ConstrCalc uses only well-known deterministic conversions between measurement systems. There is no regional adjustment, no fudge factor, no “rounding for round numbers”. This guide documents each constant.
Area
| From | To | Constant |
|---|---|---|
| ft² | m² | × 0.092903 |
| m² | ft² | × 10.7639 |
| ft² | yd² | ÷ 9 |
Volume
| From | To | Constant |
|---|---|---|
| ft³ | m³ | × 0.0283168 |
| m³ | ft³ | × 35.3147 |
Common Construction Units
- Cement — Bags (typically 50 kg or 94 lb). Enter bag price × count.
- Sand / Aggregate — Ton or ft³/m³. Enter per-unit price.
- Steel / Rebar — Kg or ton. Enter per-kg price.
- Bricks — Pieces (Pcs). Enter per-piece price.
- Paint — Gallons or Liters. Enter per-unit price.
ConstrCalc converts your area to ft² / m² / yd² deterministically. It does not convert your prices — the currency you selected controls what your unit rates mean.