Unit Converter for Recipes
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: August 19, 2026Cups, Grams, and the Problem of Two Measuring Systems
US recipes measure by volume; most of the rest of the world measures by weight. Converting between the two systems for the same category — volume-to-volume or weight-to-weight — is a straightforward unit conversion once you have accurate reference factors, which is what this calculator applies.
The Formula
Weight: Result = Amount × (g per source unit) / (g per target unit)
Volume conversions route through milliliters as the common base unit; weight conversions route through grams. This two-step approach (convert to base, then to target) avoids needing a separate conversion factor for every possible pair of units.
Where This Matters
- Following international recipes — converting a metric recipe (grams, milliliters) to US cups and vice versa.
- Scaling with kitchen tools — converting to whatever unit your measuring cups, spoons, or kitchen scale actually supports.
- Precision baking — weight-based measurement is more accurate than volume for dry ingredients like flour, so converting a volume recipe to grams reduces variability.
Standard Conversion Factors
| Unit | Milliliters |
|---|---|
| 1 teaspoon | 4.929 mL |
| 1 tablespoon | 14.787 mL |
| 1 fluid ounce | 29.574 mL |
| 1 cup | 236.588 mL |
| 1 pint | 473.176 mL |
| 1 quart | 946.353 mL |
| 1 gallon | 3785.41 mL |
| Unit | Grams |
|---|---|
| 1 ounce | 28.3495 g |
| 1 pound | 453.592 g |
| 1 kilogram | 1000 g |
How to Use This Calculator
- Choose Volume Conversion or Weight Conversion from the mode selector.
- Enter the Amount you want to convert.
- Select the source unit and the target unit from the dropdown lists.
- Select Calculate to get the converted amount.
Related Calculations
For oven settings rather than ingredient quantities, see the Oven Temperature Converter, and for scaling a full recipe use the Recipe Scaling Calculator.
Principles of Culinary Measurement: Weight vs. Volume
A culinary recipe unit converter translates ingredient measurements between volume units (cups, tablespoons, teaspoons, milliliters, fluid ounces) and mass/weight units (grams, ounces, pounds, kilograms), while bridging differences between US Customary, Metric, and Imperial measurement systems.
Why Professional Baking Relies on Mass (Weight)
Volume measurements of dry ingredients are notoriously inaccurate due to ingredient compaction and settling:
- A "Cup" of Flour Varies by Over 30%: Scooping flour directly with a measuring cup packs approx. 140 to 150 grams into the cup; aerating and spooning flour into the cup yields approx. 120 to 125 grams. This 25g difference can turn a moist cake dry and rubbery.
- Universal Precision of Grams: Weighing dry ingredients on a digital kitchen scale in grams (g) provides 100% reproducible culinary results regardless of humidity or packing technique.
Standard Culinary Ingredient Density Equivalencies
| Ingredient | 1 US Cup (Volume) | 1 Tablespoon (tbsp) | 1 Teaspoon (tsp) |
|---|---|---|---|
| All-Purpose Flour / Bread Flour | 120 grams (4.23 oz) | 7.5 grams | 2.5 grams |
| Granulated White Sugar | 200 grams (7.05 oz) | 12.5 grams | 4.2 grams |
| Packed Brown Sugar | 220 grams (7.76 oz) | 13.8 grams | 4.6 grams |
| Butter (1 Stick = 0.5 Cup) | 227 grams (8.00 oz) | 14.2 grams | 4.7 grams |
| Water, Milk, Honey | 240 grams (8.47 oz) | 15.0 grams | 5.0 grams |
| Table Salt (Fine) | 292 grams (10.3 oz) | 18.0 grams | 6.0 grams |
US Customary vs. Imperial vs. Metric Volume Standards
1 Metric Cup (Australia, NZ, Canada) = 250.00 mL
1 Imperial Cup (UK Historic) = 284.13 mL = 10 Imperial Fluid Ounces
Step-by-Step Worked Calculation Example
Example: Converting an American Cookie Recipe to Metric Grams
Problem: A European baker prepares an American cookie recipe calling for: 2.25 cups all-purpose flour, 1.0 tsp baking soda, 0.5 tsp salt, 1.0 cup (2 sticks) softened butter, 0.75 cup granulated sugar, and 0.75 cup packed brown sugar. Convert the recipe into exact metric grams.
Step 1: Convert dry ingredients using density tables:
Flour = 2.25 cups × 120g/cup = 270.0 grams
Baking Soda = 1.0 tsp × 4.8g/tsp = 4.8 grams
Fine Salt = 0.5 tsp × 6.0g/tsp = 3.0 grams
Step 2: Convert fats and sugars:
Butter = 1.0 cup × 227g/cup = 227.0 grams
Granulated Sugar = 0.75 cup × 200g/cup = 150.0 grams
Packed Brown Sugar = 0.75 cup × 220g/cup = 165.0 grams
Conclusion: The metric formula is 270g flour, 227g butter, 150g white sugar, 165g brown sugar, 4.8g baking soda, and 3g salt.
Oven Temperature Conversions
Converting between Fahrenheit (°F), Celsius (°C), and British Gas Mark:
Specific Gravity and Degrees Brix in Culinary Syrups
In professional confectionery, sauce making, and beverage brewing, the density of sugar solutions is measured using Degrees Brix (°Bx) — the percentage of sucrose by weight in an aqueous solution (1 °Bx = 1.0g sucrose in 100g solution).
For instance, pure Grade A Maple Syrup is legally standardized at 66.0 °Bx (Specific Gravity ≈ 1.32 g/mL), meaning 1 US Cup (236.6 mL) of pure maple syrup weighs an astounding 312.3 grams on a kitchen scale.
Water Displacement Method for Solid Fats
When measuring irregularly shaped cold solid fats (such as lard, shortening, or cold butter chunks) without a digital scale, culinary chefs utilize Archimedes' principle of Water Displacement:
- To measure 1/2 cup of shortening: Fill a liquid 2-cup measuring cup with exactly 1 cup of cold water.
- Submerge solid shortening chunks until the water level rises to exactly 1.5 cups.
- Drain the water; exactly 1/2 cup (113 grams) of solid shortening remains in the cup.
Alcohol By Volume (ABV) and Proof Standards
In flambéing, reductions, and liqueur infusions:
Dry vs. Fluid Ounces in American Culinary Measures
A frequent culinary error is confusing Dry Ounces (Weight, oz) with Fluid Ounces (Volume, fl oz):
- Fluid Ounces (fl oz): Measure volume (1 US Cup = 8 fl oz = 236.6 mL). 8 fluid ounces of pure water weighs 8.0 dry ounces.
- Dry Ounces (oz): Measure mass (1 lb = 16 dry ounces = 453.6 grams). 8 fluid ounces (1 cup) of all-purpose flour weighs only 4.23 dry ounces (120g), while 8 fluid ounces of honey weighs 12.0 dry ounces (340g).
Baker's Pinch, Dash, and Drop Measurements
Butter Volume and Stick Measurements
In American cooking and commercial food service:
- 1 Full Pound of Butter (4 Sticks): 453.6 grams = 2 Cups = 32 Tablespoons.
- 1 Stick of Butter: 113.4 grams = 0.5 Cup = 8 Tablespoons (1/4 lb).
- 1 Tablespoon of Butter: 14.2 grams = 3 Teaspoons = 0.5 Fluid Ounce.
Yeast Conversions: Fresh vs. Active Dry vs. Instant
In professional baking: 100g Fresh Compressed Cake Yeast = 40g to 50g Active Dry Yeast = 33g Instant Dry Yeast (IDY). Instant dry yeast can be blended directly with dry flour without prior warm water proofing, accelerating commercial production cycles.
Gelatin Bloom Strength and Sheet Conversions
In pastry confection, gelatin is graded by Bloom strength (Bronze 140 Bloom, Silver 160 Bloom, Gold 200 Bloom, Platinum 250 Bloom). One standard sheet of Gold gelatin (2.0g) equals approximately 2.5g of powdered gelatin.