Convert grams of flour to cups, or cups to grams, for all-purpose, bread, cake, self-raising or whole wheat flour in US or metric cups.

Custom flour weight
Blank uses the selected flour reference. Enter a measured value to override it; the method factor still applies.

Assumptions Assumptions
  • Conversions are weight-to-volume for flour using typical kitchen densities; results are estimates.
  • Base grams per US cup (spoon & level): AP = 120 g; Bread = 120 g; Unbleached cake = 120 g; Self-raising = 113 g; Pastry = 106 g; Whole wheat = 113 g.
  • Reference factor: spoon & level = 1.00. Scooped/dipped = 1.10 and sifted = 0.90 are illustrative assumptions retained from the original tool, not universally calibrated factors.
  • Unit standards: US cup = 236.5882365 mL; Metric cup = 250 mL; 1 oz = 28.349523125 g.
  • Humidity, brand, and technique can change actual packing and therefore grams per cup.
When to Use This Calculator
  • Converting recipes written in grams/ounces to cups when a scale isn’t available. Default flour weights follow the King Arthur Baking ingredient chart; use the recipe’s own weight when supplied.
  • Standardizing recipe cards across US and metric cup sizes.
  • Estimating substitutions when switching flour types or measuring methods.
Input Definitions
  • Flour Type — sets the baseline grams per US cup.
  • Measuring Method — adjusts density: scooped packs more; sifted packs less.
  • Flour Weight — enter in grams or ounces.
  • Cups — choose US cup (236.5882365 mL) or Metric cup (250 mL).
  • Conversions — cups = grams ÷ (g per cup); grams = cups × (g per cup).

Flour Grams to Cups Formula

The following formulas convert flour between weight and volume; the grams-per-cup value depends on the flour type, measuring method, and chosen cup size.

cups = (grams) / (g per cup)\ grams = cups × g per cup
  • US cup = 236.5882365 mL
  • Metric cup = 250 mL
  • Base grams per US cup (spoon & level): AP = 120 g; Bread = 120 g; Unbleached cake = 120 g; Self-raising = 113 g; Pastry = 106 g; Whole wheat = 113 g
  • Illustrative method assumptions: Scooped × 1.10; Sifted × 0.90. Actual packing varies.
  • 1 oz = 28.349523125 g

Flour Grams to Cups Conversion Table

Grams to Cups (All-Purpose, Spoon & Level, US cup)
Grams Cups (US)
150.125
300.250
450.375
600.500
750.625
900.750
1050.875
1201.000
1501.250
1801.500
2101.750
2402.000
2702.250
3002.500
3302.750
3603.000
4203.500
4804.000
* Based on all-purpose flour, spoon & level: 1 US cup ≈ 120 g (density ≈ 0.507 g/mL).

How do you convert grams to cups of flour? Divide grams by the grams-per-cup for your flour and measuring method (e.g., AP spoon & level ≈ 120 g per US cup: cups = grams ÷ 120).

How do you convert cups to grams of flour? Multiply cups by the grams-per-cup for your flour and measuring method (e.g., grams = cups × 120 g for AP spoon & level, US cup).

Example Problem

Convert 300 g of all-purpose flour (spoon & level) to US cups.

Use the formula: cups = grams ÷ (g per cup).

cups = 300 ÷ 120 = 2.5 cups