Concrete Cube Test Result
Compressive strength from cube load with IS 456 acceptance check.
Inputs
Results
Enter your values, then press Calculate Now to evaluate the output.
Guide — Concrete Cube Test Result
The concrete cube testing calculator below follows standard Indian construction practice and the relevant IS-code conventions. Enter the site dimensions exactly as measured, press Calculate Now, then refine the quantities line by line in the live sheet before you export.
Compressive strength is the failure load divided by the loaded cross-sectional area. A 150 mm cube has 22 500 mm² of area, so a 700 kN failure corresponds to 31.1 MPa.
IS 456 accepts a grade when the mean of any four consecutive test results exceeds fck + 0.825 times the established standard deviation (or fck + 4 MPa, whichever is greater), and no individual result falls more than 4 MPa below fck.
Seven-day results are an early indicator only — expect around 65% of the 28-day strength for OPC concrete. Never reject a batch on a 7-day result alone; wait for the 28-day set or run accelerated curing tests.
Treat every output as an indicative pre-tender estimate. Site conditions, wastage allowances, specification changes and local market rates all move the final figure, so validate against your drawings and approved rate analysis before procurement.
Master Measurement Sheet
| Sr. No. | Description | Unit | NOS 1 | NOS 2 | L | B | D | QTY | Action |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1.000 |
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About the Concrete Cube Test Result
This tool is built for site engineers, quantity surveyors, contractors and property investors who need dependable numbers fast. Every input is reactive — changing a single field instantly recomputes the full output set, so you can run sensitivity checks on dimensions, grades and rates before committing to an estimate.
Keep unit consistency in mind: metric inputs (metres, square metres, cubic metres) produce metric outputs, with imperial and Indian trade units shown alongside where they are commonly used on site.