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How Much Is 0.45 Tablespoons of Baking Powder in Ounces?

0.45 tablespoons of baking powder equals 0.23 oz. Baking powder has a density of 230g per cup (14.38g per tablespoon), which means it's relatively light compared to other common cooking ingredients. For comparison, 0.45 tablespoons of honey would be 0.34 oz.

0.45 tablespoons of baking powder
=
0.23oz
Result using all tablespoon standards info
0.23 oz (US) 0.23 oz (Metric Tablespoon) 0.31 oz (Australian Tablespoon)
Try: 1 tablespoon = 0.51 oz 2 tablespoons = 1.01 oz 3 tablespoons = 1.52 oz 4 tablespoons = 2.03 oz
Compare: 0.45 tablespoons active dry yeast = 0.14 oz 0.45 tablespoons baking soda = 0.22 oz 0.45 tablespoons black pepper = 0.12 oz
Convert a different ingredient
0.45 tablespoons of baking powder is also
6.47 g (grams)
0.23

Formula and Step-by-Step

tablespoons × 14.38g/tbsp ÷ 28.3495g/oz = ounces
  1. Start with 0.45 tablespoons of baking powder
  2. 1 tablespoon of baking powder = 14.38g
  3. 0.45 × 14.38 = 6.47g
  4. Convert grams to ounces: 6.47 ÷ 28.3495 = 0.23 oz

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

Baking powder loses potency over time. If yours is more than 6 months old, test it: drop a teaspoon into hot water. If it bubbles vigorously, it is still active.

Baking Powder at Different Amounts

How baking powder scales across common tablespoons measurements. Your amount (0.45 tablespoons) is highlighted.

0.45 tbsp0.23 oz1 tbsp0.51 oz2 tbsp1.01 oz3 tbsp1.52 oz4 tbsp2.03 oz5 tbsp2.54 oz6 tbsp3.04 oz8 tbsp4.06 oz

Other Amounts of Baking Powder

Tablespoons US Ounces Metric Tablespoon Australian Tablespoon
0.45 tablespoons 0.23 oz 0.23 oz 0.31 oz
1 tablespoon 0.51 oz 0.51 oz 0.69 oz
2 tablespoons 1.01 oz 1.03 oz 1.37 oz
3 tablespoons 1.52 oz 1.54 oz 2.06 oz
4 tablespoons 2.03 oz 2.06 oz 2.74 oz
5 tablespoons 2.54 oz 2.57 oz 3.43 oz
6 tablespoons 3.04 oz 3.09 oz 4.11 oz
8 tablespoons 4.06 oz 4.11 oz 5.49 oz
10 tablespoons 5.07 oz 5.14 oz 6.86 oz
12 tablespoons 6.08 oz 6.17 oz 8.23 oz
16 tablespoons 8.11 oz 8.23 oz 10.97 oz

Understanding the Units

What is a Tablespoon?

A tablespoon is roughly the volume of a large soup spoon. In precise terms, 1 US tablespoon equals 14.787 ml, which is very close to the 15 ml metric standard used in most of the world. Three teaspoons make one tablespoon.

What is an Ounce?

Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.

Frequently Asked Questions

About 0.23 oz, based on baking powder having a density of 230g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Multiply the number of tablespoons by 14.38 (grams per tablespoon for baking powder), then divide by 28.3495 to convert grams to ounces. For 0.45 tablespoons: 0.45 × 14.38 = 6.47g, then 6.47 ÷ 28.3495 = 0.23 oz.
For the most accurate results, weigh baking powder on a kitchen scale. If measuring by volume, spoon the ingredient into the measuring spoon and level it off with a straight edge rather than scooping directly.
Weight-per-cup values vary because of differences in how the ingredient is measured (spooned vs scooped), grind size, moisture content, and settling during storage. Our values use standardized measurement methods from established culinary references.
Reverse the conversion: 0.23 oz × 28.3495 = 6.47g, then 6.47g ÷ 14.38 = 0.45 tablespoons. Or use the Ounces to Tablespoons converter.
person Written by Sean Day verified Reviewed by CookingConvert update Last updated Apr 3, 2026