40 Grams of Butter to Cups
40 grams of Butter (Unsalted or Salted) is about 2⅞ tablespoons, or 0.18 cups (0.35 US butter sticks).
For practical kitchen measuring, 40 grams of Butter (Unsalted or Salted) is about 2⅞ tablespoons.
Density Note: Calibrated for Solid stick form at cool room temperature (65°F / 18°C) at a reference density of 227g per cup (0.960 g/mL).
40 grams of Butter (Unsalted or Salted) = 1/6 cups
Decimal value: 0.18 cups • Practical kitchen fraction: 1/6 cups
Calculation & Mathematical Derivation
To convert 40 grams of Butter (Unsalted or Salted) into US Customary measuring cups (236.6 mL):
Cups = Weight in Grams ÷ Grams per Cup (Bulk Density)Cups = 40g ÷ 227g/cup = 0.18 cups (kitchen fraction: 1/6 cups)Tablespoons = 40g ÷ 14.19g/tbsp = 2.8 tablespoonsThis calculation is calibrated specifically for Solid stick form at cool room temperature (65°F / 18°C) under standard kitchen conditions (sourced from USDA FoodData Central (FDC ID 173410)).
Technique Note: 1 stick of butter = 1/2 cup = 8 tablespoons = 113.4g (4 oz). 2 sticks = 1 cup = 226.8g (~227g).
40g of Butter Across Cup Standards
Because cup sizes vary internationally, here is how this weight converts across US Customary, US Legal, Metric, UK Imperial, and Japanese cups.
| Ingredient | Weight | Cups (US Standard) | Tablespoons | Teaspoons |
|---|---|---|---|---|
| US Customary Cup (236.588 mL) | 40g | 1/6 (0.18 cups) | 2.8 tbsp | 8.5 tsp |
| US Legal Cup (Nutrition) (240 mL) | 40g | 1/6 (0.17 cups) | 2.8 tbsp | 8.3 tsp |
| Metric Cup (250 mL) | 40g | 1/6 (0.17 cups) | 2.7 tbsp | 8.0 tsp |
| UK Imperial Cup (284.131 mL) | 40g | 1/6 (0.15 cups) | 2.3 tbsp | 7.0 tsp |
| Japanese Cup (200 mL) | 40g | 1/6 (0.21 cups) | 3.3 tbsp | 10.0 tsp |
Kitchen Measurement Converter
Live CalculationConvert weight to volume accurately by accounting for density differences.
Use custom package value (optional)
Kitchen measure: 2 tbsp + 2.5 tsp (2.8 tbsp)
40 grams of Butter (Unsalted or Salted) equals approximately 1/6 cups (US Customary Cup).
How to Measure 40g of Butter (Unsalted or Salted) Accurately
Standard dairy butter containing 80% to 82% milkfat, 16% to 18% water, and 1% to 2% milk solids. In the US, 1 cup equals exactly 2 sticks (16 tbsp / 8 oz).
For creaming with sugar, butter should be pliable (65°F / 18°C). Your finger should leave an indentation without sinking into melted grease.
Nearby Butter Conversions
Need a slightly different quantity of Butter (Unsalted or Salted)? Check these calibrated amounts:
Helpful Tools for Butter Recipes
Scale your recipe or convert companion units for this baking session:
Scientific Methodology for Butter (Unsalted or Salted)
The conversion calculations for Butter (Unsalted or Salted) are derived from peer-reviewed laboratory bulk density measurements cataloged in USDA FoodData Central (FDC ID 173410). Volume calculations assume a standard US Customary culinary cup of 236.588 mL (8 US fluid ounces). Because factors such as humidity, particle size distribution, and scooping compression alter volumetric yield, weighing on a calibrated digital scale remains the gold standard in professional baking.
Frequently Asked Questions
How many cups is 40 grams of Butter (Unsalted or Salted)?
40 grams of Butter (Unsalted or Salted) equals 1/6 cups in standard US Customary measuring cups (0.18 cups), or 1/6 cups in US Legal.
How many tablespoons is 40g of Butter (Unsalted or Salted)?
40g of Butter (Unsalted or Salted) equals approximately 2.8 tablespoons (or 8.5 teaspoons).
What is the density and measurement condition of Butter (Unsalted or Salted)?
Under standard conditions (Solid stick form at cool room temperature (65°F / 18°C)), Butter (Unsalted or Salted) weighs approximately 227 grams per US Customary cup (bulk density: 0.960 g/mL). Reference source: USDA FoodData Central (FDC ID 173410).
How do I measure 40g of Butter (Unsalted or Salted) without a scale?
To measure 40g of Butter (Unsalted or Salted) without a scale, use 1/6 cups (or approximately 2.8 tablespoons). Always ensure Butter (Unsalted or Salted) is measured as: Solid stick form at cool room temperature (65°F / 18°C).