🧊 ml to gal — Milliliter to US Gallon Converter

Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.

1 unit =
From
To
Formula 1 mL = 0.00026417218 gal
UnitNameValue
0.001 ml2.64172e-07 gal
0.01 ml2.64172e-06 gal
0.1 ml2.64172e-05 gal
1 ml0.000264172 gal
5 ml0.00132086 gal
10 ml0.00264172 gal
50 ml0.0132086 gal
100 ml0.0264172 gal
1000 ml0.264172 gal
Last updated: March 2026

Milliliter to US Gallon Conversion Table

Common milliliter values converted to us gallon — factor: 1 mL = 0.0002642 gal

Milliliter (mL)US Gallon (gal)Context
1 mL0.0002642 galEyedrop
5 mL0.001321 galTeaspoon
10 mL0.002642 galTablespoon
15 mL0.003963 galTablespoon
30 mL0.007925 galShot glass
60 mL0.01585 galDouble shot
100 mL0.02642 galHalf cup
150 mL0.03963 galHalf cup
240 mL0.0634 galOne cup
355 mL0.09378 galSoda can
500 mL0.1321 galWater bottle
750 mL0.1981 galWine bottle
1,000 mL0.2642 galOne liter
1,500 mL0.3963 galLarge bottle
3,785 mL0.9999 galOne gallon

About Milliliter to US Gallon Conversion

Converting milliliter to us gallon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using us gallon, or a laboratory protocol may specify volumes in milliliter that need to be measured with equipment calibrated in us gallon.

In everyday use, knowing that 5 mL = 0.001321 gal and 10 mL = 0.002642 gal covers most common situations. For bulk calculations, 100 mL = 0.02642 gal is a useful anchor. The reverse conversion — us gallon back to milliliter — uses the factor 3785, so 1 gal = 3785 mL.

All conversions use the internationally recognized factor of exactly 1 mL = 0.0002642 gal. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.

Quick Answer

Formula: US Gallon = Milliliter × 0.00026417218

Multiply any milliliter value by 0.00026417218 to get us gallon. One milliliter equals 0.00026417218 gal.

Reverse: Milliliter = US Gallon × 3785.41

Worked Examples

One US gallon
3785 mL × 0.00026417218 = 0.99989169 gal
3,785 mL = 1 US gallon — milk jug size.
One liter
1000 mL × 0.00026417218 = 0.26417218 gal
1,000 mL = 0.2642 US gallons — just over a quart.
US pint
473 mL × 0.00026417218 = 0.12495344 gal
473 mL = 0.125 US gallons = 1 US pint.
5 US gallons
1.893e+04 mL × 0.00026417218 = 4.9999868 gal
18,927 mL = 5 US gallons — standard water cooler bottle.

Mental Math Tricks

Exact factor

1 mL = 0.00026417218 gal. Memorize this for instant mental estimates.

Rounded shortcut

Use 0.00026417218 as a quick mental factor. Multiply your milliliters value by this to estimate US gallons.

Reverse check

To verify: multiply your result by 3785.41 to recover the original mL value.

Who Uses This Conversion?

Pharmacist

Measures liquid medication doses, compound quantities, and vial volumes in milliliters for precise dispensing.

Pastry Chef

Scales extracts, food colorings, and liquid flavorings in mL for consistent batch replication.

Lab Technician

Pipettes reagents, prepares serial dilutions, and calibrates instruments using mL graduations.

Pediatric Nurse

Calculates weight-based medication doses converted to mL for syringe administration.

Perfumer

Blends fragrance accords in small mL batches with high precision and high ingredient costs.

Cosmetic Formulator

Develops skincare products in 50-500 mL batches before scaling to full production.

Frequently Asked Questions

About Milliliter and US Gallon

Milliliter (mL)

The milliliter is one-thousandth of a liter, in use since the metric system was codified in France in 1795. The milli- prefix (from Latin mille, thousand) was standardized as part of the original SI prefix system.

Milliliters are the workhorse of medicine and cooking: syringes, dropper bottles, and nutritional labels all rely on mL for precise small-volume measurement. A standard US teaspoon is approximately 4.929 mL.

Interesting fact: The milliliter is numerically identical to the cubic centimeter (cm³), so 1 mL = 1 cm³ exactly. This equivalence is widely used in medicine, where a 5 cc syringe holds exactly 5 mL.

US Gallon (gal)

The US liquid gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. It traces its origins to the Queen Anne wine gallon of 1707, which American colonies adopted.

The US gallon differs from the UK Imperial gallon by about 16.5%. This matters for fuel economy: a US MPG figure is lower than the equivalent UK MPG for the same car.

Interesting fact: The United States, Liberia, and Myanmar are the only countries using the US gallon as a primary everyday volume unit.