Volume Conversion Calculator to Convert Liquid Measurements

Volume Conversion Calculator Sign

This volume converter will convert gallons (gal), liters (l), quarts (qt), milliliters (ml), pints (pt), cups (cup), and ounces (oz) to their most popular counterparts.

Plus, unlike other online unit converters, this calculator will show the formula it used for converting as well as the step-by-step math it used to complete the conversion.

Finally, the calculator also provides a feature that will allow you to create your own custom, printable, volume conversion chart. Just select the type you are converting from and to, enter the desired starting and ending volumes, and then click the button. Cool!

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Volume Conversion Calculator

Convert standard and metric volume units for the 22 most popular conversions related to liquid.

Special Instructions

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Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None

Conversion type:

Select the desired conversion option. The volume conversion calculator will then rename the fields according to your selection.


Volume to convert from:

Enter the volume units to convert from the type listed on in this line.

Liters : equiv: equivalent:equivalent:

Volume conversion result:

This is the volume units entered above converted to the type listed on this line.

If you would like to save the current entries to the secure online database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

Create Conversion Chart

Volume conversion chart:

To create a custom volume conversion chart that you can print out, enter the starting and ending volume based on the first type listed in the selected conversion type. Then click the Create Conversion Chart button. This will open a printer friendly window containing your custom volume conversion table.

BegStartStartingStarting Gallons:

Starting units:

Enter the units you want the chart to start at.

EndEndEndingEnding Gallons:

Ending units:

Enter the units you want the chart to stop at.

RndRoundRoundRound Liters to:

Round conversion units:

Select the number of places you would like the "to" values in the chart rounded to. If "None" is selected, no rounding will be performed and raw values will be entered into the chart.

Help and Tools


Common volume conversion formulas.

Volume Conversion Formula Table

The following volume conversion table lists the liquid conversion formulas for the corresponding type.

ConversionAbbrev.Formula (rounded)
Gallons to Litersgal to lgal x 3.7854118
Liters to Gallonsl to gall x .6241721
Gallons to Ouncesgal to ozgal x 128
Ounces to Gallonsoz to galoz x .0078125
Gallons to Pintsgal to ptgal x 8
Pints to Gallonspt to galpt x .125
Liters to Millilitersl to mll x 1000
Milliliters to Litersml to lml x .001
Ounces to Cupsoz to cupoz x .125
Cups to Ouncescup to ozcup x 8
Ounces to Litersoz to loz x .0295735
Liters to Ouncesl to ozl x 33.8140227
Milliliters to Ouncesml to ozml x .0338140
Ounces to Millilitersoz to mloz x 29.5735296
Ounces to Pintsoz to ptoz x .0625
Pints to Ouncespt to ozpt x 16
Ounces to Quartsoz to qtoz x .03125
Quarts to Ouncesqt to ozqt x 32
Pints to Literspt to lpt x .4731765
Liters to Pintsl to ptl x 2.1133764
Quarts to Litersqt to lqt x .9463529
Liters to Quartsl to qtl x 1.0566882

If there is a conversion type you think should be added to the calculator, please let me know in the feedback form located beneath the calculator.

Adjust Calculator Width:

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

Show/Hide Popup Keypads:

Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

Stick/Unstick Tools:

Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.