Enter baking soda mass (mg/g/oz) or volume (tsp/tbsp/mL) to estimate the other value for cooking/recipe conversions.

Baking Soda Weight ↔ Spoon Measure Conversion Calculator (Cooking)

Enter exactly 1 value (mass or volume) to calculate the other

Assumes 1 level US teaspoon of baking soda ≈ 4.6 g (adjust with Spoon Level). Powder volumes vary by brand/humidity/packing—use a kitchen scale for best accuracy.

Common Mistakes Quick tips
  • Entering values in both fields. Fill exactly one: either mass or volume.
  • Using water-based conversions for powders. Baking soda’s volume varies with brand, humidity, and packing.
  • Mixing US and metric spoons. US tsp = 4.92892 mL; Metric tsp = 5 mL; US tbsp = 14.7868 mL.
  • Ignoring the Spoon Level/Compaction setting—scant, rounded, or heaping can change results by 10–50%.
  • Confusing baking soda with baking powder; they are different ingredients with different densities and uses.
When to Use This Calculator
  • Converting package weights (mg, g, oz) to kitchen measures (tsp/tbsp) for recipes.
  • Standardizing recipe cards across US and metric kitchens.
  • Scaling amounts when only a spoon measure or a weight is given.
  • Quick estimating when you don’t have a scale handy (best accuracy comes from weighing).
Input Definitions
  • Baking Soda Mass — choose mg, g, or oz; 1 oz = 28.349523125 g.
  • Volume — choose US tsp (4.92892 mL), Metric tsp (5 mL), US tbsp (14.7868 mL), or mL.
  • Spoon Level / Compaction — multiplies the base density: scant 0.9, level 1.0, rounded 1.2, heaping 1.5.
  • Assumption — Level US tsp of baking soda ≈ 4.6 g; results are estimates due to packing and particle size.
Note: For cooking/recipe conversions only. Spoon-volume measures for powders are approximate and vary by brand and packing. Do not use this calculator for medical or veterinary dosing (including antacid use). Follow product labeling and consult a clinician/pharmacist if you have dosing questions.

Baking Soda Weight ↔ Teaspoons (Approx.) Formula

The following formulas estimate baking soda mass in milligrams and US teaspoons using a standard assumption of 4.6 g per level US teaspoon and an optional packing factor p. Powder volumes vary—use a kitchen scale (or check your product packaging/brand reference) for best accuracy.

\mathrm{tsp_{US}} = \frac{m_{\mathrm{mg}}}{4600\,p}\quad\quad m_{\mathrm{mg}} = 4600\,p \cdot \mathrm{tsp_{US}}
  • Assumption: level US teaspoon of baking soda ≈ 4.6 g (4600 mg); p = packing factor (scant 0.9, level 1.0, rounded 1.2, heaping 1.5).
  • US teaspoon = 4.92892 mL; Metric teaspoon = 5 mL; US tablespoon = 14.7868 mL (3 US tsp).
  • 1 ounce (oz) = 28.349523125 g.

How do you convert mg of baking soda to teaspoons? Divide milligrams by 4600 and adjust for packing p: tsp = mg ÷ (4600 × p); for a level spoon use p = 1.0.

How do you convert teaspoons of baking soda to mg? Multiply teaspoons by 4600 and packing p: mg = 4600 × p × tsp; for level teaspoons set p = 1.0.

Baking Soda mg to US Teaspoons (Approx.) Conversion Table

Approximate level US teaspoons from baking soda mass
Mass (mg) Teaspoons (US, approx.)
1000.022
2500.054
5000.109
7500.163
1,0000.217
1,5000.326
2,0000.435
2,3000.500
2,5000.543
3,0000.652
3,5000.761
4,0000.870
4,5000.978
4,6001.000
5,0001.087
7,5001.630
9,2002.000
10,0002.174
15,0003.261
20,0004.348
* Assumes level US teaspoons at 4.6 g (4600 mg) per tsp. Adjust for packing with p: scant 0.9, level 1.0, rounded 1.2, heaping 1.5.

Example Problem

Convert 2300 mg of baking soda to US teaspoons (level).

Use the formula: tsp = mg ÷ 4600.

tsp = 2300 ÷ 4600 = 0.5 tsp