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All Purpose Flour — Lb in Cups
1 lb of all purpose flour equals 3.78 ( ~ 3 3/4) cups*
About all purpose flour measurements
All-purpose flour settles in the bag, so weight is far more reliable than the cup. Using a reference density of about 0.51 g/ml, a US cup is roughly 120 g when spooned and leveled — but plunging the cup in to scoop compacts the flour and can add 15–20% more.

Lb of all purpose flour equivalent in cups?
FAQs on all purpose flour weight to volume conversion
1 lb of all purpose flour equals how many cups?
1 lb of all purpose flour is equivalent 3.78 ( ~ 3 3/4) cups.
How much is 3.78 cups of all purpose flour in lb?
3.78 cups of all purpose flour equals 1 lb.
Lb to Cups of All purpose flour Conversion Chart
Note: Fractions are rounded to common recipe fractions (1/8, 1/4, 1/3, 1/2, 2/3, 3/4…). Values are rounded to 3 significant figures.
| Lb to cups of All purpose flour | |
|---|---|
| 0.236 ( ~ 1/4 ) cups | |
| 0.473 ( ~ 1/2 ) cups | |
| 0.945 ( ~ 1 ) cups | |
| 1.26 ( ~ 1 1/4 ) cups | |
| 1.89 ( ~ 2 ) cups | |
| 2.52 ( ~ 2 1/2 ) cups | |
| 2.84 ( ~ 2 3/4 ) cups | |
| 1 lb | 3.78 ( ~ 3 3/4 ) cups |
| 1 | 4.02 ( ~ 4 ) cups |
| 1 | 4.25 ( ~ 4 1/4 ) cups |
| 1 | 4.73 ( ~ 4 3/4 ) cups |
| 1 | 5.04 ( ~ 5 ) cups |
| 1 | 5.67 ( ~ 5 2/3 ) cups |
| 1 | 6.3 ( ~ 6 1/3 ) cups |
| 1 | 6.62 ( ~ 6 2/3 ) cups |
| 2 lb | 7.56 ( ~ 7 1/2 ) cups |
| 2 | 7.8 ( ~ 7 3/4 ) cups |
| 2 | 8.04 ( ~ 8 ) cups |
| 2 | 8.51 ( ~ 8 1/2 ) cups |
| 2 | 8.82 ( ~ 8 3/4 ) cups |
| 2 | 9.45 ( ~ 9 1/2 ) cups |
| 3 lb | 11.3 ( ~ 11 1/3 ) cups |
| 4 lb | 15.1 ( ~ 15 1/8 ) cups |
| 5 lb | 18.9 ( ~ 19 ) cups |
| 6 lb | 22.7 ( ~ 22 2/3 ) cups |
| 8 lb | 30.3 ( ~ 30 1/4 ) cups |
| 10 lb | 37.8 ( ~ 37 3/4 ) cups |
References:
Weight to Volume Conversions - Recipes
A note on cooking ingredients measurements
Notes: results are rounded (by default) to 3 significant figures. Cooking conversions use standard ingredient densities — the exact weight varies slightly with the brand and how tightly the ingredient is packed ☺.