source Tables
The following tables are restored from the original source page to preserve the complete reference data.
Volume Units Converter
cubic inches | cubic feet | cubic yards | us liquid gallons | us dry gallons | imp liquid gallons | barrels (oil) | cups | fluid ounces (UK) | fluid ounces (US) | pints (UK) | Multiply by |
|---|---|---|---|---|---|---|---|---|---|---|---|
| cubic metre | 6.1×104 | 35.3 | 1.308 | 264.2 | 227 | 220 | 6.29 | 4227 | 3.52×104 | 3.38×104 | 1760 |
| cubic decimetre | 61.02 | 0.035 | 1.3×10-3 | 0.264 | 0.227 | 0.22 | 0.006 | 4.23 | 35.2 | 33.8 | 1.76 |
| cubic centimetre | 0.061 | 3.5×10-5 | 1.3×10-6 | 2.64×10-4 | 2.27×10-4 | 2.2×10-4 | 6.29×10-6 | 4.2×10-3 | 3.5×10-2 | 3.34×10-2 | 1.76×10-3 |
| cubic millimetre | 6.1×10-5 | 3.5×10-8 | 1.31×10-9 | 2.64×10-7 | 2.27×10-7 | 2.2×10-7 | 6.3×10-9 | 4.2×10-6 | 3.5×10-5 | 3.4×10-5 | 1.76×10-6 |
| hectoliters | 6.1×103 | 3.53 | 0.13 | 26.4 | 22.7 | 22 | 0.63 | 423 | 3.5×103 | 3381 | 176 |
| liters | 61 | 3.5×10-2 | 1.3×10-3 | 0.26 | 0.23 | 0.22 | 6.3×10-3 | 4.2 | 35.2 | 33.8 | 1.76 |
| centiliters | 0.61 | 3.5×10-4 | 1.3×10-5 | 2.6×10-3 | 2.3×10-3 | 2.2×10-3 | 6.3×10-5 | 4.2×10-2 | 0.35 | 0.338 | 1.76×10-2 |
| milliliters | 6.1×10-2 | 3.5×10-5 | 1.3×10-6 | 2.6×10-4 | 2.3×10-4 | 2.2×10-4 | 6.3×10-6 | 4.2×10-3 | 3.5×10-2 | 3.4×10-2 | 1.76×10-3 |
| cubic inches | 1 | 5.79×10-4 | 2.1×10-5 | 4.3×10-3 | 3.7×10-3 | 3.6×10-3 | 10-4 | 6.9×10-2 | 0.58 | 0.55 | 2.9×10-2 |
| cubic feet | 1728 | 1 | 0.037 | 7.48 | 6.43 | 6.23 | 0.18 | 119.7 | 997 | 958 | 49.8 |
| cubic yards | 4.7×104 | 27 | 1 | 202 | 173.6 | 168.2 | 4.8 | 3232 | 2.69×104 | 2.59×104 | 1345 |
| us liquid gallons | 231 | 0.134 | 4.95×10-3 | 1 | 0.86 | 0.83 | 0.024 | 16 | 133.2 | 128 | 6.7 |
| us dry gallons | 268.8 | 0.156 | 5.76×10-3 | 1.16 | 1 | 0.97 | 0.028 | 18.62 | 155 | 148.9 | 7.75 |
| imp liquid gallons | 277.4 | 0.16 | 5.9×10-3 | 1.2 | 1.03 | 1 | 0.029 | 19.2 | 160 | 153.7 | 8 |
| barrels (oil) | 9702 | 5.61 | 0.21 | 42 | 36.1 | 35 | 1 | 672 | 5596 | 5376 | 279.8 |
| cups | 14.4 | 8.4×10-3 | 3.1×10-4 | 6.2×10-2 | 5.4×10-2 | 5.2×10-2 | 1.5×10-3 | 1 | 8.3 | 8 | 0.4 |
| fluid ounces (UK) | 1.73 | 10-3 | 3.7×10-5 | 7.5×10-3 | 6.45×10-3 | 6.25×10-3 | 1.79×10-4 | 0.12 | 1 | 0.96 | 5×10-2 |
| fluid ounces (US) | 1.8 | 10-3 | 3.87×10-5 | 7.8×10-3 | 6.7×10-3 | 6.5×10-3 | 1.89×10-4 | 0.13 | 1.04 | 1 | 0.052 |
| pints (UK) | 34.7 | 0.02 | 7.4×10-4 | 0.15 | 0.129 | 0.125 | 3.57×10-3 | 2.4 | 20 | 19.2 | 1 |
Source: engineeringtoolbox.com
Volume Units Converter
cubic metre | cubic decimetre | cubic centimetre | cubic millimetre | hectoliters | liters | centiliters | milliliters | Multiply by |
|---|---|---|---|---|---|---|---|---|
| cubic meters | 1 | 103 | 106 | 109 | 10 | 103 | 105 | 106 |
| cubic decimeters | 10-3 | 1 | 103 | 106 | 0.01 | 1 | 100 | 103 |
| cubic centimeters | 10-6 | 10-3 | 1 | 103 | 10-5 | 10-3 | 0.1 | 1 |
| cubic millimeters | 10-9 | 10-6 | 10-3 | 1 | 10-8 | 10-6 | 10-4 | 10-3 |
| hectoliters | 0.1 | 102 | 105 | 108 | 1 | 102 | 104 | 105 |
| liters | 10-3 | 1 | 103 | 106 | 10-2 | 1 | 102 | 103 |
| centiliters | 10-5 | 10-2 | 10 | 104 | 10-4 | 10-2 | 1 | 10 |
| milliliters | 10-6 | 10-3 | 1 | 103 | 10-5 | 10-3 | 0.1 | 1 |
| cubic inches | 1.6×10-5 | 1.6×10-2 | 16.4 | 1.64×104 | 1.64×10-4 | 1.64×10-2 | 1.64 | 16.4 |
| cubic feet | 2.8×10-2 | 28.3 | 2.83×104 | 2.83×107 | 0.28 | 28.3 | 2.83×103 | 2.83×104 |
| cubic yards | 0.765 | 765 | 7.65×105 | 7.65×108 | 7.65 | 765 | 7.65×104 | 7.65×105 |
| us liquid gallons | 3.79×10-3 | 3.79 | 3.79×103 | 3.79×106 | 3.79×10-2 | 3.79 | 379 | 3.79×103 |
| us dry gallons | 4.4×10-3 | 4.4 | 4.4×103 | 4.4×106 | 4.4×10-2 | 4.4 | 440 | 4.4×103 |
| imp liquid gallons | 4.55×10-3 | 4.55 | 4.55×103 | 4.55×106 | 4.56×10-2 | 4.55 | 455 | 4.55×103 |
| barrels (oil) | 0.16 | 159 | 1.59×105 | 1.59×108 | 1.59 | 159 | 1.59×104 | 1.59×105 |
| cups | 2.4×10-4 | 0.24 | 236.6 | 2.37×105 | 2.37×10-3 | 0.236 | 23.7 | 236.6 |
| fluid ounces (UK) | 2.8×10-5 | 2.8×10-2 | 28.4 | 2.8×104 | 2.8×10-4 | 2.8×10-2 | 2.84 | 28.4 |
| fluid ounces (US) | 2.96×10-5 | 2.96×10-2 | 29.6 | 2.96×104 | 2.96×10-4 | 2.96×10-2 | 2.96 | 29.6 |
| pints (UK) | 5.68×10-4 | 0.568 | 568 | 5.68×105 | 5.68×10-3 | 0.568 | 56.8 | 568 |
Source: engineeringtoolbox.com
Original Source Images
The following original source images are preserved to avoid losing visual reference material. When an image contains chart or tabular data, its extracted values are represented in the page tables, calculators, or interactive charts; remaining images are retained as visual source references.
Download and print U.S. gallon to liter Converter!
Related Mobile Apps from The Engineering ToolBox
The original source includes a related mobile apps section for Engineering ToolBox calculators and converters. The web equivalent is represented here by the online calculator, complete source conversion tables, and preserved printable converter images.
Engineering Notes
- US vs Imperial gallons — The US liquid gallon (3.785 L) is approximately 17% smaller than the Imperial gallon (4.546 L). Always specify which system is intended in documents and procurement.
- Oil barrel — A standard oil barrel is 42 US gallons (158.99 L), not to be confused with other barrel definitions used in brewing or dry goods.
- Metric prefixes — The metric system uses powers of 10 (centi-, milli-, etc.), making internal conversions straightforward. One litre equals exactly 1 dm³ and 1000 cm³ by definition.
- Temperature dependence — Liquid volumes vary slightly with temperature. Precise metrology uses reference temperatures (e.g., 15 °C or 60 °F) when calibrating volumetric equipment.
- Precision — When converting between imperial units and metric, carry sufficient significant figures to avoid rounding errors in multi-step calculations.