How Much Water per Bag of Concrete?
An 80 lb bag of Quikrete Concrete Mix takes about 6 pints of water to start and up to 9 pints (data sheet Table 2). Water differs by product and bag size; the table lists what each maker publishes.
| Product | Bag | Water (maker's figure) | Source |
|---|---|---|---|
| Quikrete Concrete Mix | 40 lb | about 3 pt to start, up to 4.5 pt | Quikrete |
| Quikrete Concrete Mix | 50 lb | about 3.5 pt to start, up to 5.5 pt | Quikrete |
| Quikrete Concrete Mix | 60 lb | about 4 pt to start, up to 7 pt | Quikrete |
| Quikrete Concrete Mix | 80 lb | about 6 pt to start, up to 9 pt | Quikrete |
| Quikrete Concrete Mix | 90 lb | about 7 pt to start, up to 10 pt | Quikrete |
| Quikrete Fast-Setting | 50 lb | about 4 pt when mixed (below 5 pt); about 1 gal per bag when poured dry into a post hole | Quikrete |
| Quikrete Fast-Setting | 60 lb | the amount printed on the bag (the data sheet lists water for 50 lb bags only) | Quikrete |
| Sakrete High Strength | 40 lb | about 1.75 qt to start | Sakrete |
| Sakrete High Strength | 60 lb | about 2.5 qt to start | Sakrete |
| Sakrete High Strength | 90 lb | about 4.25 qt to start | Sakrete |
| Sakrete 5000 Plus | 50 lb | about 2.1 qt to start | Sakrete |
| Sakrete 5000 Plus | 60 lb | about 2.5 qt to start | Sakrete |
| Sakrete 5000 Plus | 80 lb | about 3.5 qt to start | Sakrete |
| Sakrete Maximizer | 40 lb | about 0.75–1 gal to start | Sakrete |
| Sakrete Maximizer | 80 lb | about 1.5–2 gal to start | Sakrete |
FAQ
How much water for an 80 lb bag of concrete?
Quikrete's data sheet: start with about 6 pt and expect up to 9 pt per 80 lb bag of Concrete Mix. Sakrete 5000 Plus lists 3.5 qt for 80 lb.
How much water for a bag of fast-setting concrete in a post hole?
Quikrete's Fast-Setting data sheet: about 1 gal per 50 lb bag poured dry into the hole, depending on soil conditions.
Sources
- Quikrete: QUIKRETE Concrete Mix (No. 1101) data sheet · fetched and reviewed 2026-11-10
- Quikrete: QUIKRETE Fast-Setting Concrete Mix (No. 1004-50) data sheet · fetched and reviewed 2026-11-10
- Sakrete: Sakrete High Strength Concrete Mix technical data sheet · fetched and reviewed 2026-11-10
- Sakrete: Sakrete 5000 Plus Concrete Mix technical data sheet · fetched and reviewed 2026-11-10
- Sakrete: Sakrete Maximizer Concrete Mix technical data sheet · fetched and reviewed 2026-11-10
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Volumes only. ConcreteMath calculates volumes, bag counts, weights and your own cost figures. It gives no structural or engineering advice and never sizes footings, piers, slabs or rebar: those come from your plans, an engineer or your local building department. Bag counts are estimates from each maker's published yield; actual use varies with hole shape, uneven ground, waste and mixing. Bulk weights are published ranges; your supplier's figure wins.