Volume Unit Converterml · L · m³ · gallons · cups · fl oz · pints · ft³
Convert any volume unit instantly — liters to gallons, milliliters to cups, cubic meters to liters, fluid ounces to milliliters, and every combination in between. Covers US and UK units, cooking measures, and engineering volumes. Type once, see everything, copy in one click.
15+
Units Supported
US & UK
Gallon Standards
All at Once
Output Mode
Zero
Signup Required
Two Systems, One Converter
Volume measurement splits between SI metric and US/UK imperial — here's every unit and where it's used
Metric (SI) Units
Science, Europe, most of the world
US / Imperial Units
Cooking, US industry, UK legacy
Cooking Measures to Milliliters at a Glance
Keep this table open while cooking — US recipe measures converted to metric ml instantly
4.93 mlSalt, baking powder doses14.79 mlOil, butter, sauces59.1 mlSmall ingredient portions118.3 mlHalf cup of milk, cream236.6 mlStandard US recipe cup473.2 mlBeer glass, US milk carton946.4 ml~1 L: soup, orange juice3,785 mlFuel, paint, large containersUS vs UK: Not the Same Units
The UK pint, quart, and gallon are all ~20% larger than their US counterparts. Always confirm which system a recipe or spec uses.
cm³ = ml exactly
1 cubic centimeter (cm³) and 1 milliliter (ml) are the same volume by definition. Medical syringes, lab glassware, and 3D printing volumes labelled in cm³ or ml are directly interchangeable — no conversion needed.
Exact Formulas for Every Key Conversion
Use these to calculate manually — or to sanity-check what the tool outputs
| Convert | Formula | Example |
|---|---|---|
| L → gal (US) | L ÷ 3.78541 | 10 L = 2.642 gal |
| gal → L | gal × 3.78541 | 5 gal = 18.93 L |
| ml → fl oz | ml ÷ 29.5735 | 355 ml = 12 fl oz |
| fl oz → ml | fl oz × 29.5735 | 8 fl oz = 236.6 ml |
| L → ml | L × 1,000 | 1.5 L = 1,500 ml |
| m³ → L | m³ × 1,000 | 2.5 m³ = 2,500 L |
| L → cup (US) | L × 4.22675 | 1 L = 4.227 cups |
| cup → ml | cup × 236.588 | 3 cups = 709.8 ml |
| ft³ → L | ft³ × 28.3168 | 10 ft³ = 283.2 L |
| ml → tsp | ml ÷ 4.92892 | 15 ml = 3.04 tsp |
| ml → tbsp | ml ÷ 14.7868 | 30 ml = 2.03 tbsp |
| cm³ → ml | 1:1 exactly | 250 cm³ = 250 ml |
Common Containers — L, m³ and Gallons
Anchor unit values to familiar containers — verify your conversion makes physical sense
Fish tank (small)
75 L0.075 m³19.8 galBathtub (full)
150–250 L0.2 m³40–66 galHot water cylinder
150 L0.15 m³39.6 galCar fuel tank
50–70 L0.06 m³13–18.5 galSwimming pool (small)
50,000 L50 m³13,209 galShipping container
33,200 L33.2 m³8,773 galThree Steps, Zero Friction
Volume conversions should take seconds — not a tutorial
Enter your value
Type or paste any volume — integer or decimal. Works with 0.5 L, 355 ml, 1.75 gal, or any other value you have.
Select source unit
Pick from ml, L, m³, fl oz, cup, pint, quart, gallon (US or UK), tsp, tbsp, or ft³. All outputs appear instantly.
Copy any result
Tap the Copy button on any output row. One press puts that value on your clipboard — ready for a recipe, report, or code.
Volume Conversion Questions Answered
Covering L, ml, m³, gallons (US & UK), cups, fl oz, pints, quarts, tsp, tbsp and ft³ — with exact formulas
Core Volume Conversions
Enter your liter (L) value, select L as the source unit — the US gallon (gal) result appears instantly. Formula: L ÷ 3.78541 = US gal. Example: 10 L = 2.642 US gallons. Note: the UK/imperial gallon is different — L ÷ 4.54609 = UK gal. Always confirm which gallon your context requires.
Exactly 1 liter (L) = 1,000 milliliters (ml). This is a fixed SI metric definition. In reverse: 1 ml = 0.001 L. Common references: 500 ml = 0.5 L (a standard water bottle); 330 ml ≈ 0.33 L (a soda can); 250 ml = 0.25 L (one US cup = ~236.6 ml, slightly less).
Cubic meters to liters: m³ × 1,000 = L. Example: 2.5 m³ = 2,500 L. Liters to cubic meters: L ÷ 1,000 = m³. Example: 500 L = 0.5 m³. This conversion is essential for tanks, swimming pools, rooms, and engineering calculations. 1 cubic meter (m³) holds exactly 1,000 liters.
1 US cup = 8 US fluid ounces (fl oz) = 236.588 ml. 1 liter = 33.814 US fluid ounces. UK note: 1 UK cup = 10 UK fl oz = 284.1 ml. Fluid ounce (fl oz) measures volume — it is not the same as the weight ounce (oz). 1 US fl oz = 29.5735 ml; 1 UK fl oz = 28.4131 ml.
US gallons to liters: gal × 3.78541 = L. Example: 5 US gal = 18.93 L. UK (imperial) gallons to liters: gal × 4.54609 = L. Example: 5 UK gal = 22.73 L. The US gallon ≠ UK gallon — the US gallon is ~20% smaller. Fuel prices per gallon differ significantly between countries for this reason.
1 milliliter (ml) = 1 cubic centimeter (cm³) exactly — this is a defined equivalence. Therefore 1 liter = 1,000 cm³. This is why medical syringes marked in ml and cm³ are interchangeable. In cubic meters: 1 L = 0.001 m³ = 1,000 cm³. The cm³ notation is common in physics, chemistry, and engineering.
Cubic feet to liters: ft³ × 28.3168 = L. Example: 10 ft³ = 283.2 L. Cubic feet to US gallons: ft³ × 7.48052 = gal. Example: 5 ft³ = 37.4 US gal. Cubic feet (ft³) are common in HVAC airflow specs, aquarium sizing, and US shipping dimensions.
UntangleTools Volume Converter supports: milliliter (ml), centiliter (cl), deciliter (dl), liter (L), cubic centimeter (cm³), cubic meter (m³), teaspoon (tsp), tablespoon (tbsp), fluid ounce (fl oz), cup, pint (pt), quart (qt), US gallon (gal), UK gallon, and cubic foot (ft³). Type once, all units output simultaneously, one-click copy per row.
cm³ to m³: cm³ ÷ 1,000,000 = m³. Example: 5,000 cm³ = 0.005 m³. Cubic inches to cubic feet: in³ ÷ 1,728 = ft³ (since 12³ = 1,728). Example: 1,728 in³ = 1 ft³. These conversions appear in CAD output, material volume specs, and 3D printing file analysis.
1 US cup = 236.588 ml. 1 tablespoon (tbsp) = 14.787 ml (US). 1 teaspoon (tsp) = 4.929 ml. UK tablespoon = 17.76 ml. Australian tablespoon = 20 ml. When following international recipes, always check which tablespoon definition applies — the difference between US and AU tablespoons is ~35%.
Using the Tool
Three steps: (1) Enter any volume value — integer or decimal — into the input field. (2) Select your source unit from the dropdown: ml, L, m³, fl oz, cup, pint, quart, gallon, or ft³. (3) All supported output units update instantly. Tap the Copy icon next to any row to copy that value for use in recipes, reports, or code. No account, no install.
Yes. The converter handles SI metric (ml, cl, dl, L, cm³, m³) and US customary (fl oz, cup, pint, quart, US gallon, tsp, tbsp, ft³) units simultaneously. Select any metric unit and all imperial equivalents appear, or vice versa. The tool also distinguishes US gallon from UK (imperial) gallon — critical for fuel and recipe accuracy.
Yes — all of them. Full unit support: ml, cl, dl, L, cm³, m³, tsp, tbsp, fl oz (US), cup (US), pint (US/UK), quart (US), gallon (US), gallon (UK), ft³. Every unit is selectable as the source and all others output simultaneously. One-click copy available on each result row.
Yes. Decimal inputs are fully supported. Examples: 1.75 L → 0.462 US gal; 375 ml → 1.585 cups. The tool maintains full floating-point precision — no premature rounding. Useful for precise baking (e.g., ½ cup = 118.3 ml) and fuel calculations (e.g., 40.5 L = 10.7 US gal).
Yes. All factors use exact internationally defined values: 1 US gallon = 3.785411784 L exactly; 1 fl oz = 29.5735295625 ml exactly. Calculations use 64-bit floating-point throughout. The tool is completely free — no account, no subscription — at untangletools.com/unit/category/volume.
Cooking, Student & Projects
Multiply liters by 1,000: L × 1,000 = ml. Examples: 2 L = 2,000 ml; 0.5 L = 500 ml; 1.25 L = 1,250 ml. In reverse: ml ÷ 1,000 = L. The prefix "milli-" always means one-thousandth in the SI system — so the same rule applies to every metric unit (mg, mm, ms, etc.).
500 ml = 0.5 L (half a liter). 250 ml = 0.25 L (a quarter liter). In US cups: 500 ml = 2.113 cups; 250 ml = 1.057 cups ≈ 1 cup. In fl oz: 500 ml = 16.91 fl oz; 250 ml = 8.45 fl oz. Quick reference: a standard soda can = 330 ml = 0.33 L; a large water bottle = 750 ml = 0.75 L.
Multiply m³ by 1,000: m³ × 1,000 = L. For a rectangular tank: length (m) × width (m) × height (m) = m³ then × 1,000 for liters. Example: a 2 m × 1 m × 0.5 m tank = 1 m³ = 1,000 L. This applies to aquariums, water storage tanks, laboratory vessels, and swimming pools.
UntangleTools Volume Converter covers every academic and industrial unit in one place. For students: instant L↔ml, m³↔L, cups↔ml with the calculation logic shown. For engineers: ft³↔L, m³↔gal, cm³↔m³ with full decimal precision and one-click copy for pasting into lab reports, CAD notes, or tank sizing sheets. Free, no login, mobile-friendly.
Yes. The tool is fully responsive with large tap targets and a clean one-column layout on mobile. Open untangletools.com/unit/category/volume in any phone browser — Chrome, Safari, Firefox — and it loads instantly. Paste ingredient volumes from a recipe app or type manually. The tablespoon-to-ml and cup-to-ml conversions are especially useful mid-recipe. No app download needed.
Niche & Advanced Questions
ml to teaspoons: ml ÷ 4.92892 = tsp. Example: 15 ml = 3.04 tsp. ml to tablespoons: ml ÷ 14.7868 = tbsp. Example: 30 ml = 2.03 tbsp. In reverse: 1 tsp = 4.929 ml; 1 tbsp = 14.787 ml. Note: Australian tablespoon = 20 ml; UK tablespoon ≈ 17.76 ml; US tablespoon = 14.79 ml. International recipe discrepancies usually trace back to this difference.
1 US gallon = 3.78541 L. 1 UK (imperial) gallon = 4.54609 L. To convert: US gal × 1.20095 = UK gal (UK gallon is ~20% larger). UK gal × 0.832674 = US gal. This difference matters for fuel economy (mpg), large container purchases, and boat/vehicle fluid specs where US and UK manuals give different gallon figures.
Volume is the amount of 3D space an object occupies — expressed in m³, ft³, cm³. Capacity is the amount of fluid a container can hold — expressed in liters (L), gallons (gal), milliliters (ml). In everyday use the terms overlap: a 2-liter bottle has both a volume and a capacity of 2 L. The distinction matters in engineering: a solid steel cylinder has volume but no liquid capacity.
Cubic meters to cubic feet: m³ × 35.3147 = ft³. Example: a 50 m³ room = 1,765.7 ft³. In reverse: ft³ × 0.0283168 = m³. For tanks: a 10 m³ water tank = 353.1 ft³ = 10,000 L = 2,641.7 US gallons. Useful when comparing HVAC specs (often in ft³/min) with metric room dimensions, or US aquarium gallons with metric tank sizes.
The current unit set covers the most widely-used volume units: ml, cl, dl, L, cm³, m³, tsp, tbsp, fl oz, cup, pint, quart, US gallon, UK gallon, and ft³. For reference: 1 oil barrel (bbl) = 158.987 L = 42 US gal; 1 cubic yard = 764.555 L; 1 cubic inch = 16.387 ml. Barrels and cubic yards are on the roadmap — bookmark untangletools.com/unit/category/volume for updates.
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