Concrete Bags Formula:
From: | To: |
Definition: This calculator estimates the number of concrete bags needed from Lowe's based on the volume required and the yield per bag.
Purpose: It helps DIYers and contractors determine how many 80-lb concrete bags to purchase for their projects.
The calculator uses the formula:
Where:
Explanation: The total volume is divided by the yield per bag to determine how many bags are required.
Details: Proper calculation prevents project delays from insufficient materials and avoids unnecessary spending on excess bags.
Tips: Enter the volume needed in cubic feet and the yield per bag (default 0.6 ft³ for 80-lb bags). All values must be > 0.
Q1: Why is the default yield 0.6 ft³?
A: This is the standard yield for an 80-pound bag of concrete mix from Lowe's.
Q2: What if I'm using different size bags?
A: Adjust the yield value (e.g., 0.45 ft³ for 60-lb bags, 0.9 ft³ for 120-lb bags).
Q3: Why does the result round up?
A: Concrete must be mixed in whole bags, so we always round up to ensure you have enough material.
Q4: How do I find the volume needed?
A: Use our Concrete Volume Calculator or multiply length × width × depth (in feet).
Q5: Should I buy extra bags?
A: It's recommended to purchase 10% more than calculated to account for spillage or errors.