Standard Butter Weight
1 level US teaspoon of solid unsalted butter weighs approximately 4,490 mg (4.49 grams, or ~4.5 g).
Cooking & Baking
Teaspoon of Butter to MG Converter
Convert teaspoons of butter to milligrams (mg) and grams. Discover exact weight, calories, and fat content for solid, melted, salted, and whipped butter.
Density used: 0.911 g/mL — Solid butter has a density of ~0.911 g/mL. 1 US tsp = ~4,490 mg.
Conversion direction
Water uses an approximate density of 1.000 g/mL.
Calculated result1 US tsp
4,928.92 mg
Formula used
01
Solid Butter — Teaspoon to MG Quick Reference
Pre-calculated milligram values for common teaspoon amounts of Solid Butter (density: 0.911 g/mL, US teaspoon).
| Teaspoons (tsp) | Milligrams (mg) | Grams (g) |
|---|---|---|
| 0.25 tsp | 1,122.56 mg | 1.1226 g |
| 0.5 tsp | 2,245.12 mg | 2.2451 g |
| 0.75 tsp | 3,367.69 mg | 3.3677 g |
| 1 tsp | 4,490.25 mg | 4.4902 g |
| 1.5 tsp | 6,735.37 mg | 6.7354 g |
| 2 tsp | 8,980.5 mg | 8.9805 g |
| 3 tsp | 13,470.74 mg | 13.4707 g |
| 4 tsp | 17,960.99 mg | 17.961 g |
| 5 tsp | 22,451.24 mg | 22.4512 g |
02
Solid Butter Variants — Density Comparison
Different forms of solid butter have slightly different densities, which affects the mg result per teaspoon.
| Variant | Density (g/mL) | mg per 1 tsp (US) |
|---|---|---|
| Solid Butter (Unsalted) | 0.911 g/mL | 4,490.25 mg |
| Solid Butter (Salted) | 0.915 g/mL | 4,509.96 mg |
| Melted Butter | 0.89 g/mL | 4,386.74 mg |
| Whipped Butter | 0.65 g/mL | 3,203.8 mg |
| Clarified Butter / Ghee | 0.905 g/mL | 4,460.67 mg |
| Plant-Based Butter | 0.91 g/mL | 4,485.32 mg |
03
Key Facts about Solid Butter
Stick Butter Equivalence
One standard US stick of butter equals 8 tablespoons or 24 teaspoons, weighing approximately 113,400 mg (113.4 grams / 4 oz).
Fat & Caloric Density
1 teaspoon (~4,500 mg) of butter contains about 36 calories, 4.1 grams of total fat, and 2.6 grams of saturated fat.
Whipped Butter Exception
Whipped butter has nitrogen or air incorporated, dropping its density to ~0.65 g/mL (only ~3,200 mg per teaspoon).
How to Convert a Teaspoon of Solid Butter to Milligrams
Teaspoons measure volume. Milligrams measure mass. To convert between them you need the substance density.
For Solid Butter, the density is approximately 0.911 g/mL. Solid butter has a density of ~0.911 g/mL. 1 US tsp = ~4,490 mg.
Formula
mg = tsp × 4.92892 mL × 0.911 g/mL × 1000Example: 1 tsp of Solid Butter = 1 × 4.92892 × 0.911 × 1000 = 4,490.25 mg
Methodology and density source
Density is a representative reference value. Product labels or manufacturer specifications should take priority when available.
The calculation uses the stated 0.911 g/mL density and the selected teaspoon standard. It does not infer a nutritional serving size or a medical dose.
For measurement definitions, see the teaspoon-to-milligram methodology.
Accuracy limitations
This is an estimate: spoon level, packing, particle size, moisture, temperature, and density can change the result.
Use a calibrated scale when the result matters. Level the spoon and identify whether the ingredient is loose, sifted, or packed.
FAQ
Frequently Asked Questions — Solid Butter to MG
How many milligrams (mg) are in 1 teaspoon of butter?
One level US teaspoon of standard solid butter weighs approximately 4,490 mg (4.49 grams).
How many mg of butter are in 1 tablespoon?
Since 1 tablespoon contains 3 teaspoons, 1 tbsp of butter weighs approximately 13,470 mg (13.47 grams / 0.48 oz).
How much does 1/2 teaspoon of butter weigh?
A 1/2 teaspoon of butter weighs roughly 2,245 mg (2.25 grams) and contains about 18 calories.
Does melted butter weigh the same per teaspoon as solid butter?
Thermal expansion lowers the density of warm melted butter slightly to ~0.89 g/mL (~4,386 mg per tsp), though the difference in everyday cooking is minor.
How many teaspoons of butter are in 100 grams (100,000 mg)?
100 grams of butter equals approximately 22.3 US teaspoons (or ~7.4 tablespoons).
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