Gallons to Cups Converter
1 gallon (gal) equals 16 cups (cup).
Quick answer
One US gallon is exactly 16 cups : ½ gallon = 8 cups, a quart = 4 cups.
1 gallon = 16 cups 1 cup = 0.0625 gallons
Formula: cup = gal × 16
Quick estimate: multiply by 16.
From
Liter (L) Gallon (gal) Milliliter (mL) Cup (cup) Fluid ounce (fl oz) Tablespoon (tbsp) Teaspoon (tsp) Cubic meter (m³) Pint (pt) Quart (qt) Cubic centimeter (cm³) Cubic foot (ft³) Imperial gallon (imp gal) Cubic yard (yd³) Barrel (bbl) Cubic inch (in³) Imperial pint (imp pt) Microliter (µL) Deciliter (dL) Centiliter (cL) Imperial fluid ounce (imp fl oz) Metric cup Acre-foot (ac⋅ft) Bushel (bu) Metric tablespoon Metric teaspoon Cubic millimeter (mm³) Hectoliter (hL) Shot Board foot (FBM) Cord (cd) Cubic decimeter (dm³) Dash Imperial quart (imp qt) Peck (pk) Pinch Standard wine bottle Australian tablespoon Olympic swimming pool US legal cup Cubic kilometer (km³) Drop (gtt) Imperial cup Kiloliter (kL) Megaliter (ML) Stick of butter (volume) Dry pint (dry pt) Dry quart (dry qt) Go (合) Imperial bushel Imperial tablespoon Smidgen Standard cubic foot (scf) Twenty-foot equivalent unit (TEU) Japanese cup US liquid barrel Cubic mile (mi³) Face cord Fifth Gigaliter (GL) Gill (gi) Imperial teaspoon Magnum Million barrels (MMbbl) Normal cubic meter (Nm³) Stere (st) Thousand barrels (Mbbl) Thousand cubic feet (Mcf) Mass UK beer barrel Acre-inch (ac⋅in) Billion cubic feet (Bcf) Decaliter (daL) Firkin Fluid dram (fl dr) Imperial dessertspoon Imperial gill Imperial peck Million cubic feet (MMcf) Sho (升) Standard cubic meter (Sm³) Roman amphora Bathtub Koku (石) Minim (min) Sheng (升) Trillion cubic feet (Tcf) Canadian cup US hogshead Cubic ångström (ų) Dry barrel Forty-foot equivalent unit (FEU) Freight ton Half bottle Jeroboam Piccolo Register ton (RT) Soda can Tad Teacup Planck volume (VP) Dou (斗) Ephah Fanega Imperial fluid drachm Imperial hogshead Kilderkin Methuselah Pipe Quarter (UK dry) Sextarius Vedro Biblical hin Chinese dan (石) Earth volume Roman cyathus Russian chetvert Schoppen Sydharb Alqueire Balthazar Bath Butt Cantara Chaldron Charka Coffeespoon Congius Cor Cuartillo Cubic Bohr radius (a₀³) Displacement ton (volume) Fluid scruple Heaped bushel Hemina Heqat Hop (홉) Hot tub Imperial minim Lambda (λ) Log Modius Nebuchadnezzar Omer Pinte Pottle Rehoboam Salmanazar Saltspoon To (斗) Wine tun Wineglass Chinese cuo (撮) Chinese ge (合) Chinese shao (勺) Dutch kan Dutch mud Egyptian hin Eimer English wine rundlet Fuder Grand Canyon Japanese shaku (volume) (勺) Lake Erie Ohm Oxhoft Russian vodka bottle Scheffel Seidel Swedish stop Thai sat UK beer tun Acetabulum Almud Almude Azumbre Bochka Boisseau Canada Chetverik Choinix Chopine Chous Coomb Copa Culleus Demiard Doe (되) Feuillette Garnets Hot-air balloon Imperial pottle Kab Kanna Kappe Khar Kotyle Kruzhka Kwian Kyathos Last Lethech Ligula Mal (말) Medimnos Melchior Melchizedek Metretes Moio Muid Osmina Posson Primat Puncheon Quartarius Quartaut Quartilho Ro Roquille Sai (才) Seah Seom (섬) Setier Shkalik Solomon Sovereign Strike Thanan Tierce Tunna Urna Velte Water ton Xestes
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To
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Liter (L) Gallon (gal) Milliliter (mL) Cup (cup) Fluid ounce (fl oz) Tablespoon (tbsp) Teaspoon (tsp) Cubic meter (m³) Pint (pt) Quart (qt) Cubic centimeter (cm³) Cubic foot (ft³) Imperial gallon (imp gal) Cubic yard (yd³) Barrel (bbl) Cubic inch (in³) Imperial pint (imp pt) Microliter (µL) Deciliter (dL) Centiliter (cL) Imperial fluid ounce (imp fl oz) Metric cup Acre-foot (ac⋅ft) Bushel (bu) Metric tablespoon Metric teaspoon Cubic millimeter (mm³) Hectoliter (hL) Shot Board foot (FBM) Cord (cd) Cubic decimeter (dm³) Dash Imperial quart (imp qt) Peck (pk) Pinch Standard wine bottle Australian tablespoon Olympic swimming pool US legal cup Cubic kilometer (km³) Drop (gtt) Imperial cup Kiloliter (kL) Megaliter (ML) Stick of butter (volume) Dry pint (dry pt) Dry quart (dry qt) Go (合) Imperial bushel Imperial tablespoon Smidgen Standard cubic foot (scf) Twenty-foot equivalent unit (TEU) Japanese cup US liquid barrel Cubic mile (mi³) Face cord Fifth Gigaliter (GL) Gill (gi) Imperial teaspoon Magnum Million barrels (MMbbl) Normal cubic meter (Nm³) Stere (st) Thousand barrels (Mbbl) Thousand cubic feet (Mcf) Mass UK beer barrel Acre-inch (ac⋅in) Billion cubic feet (Bcf) Decaliter (daL) Firkin Fluid dram (fl dr) Imperial dessertspoon Imperial gill Imperial peck Million cubic feet (MMcf) Sho (升) Standard cubic meter (Sm³) Roman amphora Bathtub Koku (石) Minim (min) Sheng (升) Trillion cubic feet (Tcf) Canadian cup US hogshead Cubic ångström (ų) Dry barrel Forty-foot equivalent unit (FEU) Freight ton Half bottle Jeroboam Piccolo Register ton (RT) Soda can Tad Teacup Planck volume (VP) Dou (斗) Ephah Fanega Imperial fluid drachm Imperial hogshead Kilderkin Methuselah Pipe Quarter (UK dry) Sextarius Vedro Biblical hin Chinese dan (石) Earth volume Roman cyathus Russian chetvert Schoppen Sydharb Alqueire Balthazar Bath Butt Cantara Chaldron Charka Coffeespoon Congius Cor Cuartillo Cubic Bohr radius (a₀³) Displacement ton (volume) Fluid scruple Heaped bushel Hemina Heqat Hop (홉) Hot tub Imperial minim Lambda (λ) Log Modius Nebuchadnezzar Omer Pinte Pottle Rehoboam Salmanazar Saltspoon To (斗) Wine tun Wineglass Chinese cuo (撮) Chinese ge (合) Chinese shao (勺) Dutch kan Dutch mud Egyptian hin Eimer English wine rundlet Fuder Grand Canyon Japanese shaku (volume) (勺) Lake Erie Ohm Oxhoft Russian vodka bottle Scheffel Seidel Swedish stop Thai sat UK beer tun Acetabulum Almud Almude Azumbre Bochka Boisseau Canada Chetverik Choinix Chopine Chous Coomb Copa Culleus Demiard Doe (되) Feuillette Garnets Hot-air balloon Imperial pottle Kab Kanna Kappe Khar Kotyle Kruzhka Kwian Kyathos Last Lethech Ligula Mal (말) Medimnos Melchior Melchizedek Metretes Moio Muid Osmina Posson Primat Puncheon Quartarius Quartaut Quartilho Ro Roquille Sai (才) Seah Seom (섬) Setier Shkalik Solomon Sovereign Strike Thanan Tierce Tunna Urna Velte Water ton Xestes
1 gallon = 16 cups
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How to convert gallons to cups
cup = gal × 16
To convert gallons to cups, multiply the number of gallons by 16.
Example: 42 gal to cup
Start with the value in gallons: 42 gal.
Multiply by 16: 42 × 16 = 672.
Result: 42 gallons = 672 cups .
Going the other way, 1 cup = 0.0625 gallons, so to convert cups back to gallons you divide by the same number. See cups to gallons .
Where the conversion factor comes from
In US customary measure: 1 gallon = 4 quarts = 8 pints = 16 cups = 128 fluid ounces . A US quart is 946.35 mL and a US cup 236.59 mL. UK (imperial) quarts and pints are about 20% larger.
Mental math: gal to cup in your head
Multiply by 16, or use the chain: gallon → 4 quarts → 8 pints → 16 cups.
When you need to convert gallons to cups
Making drinks, punch and soups in bulk. Water intake goals.
Common mistakes
Mixing imperial and US gallons.
Everyday gallons in cups
Example Gallons Cups
Half gallon 0.5 gal 8 cup 1 gallon 1 gal 16 cup Water cooler jug 5 gal 80 cup
Gallons to cups conversion table
More gal to cup values
What is a gallon?
The US gallon is the unit used in the United States for gasoline, milk and other liquids.
More about gallons →
What is a cup?
The US customary cup is a cooking measure equal to 8 US fluid ounces, half a pint, or 16 tablespoons, about 236.6 mL.
More about cups →
Convert gallons to other units
Convert other units to cups
Frequently asked questions
How many cups are in a gallon? One gallon is 16 cups.
How many gallons are in a cup? One cup is 0.0625 gallons.
What is the formula to convert gallons to cups? cup = gal × 16.
How many cups in a gallon? Exactly 16 US cups.