Powdered sugar

Powdered sugar is the most deceptive ingredient to measure by volume: a sifted cup can weigh half as much as a packed cup! Composed of pulverized sugar and a touch of cornstarch to prevent caking, precise measurement is non-negotiable. Our tool ensures you get the exact amount needed for silky frostings and tender shortcrusts, eliminating the guesswork.

Essential for grit-free glazes, silky buttercream, and tender shortbread. The added starch absorbs moisture and helps stabilize whipped cream.

What is Powdered sugar?

Powdered sugar is the most deceptive ingredient to measure by volume: a sifted cup can weigh half as much as a packed cup! Composed of pulverized sugar and a touch of cornstarch to prevent caking, precise measurement is non-negotiable. Our tool ensures you get the exact amount needed for silky frostings and tender shortcrusts, eliminating the guesswork.

Quick convert

  • US cup = 236.588 mL
  • 1 tbsp = 14.787 mL
  • 1 tsp = 4.929 mL
Density source:USDA SR Legacy

Powdered sugar — g → Cups

gCups
500.4
1000.8
1501.3
2001.7
2502.1
3002.5
3502.9
4003.3
4503.8
5004.2
6005.0
7005.8
8006.7
9007.5
10008.3

Powdered sugar — Tbsp → g

Tbspg
18
215
323
430
538
645
753
860
968
1075
1183
1290
1398
14105
15113
20150
25188
30225

Powdered sugar — Cup → g

Cupsg
1/8 cup15
1/4 cup30
1/3 cup40
1/2 cup60
2/3 cup80
3/4 cup90
1 cup120
1 1/2 cups180
2 cups240

Powdered sugar — mL → g

mLg
105
2513
5025
7538
10051
12563
15076
200101
250127
500254
750380
1000507

Powdered sugar — Tsp → g

Tspg
13
25
38
410
513
615
718
820
923
1025
1128
1230
1333
1435
1538
2050
2563
3075

Powdered sugar — oz → g

ozg
128
257
385
4113
5142
8227
10283
12340
15425
20567
25709
30850
401134
501417

Baking Conversion Chart

Exact cup-to-gram weights for flour, sugar, cocoa, and every baking ingredient. Print it, stick it up, bake with precision.

Use Powdered sugar as a substitute for

Have this ingredient on hand? These are the situations where it can stand in for others.

  • Emergency DIY: Blend 1 cup granulated sugar + 1 tbsp cornstarch on high until powdery. Note: It won't be as fine as commercial 10X sugar and may be gritty in frostings.

Sugars: packed vs loose

Sugars are hygroscopic and crystal size varies by brand. A packed cup can overshoot by 20%, collapsing cakes or making cookies spread. Weight guarantees the chemistry (Maillard, creaming) behaves as intended.

  • Brown sugar is typically packed; white/granulated should be loose unless stated.
  • Switch to weight for consistent sweetness across batches.
Why weigh sugar?Crystal size and packing change the true amount. Too much weakens gluten and can cause collapse; too little yields tough bakes.
Does powdered sugar behave differently?Yes. It contains starch and compacts drastically. Always weigh for frostings and shortcrusts.

How sugar impacts volume and color

Powdered sugar (GI ) caramelizes, holds moisture, and impacts browning. Type: .

Storage & tools

  • Store in a cool, dry pantry (under 21 °C / 70 °F) away from direct sunlight.
  • Use airtight containers to keep humidity out — dry ingredients gain 1–2 % mass in humid air.
  • Rotate stock: first in, first out, even when the product looks unchanged.
  • Check best-by dates; potency can fade before the product looks old.

Extremely sensitive to humidity. Store in an airtight container. If it hardens, blend it back to a powder, but always sift before using in frostings.

Sources: CDC · FDA

FAQ

Why can't I substitute powdered sugar for granulated sugar in cakes?
Powdered sugar contains 3% cornstarch, which absorbs liquid differently, making batters drier. Also, because it's so fine, it doesn't create the necessary air pockets when creamed with butter, resulting in a dense, heavy cake.
Can I make caramel with powdered sugar?
No. The cornstarch (anti-caking agent) burns at the high temperatures required for caramelization before the sugar melts properly, leaving you with a burnt, cloudy mess instead of clear amber caramel.

Similar ingredients