Conversion Tools

Concrete Unit Conversion Calculators — Concrete-Depot.com
Unit Conversion Calculators

Convert any concrete unit instantly

7 free conversion calculators for cubic yards, cubic feet, cubic meters, square feet, PSI to MPa, bags to yards, and density — instant results in both imperial and metric.

7 Free Tools
Volume, Pressure & Density
Imperial to Metric
Instant Results

Concrete Unit Conversion Calculators

All 7 conversion calculators — click any card to open the tool.

Pick the right converter for your task

Match your conversion need to the correct tool in this category.

What are you converting? Best tool to use Open tool
Project dimensions to cubic yards for ordering Cubic yard calculator — enter L × W × D to get yards instantly Open
Cubic yards to cubic feet (or reverse) Yards to feet converter — plus bag count equivalent for 60 and 80 lb bags Open
Square footage and thickness to cubic yards Sq ft to cubic yards — area plus slab depth gives exact order volume Open
Concrete strength from PSI to MPa PSI to MPa converter — bidirectional, covers 2500–8000 PSI range Open
Number of bags to total cubic yards Bags to yards converter — 40, 60, and 80 lb bag sizes all supported Open

Related calculator categories

Conversions feed into every other part of a concrete project — explore the full toolset.

Unit errors cost money — get them right first time

Ordering in cubic feet when your supplier quotes in cubic yards is a common and expensive mistake. Our converters eliminate it.

Every concrete unit covered

From cubic yards to cubic meters, PSI to MPa, bags to yards — every unit conversion a concrete project requires is in one place, not scattered across different sites.

Bidirectional conversions

Every converter works in both directions — enter yards to get feet, or enter feet to get yards. No need to bookmark separate tools for each direction.

Construction-grade precision

Results are accurate to the decimal places that matter for ordering and specification — not rounded to whole numbers that cause short pours or wasted material.

Use the cubic yard calculator to size your order, cross-check with the bags to yards converter if mixing small sections by hand, and verify spec strength with the PSI to MPa converter when working from international drawings.

Common concrete unit conversion questions

Fast answers to the conversions that trip people up most often.

One cubic yard equals exactly 27 cubic feet (3 ft × 3 ft × 3 ft). This is the single most important conversion in concrete work — ready-mix is ordered in cubic yards, while dimensions are typically measured in feet and inches. To convert cubic feet to cubic yards, divide by 27. To convert cubic yards to cubic feet, multiply by 27. Use the cubic yards to cubic feet converter to do this instantly without the mental math on site.
Multiply your area in square feet by the slab thickness in feet, then divide by 27. For example, a 500 sq ft patio at 4 inches (0.333 ft) thick: 500 × 0.333 = 166.7 cubic feet ÷ 27 = 6.17 cubic yards. A quick shortcut: for a 4-inch slab, divide square footage by 81. For a 6-inch slab, divide by 54. The square feet to cubic yards calculator handles any thickness automatically.
PSI (pounds per square inch) is the US standard for concrete compressive strength. MPa (megapascals) is the metric equivalent used in Canada, Europe, Australia, and international specifications. The conversion factor is: 1 MPa = 145.04 PSI. Common equivalents: 3000 PSI = 20.7 MPa, 4000 PSI = 27.6 MPa, 5000 PSI = 34.5 MPa. Use the PSI to MPa converter when working from international structural drawings or specifying mix strength for imported equipment.
One cubic yard requires approximately 45 × 60 lb bags or 34 × 80 lb bags. For 40 lb bags, you need about 67 bags per cubic yard. These figures assume standard bag yield — always verify against the yield printed on the specific bag product, as yields vary slightly between manufacturers. The bags to cubic yards converter calculates exact totals for any bag size and quantity, including a 10% waste buffer.
One cubic meter equals 1.308 cubic yards. To convert cubic meters to cubic yards, multiply by 1.308. To convert cubic yards to cubic meters, multiply by 0.7646. For example, 5 cubic meters = 6.54 cubic yards. This conversion comes up when working from metric plans or ordering from suppliers who quote in metric. Use the cubic meters to cubic yards converter for bidirectional results without manual calculation.