The Complete Guide to Volume Conversions

This is our complete reference for converting volume units. It collects every unit we support, the exact conversion factors between them, worked examples, and full lookup tables — the goal is that you never need a second tab.

Prefer a calculator? Every conversion on this page has an instant, free tool — start at the tools hub or use the links under each unit below.

The units at a glance

Milliliter (ml)

The milliliter — one cubic centimeter — is the metric unit of medicine doses, beverage cans and recipe liquids.

• 1 ml = 0.001 liters (L) — Milliliter to Liter converter
• 1 ml = 0.202884 US teaspoons (tsp) — Milliliter to US teaspoon converter
• 1 ml = 0.067628 US tablespoons (tbsp) — Milliliter to US tablespoon converter
• 1 ml = 0.004227 US cups (cup) — Milliliter to US cup converter
• 1 ml = 0.033814 US fluid ounces (fl oz) — Milliliter to US fluid ounce converter
• 1 ml = 0.002113 US pints (pt) — Milliliter to US pint converter

Liter (L)

The liter (1,000 cubic centimeters) is the everyday metric volume: bottled water, fuel and engine displacement are all sold by the liter.

• 1 L = 1,000 milliliters (ml) — Liter to Milliliter converter
• 1 L = 202.8841 US teaspoons (tsp) — Liter to US teaspoon converter
• 1 L = 67.628 US tablespoons (tbsp) — Liter to US tablespoon converter
• 1 L = 4.2268 US cups (cup) — Liter to US cup converter
• 1 L = 33.814 US fluid ounces (fl oz) — Liter to US fluid ounce converter
• 1 L = 2.1134 US pints (pt) — Liter to US pint converter

US teaspoon (tsp)

The US teaspoon is defined as exactly 4.92892159375 ml — one third of a tablespoon — and anchors small quantities in American recipes.

• 1 tsp = 4.9289 milliliters (ml) — US teaspoon to Milliliter converter
• 1 tsp = 0.004929 liters (L) — US teaspoon to Liter converter
• 1 tsp = 0.333333 US tablespoons (tbsp) — US teaspoon to US tablespoon converter
• 1 tsp = 0.020833 US cups (cup) — US teaspoon to US cup converter
• 1 tsp = 0.166667 US fluid ounces (fl oz) — US teaspoon to US fluid ounce converter
• 1 tsp = 0.010417 US pints (pt) — US teaspoon to US pint converter

US tablespoon (tbsp)

The US tablespoon equals three teaspoons or about 14.79 ml. Sixteen tablespoons make one US cup, a ratio every baker eventually memorizes.

• 1 tbsp = 14.7868 milliliters (ml) — US tablespoon to Milliliter converter
• 1 tbsp = 0.014787 liters (L) — US tablespoon to Liter converter
• 1 tbsp = 3 US teaspoons (tsp) — US tablespoon to US teaspoon converter
• 1 tbsp = 0.0625 US cups (cup) — US tablespoon to US cup converter
• 1 tbsp = 0.5 US fluid ounces (fl oz) — US tablespoon to US fluid ounce converter
• 1 tbsp = 0.03125 US pints (pt) — US tablespoon to US pint converter

US cup (cup)

The US cup is half a US pint — 236.59 ml. American recipes measure almost everything in cups, which is why cup conversions are among the most searched on the web.

• 1 cup = 236.5882 milliliters (ml) — US cup to Milliliter converter
• 1 cup = 0.236588 liters (L) — US cup to Liter converter
• 1 cup = 48 US teaspoons (tsp) — US cup to US teaspoon converter
• 1 cup = 16 US tablespoons (tbsp) — US cup to US tablespoon converter
• 1 cup = 8 US fluid ounces (fl oz) — US cup to US fluid ounce converter
• 1 cup = 0.5 US pints (pt) — US cup to US pint converter

US fluid ounce (fl oz)

The US fluid ounce is about 29.57 ml — slightly larger than the UK fluid ounce. Eight fluid ounces make a US cup.

• 1 fl oz = 29.5735 milliliters (ml) — US fluid ounce to Milliliter converter
• 1 fl oz = 0.029574 liters (L) — US fluid ounce to Liter converter
• 1 fl oz = 6 US teaspoons (tsp) — US fluid ounce to US teaspoon converter
• 1 fl oz = 2 US tablespoons (tbsp) — US fluid ounce to US tablespoon converter
• 1 fl oz = 0.125 US cups (cup) — US fluid ounce to US cup converter
• 1 fl oz = 0.0625 US pints (pt) — US fluid ounce to US pint converter

US pint (pt)

The US liquid pint is 16 US fluid ounces, about 473 ml — noticeably smaller than the 568 ml British pint served in pubs.

• 1 pt = 473.1765 milliliters (ml) — US pint to Milliliter converter
• 1 pt = 0.473176 liters (L) — US pint to Liter converter
• 1 pt = 96 US teaspoons (tsp) — US pint to US teaspoon converter
• 1 pt = 32 US tablespoons (tbsp) — US pint to US tablespoon converter
• 1 pt = 2 US cups (cup) — US pint to US cup converter
• 1 pt = 16 US fluid ounces (fl oz) — US pint to US fluid ounce converter

US gallon (gal)

The US gallon is exactly 3.785411784 liters. American fuel prices are quoted per gallon, making this one of the most practical conversions for travelers.

• 1 gal = 3,785.41 milliliters (ml) — US gallon to Milliliter converter
• 1 gal = 3.7854 liters (L) — US gallon to Liter converter
• 1 gal = 768 US teaspoons (tsp) — US gallon to US teaspoon converter
• 1 gal = 256 US tablespoons (tbsp) — US gallon to US tablespoon converter
• 1 gal = 16 US cups (cup) — US gallon to US cup converter
• 1 gal = 128 US fluid ounces (fl oz) — US gallon to US fluid ounce converter

UK gallon (gal (UK))

The imperial (UK) gallon is 4.54609 liters — about 20% larger than the US gallon. Confusing the two is a classic source of fuel-economy errors.

• 1 gal (UK) = 4,546.09 milliliters (ml) — UK gallon to Milliliter converter
• 1 gal (UK) = 4.5461 liters (L) — UK gallon to Liter converter
• 1 gal (UK) = 922.3295 US teaspoons (tsp) — UK gallon to US teaspoon converter
• 1 gal (UK) = 307.4432 US tablespoons (tbsp) — UK gallon to US tablespoon converter
• 1 gal (UK) = 19.2152 US cups (cup) — UK gallon to US cup converter
• 1 gal (UK) = 153.7216 US fluid ounces (fl oz) — UK gallon to US fluid ounce converter

Every conversion formula

The table below lists the exact formula for every volume pair we support. All factors derive from the SI definitions of the units, so chaining them never introduces error.

One-line cross reference: every unit in every other unit

The complete pairwise reference — every supported volume unit expressed in each of the others:

• 1 milliliter = 0.001 liters
• 1 milliliter = 0.202884 US teaspoons
• 1 milliliter = 0.067628 US tablespoons
• 1 milliliter = 0.004227 US cups
• 1 milliliter = 0.033814 US fluid ounces
• 1 milliliter = 0.002113 US pints
• 1 milliliter = 0.00026417 US gallons
• 1 milliliter = 0.00021997 UK gallons
• 1 liter = 1,000 milliliters
• 1 liter = 202.8841 US teaspoons
• 1 liter = 67.628 US tablespoons
• 1 liter = 4.2268 US cups
• 1 liter = 33.814 US fluid ounces
• 1 liter = 2.1134 US pints
• 1 liter = 0.264172 US gallons
• 1 liter = 0.219969 UK gallons
• 1 us teaspoon = 4.9289 milliliters
• 1 us teaspoon = 0.004929 liters
• 1 us teaspoon = 0.333333 US tablespoons
• 1 us teaspoon = 0.020833 US cups
• 1 us teaspoon = 0.166667 US fluid ounces
• 1 us teaspoon = 0.010417 US pints
• 1 us teaspoon = 0.001302 US gallons
• 1 us teaspoon = 0.001084 UK gallons
• 1 us tablespoon = 14.7868 milliliters
• 1 us tablespoon = 0.014787 liters
• 1 us tablespoon = 3 US teaspoons
• 1 us tablespoon = 0.0625 US cups
• 1 us tablespoon = 0.5 US fluid ounces
• 1 us tablespoon = 0.03125 US pints
• 1 us tablespoon = 0.003906 US gallons
• 1 us tablespoon = 0.003253 UK gallons
• 1 us cup = 236.5882 milliliters
• 1 us cup = 0.236588 liters
• 1 us cup = 48 US teaspoons
• 1 us cup = 16 US tablespoons
• 1 us cup = 8 US fluid ounces
• 1 us cup = 0.5 US pints
• 1 us cup = 0.0625 US gallons
• 1 us cup = 0.052042 UK gallons
• 1 us fluid ounce = 29.5735 milliliters
• 1 us fluid ounce = 0.029574 liters
• 1 us fluid ounce = 6 US teaspoons
• 1 us fluid ounce = 2 US tablespoons
• 1 us fluid ounce = 0.125 US cups
• 1 us fluid ounce = 0.0625 US pints
• 1 us fluid ounce = 0.007813 US gallons
• 1 us fluid ounce = 0.006505 UK gallons
• 1 us pint = 473.1765 milliliters
• 1 us pint = 0.473176 liters
• 1 us pint = 96 US teaspoons
• 1 us pint = 32 US tablespoons
• 1 us pint = 2 US cups
• 1 us pint = 16 US fluid ounces
• 1 us pint = 0.125 US gallons
• 1 us pint = 0.104084 UK gallons
• 1 us gallon = 3,785.41 milliliters
• 1 us gallon = 3.7854 liters
• 1 us gallon = 768 US teaspoons
• 1 us gallon = 256 US tablespoons
• 1 us gallon = 16 US cups
• 1 us gallon = 128 US fluid ounces
• 1 us gallon = 8 US pints
• 1 us gallon = 0.832674 UK gallons
• 1 uk gallon = 4,546.09 milliliters
• 1 uk gallon = 4.5461 liters
• 1 uk gallon = 922.3295 US teaspoons
• 1 uk gallon = 307.4432 US tablespoons
• 1 uk gallon = 19.2152 US cups
• 1 uk gallon = 153.7216 US fluid ounces
• 1 uk gallon = 9.6076 US pints
• 1 uk gallon = 1.2009 US gallons

Real-world reference points

Kitchen anchors make volume real: a teaspoon is 5 ml, a tablespoon 15 ml, a US cup 237 ml, a soda can 355 ml, a wine bottle 750 ml, and a US gallon of milk 3.785 liters. Note that dry and liquid measuring cups hold the same volume — they differ only in how you level them off.

Most-used conversion tables

US cup to US fluid ounce

US gallon to US cup

US cup to US tablespoon

Liter to US gallon

Milliliter to US fluid ounce

Milliliter to Liter

Liter to Milliliter

Liter to US teaspoon

Common mistakes to avoid

Volume trips people up more than any other category: US and UK fluid ounces differ (29.57 vs 28.41 ml), US and UK gallons differ by 20%, a US pint is 473 ml while a British pub pint is 568 ml, and an Australian tablespoon is 20 ml, not 15. Always confirm which country a recipe comes from before converting.

Tips for accurate conversions

• Round once, at the end. Chaining conversions and rounding each step compounds error surprisingly fast.
• Watch for regional unit variants. Some unit names have US and imperial variants with different sizes — always check which one your source means.
• Estimate first, then compute. A rough mental figure catches order-of-magnitude mistakes before they end up in your work.
• Use exact factors for anything official. The factors in this guide are the internationally defined values, not approximations.

Frequently asked questions

Which volume unit should I use?

Use the unit your audience expects: metric units for international and scientific audiences, US customary units for American everyday contexts. When in doubt, give both — "5 km (3.1 mi)" style.

Are these conversion factors exact?

Yes. Every factor on this page comes from the internationally agreed definition of the units involved (most were fixed by treaty in 1959 or by SI definition), so the only inaccuracy is the rounding you choose for the final answer.

Can I use these tables offline?

Yes — print this page or save it as a PDF. The tables are computed from exact factors and will not go out of date.