Volume Unit Converter

The Volume Unit Converter is a free online tool that quickly and accurately converts various volume units used worldwide, including milliliters, liters, gallons, and cups. You can instantly perform volume conversions needed in various fields such as cooking, scientific experiments, construction, and trade.

This calculator supports over 30 units including metric system (liters, milliliters), US customary units (gallons, quarts, cups), British units, Korean traditional units (doe, mal), and Japanese traditional units (sho, go). All conversions are based on international standards (ISO, NIST).

Key Features

Support for 30+ Volume Units

Includes all major volume units used worldwide, from metric system to US customary units, British units, and Asian traditional units. Convert volumes of various scales from milliliters to cubic meters, from teaspoons to oil barrels.

Real-time Conversion

As soon as you enter a number, it automatically converts to all units and displays results. Provides instant feedback without needing to press a separate calculate button.

Quick Preset Values

Provides preset buttons for commonly used volume values (250ml cup, 500ml water bottle, 1L milk carton, etc.) to quickly check conversion results.

Detailed Conversion Information

Not just showing results, but also displaying conversion formulas and calculation processes to help you understand how conversions work.

Visual Size Comparison

Visualizes the relative size of values expressed in each unit in card format for easy comparison at a glance.

Real-life Comparison Examples

Helps you intuitively understand the actual size of converted volumes by comparing them with familiar objects like water bottles, bathtubs, and swimming pools.

Copy Function

Copy all conversion results to clipboard with one click, making them immediately usable in other documents or applications.

Scientific Notation Support

When dealing with very large or small values, you can switch to scientific notation to improve readability.

Mobile Optimized

Designed with responsive layout to be convenient on all devices including desktops, tablets, and smartphones.

How to Use

Step 1: Enter Value

Enter the volume value you want to convert in the input field at the top. Both integers and decimals are accepted.

Step 2: Select Unit

Select the unit of the entered value from the dropdown menu next to the input field. Units are categorized into metric system, US customary units, British units, traditional units, etc.

Step 3: Check Results

Results automatically converted to all units are displayed on screen immediately upon input. Major units are shown in card format, and all units in table format.

Step 4: Use Results

Click the copy button next to the needed conversion value to save it to clipboard and paste it elsewhere.

Supported Volume Units

Metric System (Liter-based)

• Milliliter (mL) – 1/1000 liter
• Centiliter (cL) – 1/100 liter
• Deciliter (dL) – 1/10 liter
• Liter (L) – Base unit
• Kiloliter (kL) – 1000 liters

Metric System (Cubic units)

• Cubic centimeter (cm³) – Same as 1 mL
• Cubic decimeter (dm³) – Same as 1 L
• Cubic meter (m³) – 1000 L

US Cooking Units

• Teaspoon (tsp) – Approx. 4.93 mL
• Tablespoon (tbsp) – Approx. 14.79 mL
• Fluid ounce (fl oz) – Approx. 29.57 mL
• Cup – Approx. 236.59 mL
• Pint (pt) – Approx. 473.18 mL
• Quart (qt) – Approx. 946.35 mL
• Gallon (gal) – Approx. 3.79 L

British Units

• British fluid ounce – Approx. 28.41 mL
• British pint – Approx. 568.26 mL
• British quart – Approx. 1.14 L
• British gallon – Approx. 4.55 L

Korean Traditional Units

• Hop – Approx. 180 mL
• Doe – Approx. 1.8 L (10 hop)
• Mal – Approx. 18 L (10 doe)
• Seom – Approx. 180 L (10 mal)

Japanese Traditional Units

• Go (合) – Approx. 180.39 mL
• Sho (升) – Approx. 1.8 L
• To (斗) – Approx. 18 L

Industrial Units

• Oil barrel (bbl) – Approx. 158.99 L
• Cubic foot (ft³) – Approx. 28.32 L
• Cubic yard (yd³) – Approx. 764.55 L

Use Cases

Cooking and Baking

When following foreign recipes, you can accurately measure by converting units like cups, pints, and gallons to milliliters or liters. Particularly useful when converting between American and European recipes.

Scientific Experiments and Research

Convert volumes of reagents and solutions marked in various units in the laboratory to unified units for accurate experiments.

Construction and Civil Engineering

Calculate volumes of concrete, water, and other construction materials, and convert them to various units like cubic meters, liters, and gallons for ordering and construction planning.

International Trade

Enables accurate quantity verification and contracts when different volume units are used in each country. Essential especially for liquid cargo.

Automotive and Machinery

Check fuel tank capacity, engine displacement, oil capacity, etc. by converting them to various units.

Education

Can be used as an educational tool for students to understand volume unit concepts and practice unit conversions.

Travel

During overseas travel, convert fuel sold in gallons at gas stations to liters, or convert beverage volumes to familiar units.

Usage Tips

Use Quick Calculation Buttons

When you want to quickly calculate entered values as 2x, 10x, 100x, etc., using quick calculation buttons is convenient.

Adjust Decimal Places

You can adjust the decimal display from 2 to 10 places depending on your needs. Increase decimal places for precise scientific calculations, and decrease for everyday use.

Quick Check with Preset Values

For commonly used volumes (cups, water bottles, milk cartons, etc.), click preset buttons to instantly see values converted to other units.

Keyboard Shortcuts

Press Ctrl+K to jump directly to the input field, and press ESC to clear the entered value.

Check Real-life Comparisons

When you can’t get a sense of how large the converted volume actually is, check the real-life comparison section at the bottom to understand by comparing with familiar objects like water bottles, bathtubs, and pools.

Frequently Asked Questions

What’s the difference between US gallon and British gallon?

A US gallon is approximately 3.785 liters, while a British gallon (imperial gallon) is approximately 4.546 liters. The British gallon is about 20% larger. The US and UK use the same unit name but have different actual volumes, so caution is needed.

Are cubic centimeters and milliliters the same?

Yes, 1 cm³ = 1 mL exactly. Both represent 1/1000 of a liter.

Are Korean doe and Japanese sho the same unit?

They’re almost similar but with slight differences. Korean doe is approximately 1.8 liters, while Japanese sho is approximately 1.8039 liters, showing a minor difference. Both originated from traditional units for measuring rice.

What happens if I enter a negative value?

Since volume cannot physically be negative, entering a negative number will display an error message. Only values of 0 or greater can be entered.

Can very large or small values be converted?

Yes, it’s possible. For very large or small values, they will automatically be displayed in scientific notation, or you can enable scientific notation in settings.

How accurate are the calculation results?

All conversion factors are based on international standards (ISO, NIST) and calculated as accurately as possible within the limits of floating-point arithmetic. Sufficiently accurate for general purposes.

Can it be used on mobile devices?

Yes, it can be used with optimized screens on all devices including smartphones and tablets. You can access and use it directly from a web browser without installing a separate app.

Can it be used offline?

Internet connection is required for initial access, but afterward, basic functions can be used offline through browser cache.

Accuracy and Reliability

This Volume Unit Converter was created based on the following international standards:

• International System of Units (SI) standard definitions
• US National Institute of Standards and Technology (NIST) official conversion factors
• International Organization for Standardization (ISO) 31-1 standard
• US FDA and USDA official measurement units

All conversion factors are regularly reviewed and updated to maintain the latest standards. However, for extremely precise scientific research or legal metrology, please obtain verification from accredited metrology organizations.

Privacy Protection

This calculator does not collect or store user personal information. All entered values are processed only within the user’s browser and are not transmitted to servers. You can use it in a completely safe and privacy-protected environment.

Support and Contact

If you encounter problems while using the Volume Unit Converter or have suggestions for improvements, please contact us anytime. Your feedback greatly helps improve our service.

If there are additional units that need support or if you have suggestions for new features, please let us know. We will continue to update to provide better service.

Volume Unit Converter – Accurate and Fast Online Volume Conversion Tool

This tool is for reference purposes, and please obtain verification from official metrology organizations before making important decisions.