Volume Conversion
Liquid volume units
Required Parameters
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Quick Answer
1 US gallon = 3.785 liters. 1 liter = 1000 mL = 1000 cm³. 1 Imperial gallon = 4.546 liters (20% larger than US). For cubic volume: 1 m³ = 1000 liters.
Volume Conversion Calculator
Convert between volume units: liters, milliliters, gallons, quarts, fluid ounces, and cubic centimeters.
Key Conversions
- 1 gallon US = 3.785 liters
- 1 liter = 1000 mL = 1000 cm3
Design Notes
Volume measurements appear in electronics for conformal coating coverage (mL/cm²), flux dispensing (micro-liters), and cooling system capacity (liters). Solder paste volume per pad is critical for SMT quality.
Common Mistakes
- 1
Confusing US gallons (3.785 L) with Imperial gallons (4.546 L) — a 20% difference.
- 2
Mixing up fluid ounces (volume) with ounces (weight/mass).
- 3
Assuming cubic centimeters and milliliters are approximately equal — they are EXACTLY equal by definition.
Knowledge Base
How many liters in a US gallon?
1 US gallon = 3.78541 liters. 1 Imperial gallon = 4.54609 liters. The Imperial gallon is about 20% larger than the US gallon. Quick conversion: 1 US gallon ≈ 3.8 liters. 1 liter ≈ 0.264 US gallons.
What is the difference between US and Imperial gallons?
1 US gallon = 128 US fluid ounces = 3.785 L. 1 Imperial gallon = 160 Imperial fluid ounces = 4.546 L. The Imperial gallon is defined as the volume of 10 lbs of water at 62°F. This 20% difference causes significant confusion in fuel economy figures (US MPG vs UK MPG).
How many milliliters in a cup?
1 US cup = 236.588 mL. 1 metric cup = 250 mL. 1 Imperial cup = 284.131 mL. For cooking, most international recipes use the metric cup (250 mL). 1 US tablespoon = 14.79 mL. 1 US teaspoon = 4.93 mL.
How do I convert cubic centimeters to liters?
1 liter = 1000 cm³ (cc) exactly. 1 mL = 1 cm³ exactly. This is by definition. So a 2.0L car engine = 2000 cc. A 500 mL water bottle = 500 cm³. Cubic meters: 1 m³ = 1000 liters.
How do I convert cubic inches to liters?
1 cubic inch = 16.387 cm³ = 0.016387 liters. 1 liter = 61.024 cubic inches. Common in engine displacement: a 350 cubic inch engine = 350 × 16.387 = 5735 cm³ = 5.7 liters.
What is a fluid ounce?
US fluid ounce = 29.574 mL. Imperial fluid ounce = 28.413 mL. Despite having similar names, they differ by about 4%. 1 US fl oz is slightly larger than 1 Imperial fl oz. A standard US drink is 12 fl oz = 354.9 mL.
What volume units are used in laboratory science?
Microliters (µL): pipette volumes. Milliliters (mL): test tubes, beakers. Liters (L): large flasks, carboys. Cubic centimeters (cc or cm³): identical to mL, sometimes used in medical dosing. Lambda (λ): an obsolete unit equal to 1 µL, still seen in older literature.
How many quarts in a liter?
1 US quart = 0.946353 liters. 1 liter = 1.05669 US quarts. They are close to equal (within 6%). 1 US gallon = 4 quarts. 1 Imperial quart = 1.13652 liters (20% larger than US quart).
What is a barrel?
A US petroleum barrel = 42 US gallons = 158.987 liters. A US beer barrel = 31 US gallons = 117.3 liters. An Imperial barrel = 36 Imperial gallons = 163.7 liters. Oil prices are quoted per barrel (bbl). Daily global oil consumption: about 100 million barrels.
How do I measure solder paste volume in SMT?
Solder paste volume is calculated from stencil aperture area × stencil thickness. Typical stencil thickness: 100-150 µm (4-6 mils). Paste volume for a 0.5mm pitch QFP pad: about 0.03 mm³ = 0.00003 µL. Transfer efficiency (actual/theoretical) should be 80-120%.