Enter the wall length and height to estimate how many 8×8×16 concrete blocks to buy.
Saved projects
Build your takeoff
Select a component to see its dimensions. Add each separate pour once.
Dimensioned view · cutouts deducted by area
Added once after all measured pours are combined. Use the allowance agreed for your job.
Check a depth change
Uneven ground can change how much you need. Test a deeper slab before calling a supplier.
Changes rectangular and round slabs only. This is a quantity comparison, not a thickness recommendation.
Compare the delivered bill
Same takeoff. Each supplier’s own unit, billing rules and fees.
Enter current quotes in one currency. Tax, pumping, labor and waiting charges are excluded unless included in a fee you enter. No prices are assumed.
Ready-mix 1
Volume fields use this quote’s unit. Zero increment means exact volume. The minimum changes the bill, not the concrete needed.
Ready-mix 2
Volume fields use this quote’s unit. Zero increment means exact volume. The minimum changes the bill, not the concrete needed.
Or use premix bags
Check the actual bag label. Reference yields: QUIKRETE. Dry bag weight is handling weight, not the weight of placed concrete.
Make the supplier call easier
Keep the quantity, project details and open questions in one delivery brief.
Copy the mix requirement from your project specifications or confirm it with your supplier. MeasureDen does not choose a structural design or mix.
Before you confirm delivery
The checklist records your confirmations. It does not certify that a site is safe or ready. Ordering guidance: NRMCA.
Runs entirely in your browser. Nothing you enter is uploaded.
How many blocks per square foot?
A standard 8 × 8 × 16 inch block covers 128 square inches of wall face including its mortar joint — about 0.89 square feet. That works out to 1.125 blocks per square foot. A wall 20 ft long and 4 ft high (80 sq ft) therefore needs 90 blocks before waste. Deduct openings for doors and windows, and add 5–10% for cuts and breakage.