Cups, Grams & Ounces
Last reviewed: May 2026
Convert between volume and weight for cooking. Volume-to-weight is ingredient-specific: a cup of flour (125g) differs from sugar (200g).1
| Ingredient | Grams | Oz |
|---|---|---|
| All-purpose flour | 125 | 4.4 |
| Granulated sugar | 200 | 7.1 |
| Butter | 227 | 8.0 |
| Water/milk | 237 | 8.4 |
| Honey | 340 | 12.0 |
| Measure | Equivalents |
|---|---|
| 1 tbsp | 3 tsp = 15 mL |
| 1 cup | 16 tbsp = 237 mL = 8 fl oz |
| 1 pint | 2 cups = 473 mL |
Cooking measurement confusion stems from two systems coexisting: U.S. customary (cups, tablespoons, ounces) and metric (grams, milliliters). The U.S. is one of the only countries still using volumetric measurements for cooking — virtually every other country measures by weight. Weight-based measurement is inherently more accurate because volume varies with how ingredients are packed. One cup of flour can weigh 120-150 grams depending on whether it's scooped, spooned, or sifted — a 25% variation that can ruin baked goods.
Volume: 1 tablespoon = 3 teaspoons = 15 ml. 1 cup = 16 tablespoons = 8 fluid ounces = 237 ml. 1 quart = 4 cups = 32 oz = 946 ml. 1 gallon = 4 quarts = 3,785 ml. Weight: 1 ounce = 28.35 grams. 1 pound = 16 ounces = 454 grams. Temperature: °F = (°C × 9/5) + 32. Common conversions: 350°F = 177°C, 375°F = 191°C, 400°F = 204°C, 425°F = 218°C.
Cooking is forgiving — adding a little more garlic or salt won't ruin a stir-fry. Baking is chemistry. The ratios of flour, sugar, fat, liquid, and leavening must be precise for proper structure, rise, and texture. Professional bakers weigh all ingredients in grams using a kitchen scale. A recipe calling for "2 cups flour" can vary by 60 grams depending on measurement technique — that's enough to produce a cake that's dense and dry versus light and tender. Investing $15-25 in a digital kitchen scale is the single biggest improvement most home bakers can make.
Volume-to-weight conversions vary by ingredient density. One cup of: all-purpose flour = 125g, bread flour = 130g, granulated sugar = 200g, brown sugar (packed) = 220g, butter = 227g (2 sticks), honey = 340g, water/milk = 240g, rolled oats = 90g, cocoa powder = 85g, powdered sugar = 120g. These conversions are not interchangeable — 1 cup of sugar weighs 60% more than 1 cup of flour despite occupying the same volume.
Multiplying or dividing a recipe seems simple — double everything to serve twice as many. But some adjustments are needed: spices and salt don't scale linearly — use 1.5× for a doubled recipe and adjust to taste. Baking time changes — a doubled cake batter in the same pan size needs slightly longer baking at a slightly lower temperature. Yeast doesn't need doubling in bread recipes — 1.5× is usually sufficient because yeast multiplies during fermentation. Liquid may need slight reduction when scaling up due to less proportional evaporation in larger volumes.
UK and Australian "cups" differ from U.S. cups. A UK cup is 284 ml (versus 237 ml U.S.), and an Australian tablespoon is 20 ml (versus 15 ml U.S.). Japanese recipes use a "go" (180 ml cup) for rice. Indian recipes use "katori" cups that vary by region. European recipes almost exclusively use grams and milliliters. When following an international recipe, verify which measurement system it uses before converting — a recipe from an Australian cookbook using "1 cup flour" means 150g, not the 125g an American baker would measure.
Above 3,000 feet elevation, atmospheric pressure drops enough to affect cooking and baking. Water boils at lower temperatures (about 2°F less per 1,000 feet), so boiled foods take longer to cook. Baked goods rise faster and can collapse — adjustments include reducing leavening by 25%, increasing liquid by 2-4 tablespoons per cup, increasing oven temperature by 15-25°F, and reducing sugar by 1-3 tablespoons per cup. Deep frying requires lower oil temperatures (3°F less per 1,000 feet above sea level). Denver (5,280 feet), Mexico City (7,350 feet), and Bogotá (8,660 feet) all require significant recipe adaptation.
Liquid and dry measuring cups are not interchangeable. Liquid cups (glass or plastic with a pour spout) should be read at eye level at the meniscus (bottom of the curved surface). Dry cups (flat-topped metal or plastic) should be filled and leveled with a straight edge — never packed (except brown sugar, which is always packed). Using a liquid cup for flour introduces significant error because you can't level the top. The difference can be 20-30% in actual volume, which in baking produces noticeably different results.
When you're missing an ingredient, substitutions require conversion knowledge. 1 cup buttermilk = 1 cup milk + 1 tablespoon lemon juice or vinegar (let stand 5 minutes). 1 tablespoon cornstarch = 2 tablespoons flour (for thickening). 1 cup cake flour = 1 cup all-purpose flour minus 2 tablespoons + 2 tablespoons cornstarch. 1 cup self-rising flour = 1 cup all-purpose + 1½ teaspoons baking powder + ¼ teaspoon salt. 1 large egg = ¼ cup liquid egg substitute = 3 tablespoons ground flaxseed + 1 tablespoon water (vegan). Understanding these substitution ratios saves trips to the store and reduces food waste.
Oven temperatures differ significantly between regions. U.S. recipes use Fahrenheit; European recipes use Celsius; UK recipes sometimes use Gas Marks. Key equivalents: Gas Mark 4 = 350°F = 177°C (moderate). Gas Mark 6 = 400°F = 204°C (hot). Gas Mark 8 = 450°F = 232°C (very hot). Convection ovens run 25-30°F hotter than conventional at the same setting — reduce the temperature by 25°F or the time by 10-15% when converting a conventional recipe for convection. Toaster ovens may have hot spots; an oven thermometer ($6-10) reveals whether your oven's display matches reality — many ovens are off by 25-50°F.
Understanding yield helps plan grocery purchases. 1 pound of dried pasta yields about 8 cups cooked (4-8 servings). 1 cup of dried rice yields 3 cups cooked. 1 pound of boneless meat yields 3-4 servings; bone-in yields 2-3 servings. Fresh herbs: 1 tablespoon fresh ≈ 1 teaspoon dried (3:1 ratio). One medium lemon yields approximately 3 tablespoons of juice and 1 tablespoon of zest. One head of garlic contains 10-12 cloves; one medium clove yields about ½ teaspoon minced. These yield conversions prevent both waste and mid-recipe store runs.
Professional kitchens measure almost everything by weight, and the reason is precision and consistency. A cup of flour can weigh anywhere from 120 to 160 grams depending on how it was scooped — that 33% variance is the difference between a tender cake and a dense brick. Professional recipes specify "200g bread flour" rather than "1.5 cups" because weight is absolute: 200 grams is 200 grams regardless of humidity, settling, or scooping technique. Investing in a kitchen scale ($15-25 for a reliable digital model) eliminates the most common source of baking failures. For cooking (as opposed to baking), volume measurements work fine because sauces, soups, and stir-fries tolerate variation — an extra tablespoon of soy sauce won't ruin a stir-fry the way an extra half-cup of flour ruins bread.
Recipes that call for fresh herbs when you only have dried (or vice versa) require more than a simple volume swap. The standard ratio is 1 tablespoon fresh = 1 teaspoon dried for leafy herbs like basil, oregano, thyme, and parsley, because drying concentrates flavor roughly threefold. Woody herbs like rosemary and sage are more potent when dried and may need a 4:1 ratio instead. Frozen vegetables generally substitute 1:1 for fresh by weight, but they release water during cooking — reduce added liquid by 2-3 tablespoons per cup of frozen vegetables in soups and sauces. Frozen fruit releases even more liquid: reduce sugar by 10-15% to compensate for the concentrated sweetness, and add 1-2 tablespoons of cornstarch or tapioca to absorb excess moisture in pies and cobblers. Canned tomatoes substitute for fresh at roughly 1.5 cups canned (drained) per pound of fresh, since canning pre-cooks and softens the flesh.
Most recipes assume large eggs (about 50 grams whole, 30g white, 20g yolk). Using medium or extra-large eggs without adjusting quantities affects hydration and leavening in baking. For every 3 large eggs a recipe calls for, substitute 4 medium eggs or 2 extra-large plus 1 tablespoon of beaten egg. In recipes requiring 5+ eggs, weighing becomes essential: crack into a bowl and weigh 50g per large egg called for. Egg substitutes for allergies or dietary restrictions also require conversion knowledge: 1 large egg equals 3 tablespoons of aquafaba (chickpea water) for meringues, or 1 tablespoon ground flaxseed mixed with 3 tablespoons water (rested 5 minutes) for binding in muffins and pancakes. These substitutes work differently — aquafaba whips like egg whites, while flax acts as a binder without leavening — so choosing the right substitute depends on the egg's role in the specific recipe.
Professional kitchens measure almost everything by weight, and the reason is precision and consistency. A cup of flour can weigh anywhere from 120 to 160 grams depending on how it was scooped — that 33% variance is the difference between a tender cake and a dense brick. Professional recipes specify "200g bread flour" rather than "1.5 cups" because weight is absolute: 200 grams is 200 grams regardless of humidity, settling, or scooping technique. Investing in a kitchen scale ($15-25 for a reliable digital model) eliminates the most common source of baking failures. For cooking (as opposed to baking), volume measurements work fine because sauces, soups, and stir-fries tolerate variation — an extra tablespoon of soy sauce won't ruin a stir-fry the way an extra half-cup of flour ruins bread.
Recipes that call for fresh herbs when you only have dried (or vice versa) require more than a simple volume swap. The standard ratio is 1 tablespoon fresh = 1 teaspoon dried for leafy herbs like basil, oregano, thyme, and parsley, because drying concentrates flavor roughly threefold. Woody herbs like rosemary and sage are more potent when dried and may need a 4:1 ratio instead. Frozen vegetables generally substitute 1:1 for fresh by weight, but they release water during cooking — reduce added liquid by 2-3 tablespoons per cup of frozen vegetables in soups and sauces. Frozen fruit releases even more liquid: reduce sugar by 10-15% to compensate for the concentrated sweetness, and add 1-2 tablespoons of cornstarch or tapioca to absorb excess moisture in pies and cobblers. Canned tomatoes substitute for fresh at roughly 1.5 cups canned (drained) per pound of fresh, since canning pre-cooks and softens the flesh.
Most recipes assume large eggs (about 50 grams whole, 30g white, 20g yolk). Using medium or extra-large eggs without adjusting quantities affects hydration and leavening in baking. For every 3 large eggs a recipe calls for, substitute 4 medium eggs or 2 extra-large plus 1 tablespoon of beaten egg. In recipes requiring 5+ eggs, weighing becomes essential: crack into a bowl and weigh 50g per large egg called for. Egg substitutes for allergies or dietary restrictions also require conversion knowledge: 1 large egg equals 3 tablespoons of aquafaba (chickpea water) for meringues, or 1 tablespoon ground flaxseed mixed with 3 tablespoons water (rested 5 minutes) for binding in muffins and pancakes. These substitutes work differently — aquafaba whips like egg whites, while flax acts as a binder without leavening — so choosing the right substitute depends on the egg's role in the specific recipe.
Professional kitchens measure almost everything by weight, and the reason is precision and consistency. A cup of flour can weigh anywhere from 120 to 160 grams depending on how it was scooped — that 33% variance is the difference between a tender cake and a dense brick. Professional recipes specify "200g bread flour" rather than "1.5 cups" because weight is absolute: 200 grams is 200 grams regardless of humidity, settling, or scooping technique. Investing in a kitchen scale ($15-25 for a reliable digital model) eliminates the most common source of baking failures. For cooking (as opposed to baking), volume measurements work fine because sauces, soups, and stir-fries tolerate variation — an extra tablespoon of soy sauce won't ruin a stir-fry the way an extra half-cup of flour ruins bread.
Recipes that call for fresh herbs when you only have dried (or vice versa) require more than a simple volume swap. The standard ratio is 1 tablespoon fresh = 1 teaspoon dried for leafy herbs like basil, oregano, thyme, and parsley, because drying concentrates flavor roughly threefold. Woody herbs like rosemary and sage are more potent when dried and may need a 4:1 ratio instead. Frozen vegetables generally substitute 1:1 for fresh by weight, but they release water during cooking — reduce added liquid by 2-3 tablespoons per cup of frozen vegetables in soups and sauces. Frozen fruit releases even more liquid: reduce sugar by 10-15% to compensate for the concentrated sweetness, and add 1-2 tablespoons of cornstarch or tapioca to absorb excess moisture in pies and cobblers. Canned tomatoes substitute for fresh at roughly 1.5 cups canned (drained) per pound of fresh, since canning pre-cooks and softens the flesh.
Most recipes assume large eggs (about 50 grams whole, 30g white, 20g yolk). Using medium or extra-large eggs without adjusting quantities affects hydration and leavening in baking. For every 3 large eggs a recipe calls for, substitute 4 medium eggs or 2 extra-large plus 1 tablespoon of beaten egg. In recipes requiring 5+ eggs, weighing becomes essential: crack into a bowl and weigh 50g per large egg called for. Egg substitutes for allergies or dietary restrictions also require conversion knowledge: 1 large egg equals 3 tablespoons of aquafaba (chickpea water) for meringues, or 1 tablespoon ground flaxseed mixed with 3 tablespoons water (rested 5 minutes) for binding in muffins and pancakes. These substitutes work differently — aquafaba whips like egg whites, while flax acts as a binder without leavening — so choosing the right substitute depends on the egg's role in the specific recipe.
Professional kitchens measure almost everything by weight, and the reason is precision and consistency. A cup of flour can weigh anywhere from 120 to 160 grams depending on how it was scooped — that 33% variance is the difference between a tender cake and a dense brick. Professional recipes specify "200g bread flour" rather than "1.5 cups" because weight is absolute: 200 grams is 200 grams regardless of humidity, settling, or scooping technique. Investing in a kitchen scale ($15-25 for a reliable digital model) eliminates the most common source of baking failures. For cooking (as opposed to baking), volume measurements work fine because sauces, soups, and stir-fries tolerate variation — an extra tablespoon of soy sauce won't ruin a stir-fry the way an extra half-cup of flour ruins bread.
Recipes that call for fresh herbs when you only have dried (or vice versa) require more than a simple volume swap. The standard ratio is 1 tablespoon fresh = 1 teaspoon dried for leafy herbs like basil, oregano, thyme, and parsley, because drying concentrates flavor roughly threefold. Woody herbs like rosemary and sage are more potent when dried and may need a 4:1 ratio instead. Frozen vegetables generally substitute 1:1 for fresh by weight, but they release water during cooking — reduce added liquid by 2-3 tablespoons per cup of frozen vegetables in soups and sauces. Frozen fruit releases even more liquid: reduce sugar by 10-15% to compensate for the concentrated sweetness, and add 1-2 tablespoons of cornstarch or tapioca to absorb excess moisture in pies and cobblers. Canned tomatoes substitute for fresh at roughly 1.5 cups canned (drained) per pound of fresh, since canning pre-cooks and softens the flesh.
Most recipes assume large eggs (about 50 grams whole, 30g white, 20g yolk). Using medium or extra-large eggs without adjusting quantities affects hydration and leavening in baking. For every 3 large eggs a recipe calls for, substitute 4 medium eggs or 2 extra-large plus 1 tablespoon of beaten egg. In recipes requiring 5+ eggs, weighing becomes essential: crack into a bowl and weigh 50g per large egg called for. Egg substitutes for allergies or dietary restrictions also require conversion knowledge: 1 large egg equals 3 tablespoons of aquafaba (chickpea water) for meringues, or 1 tablespoon ground flaxseed mixed with 3 tablespoons water (rested 5 minutes) for binding in muffins and pancakes. These substitutes work differently — aquafaba whips like egg whites, while flax acts as a binder without leavening — so choosing the right substitute depends on the egg's role in the specific recipe.
Professional kitchens measure almost everything by weight, and the reason is precision and consistency. A cup of flour can weigh anywhere from 120 to 160 grams depending on how it was scooped — that 33% variance is the difference between a tender cake and a dense brick. Professional recipes specify "200g bread flour" rather than "1.5 cups" because weight is absolute: 200 grams is 200 grams regardless of humidity, settling, or scooping technique. Investing in a kitchen scale ($15-25 for a reliable digital model) eliminates the most common source of baking failures. For cooking (as opposed to baking), volume measurements work fine because sauces, soups, and stir-fries tolerate variation — an extra tablespoon of soy sauce won't ruin a stir-fry the way an extra half-cup of flour ruins bread.
Recipes that call for fresh herbs when you only have dried (or vice versa) require more than a simple volume swap. The standard ratio is 1 tablespoon fresh = 1 teaspoon dried for leafy herbs like basil, oregano, thyme, and parsley, because drying concentrates flavor roughly threefold. Woody herbs like rosemary and sage are more potent when dried and may need a 4:1 ratio instead. Frozen vegetables generally substitute 1:1 for fresh by weight, but they release water during cooking — reduce added liquid by 2-3 tablespoons per cup of frozen vegetables in soups and sauces. Frozen fruit releases even more liquid: reduce sugar by 10-15% to compensate for the concentrated sweetness, and add 1-2 tablespoons of cornstarch or tapioca to absorb excess moisture in pies and cobblers. Canned tomatoes substitute for fresh at roughly 1.5 cups canned (drained) per pound of fresh, since canning pre-cooks and softens the flesh.
Most recipes assume large eggs (about 50 grams whole, 30g white, 20g yolk). Using medium or extra-large eggs without adjusting quantities affects hydration and leavening in baking. For every 3 large eggs a recipe calls for, substitute 4 medium eggs or 2 extra-large plus 1 tablespoon of beaten egg. In recipes requiring 5+ eggs, weighing becomes essential: crack into a bowl and weigh 50g per large egg called for. Egg substitutes for allergies or dietary restrictions also require conversion knowledge: 1 large egg equals 3 tablespoons of aquafaba (chickpea water) for meringues, or 1 tablespoon ground flaxseed mixed with 3 tablespoons water (rested 5 minutes) for binding in muffins and pancakes. These substitutes work differently — aquafaba whips like egg whites, while flax acts as a binder without leavening — so choosing the right substitute depends on the egg's role in the specific recipe.
→ Use grams for baking. Dramatically more consistent.
→ 16 tbsp = 1 cup. Most useful kitchen conversion.
→ Ingredient matters. Cup of flour ≠ cup of sugar by weight.
→ Buy a kitchen scale. $15 for much better results.
See also: Volume · Weight · Temperature