PH Construction Calculator

🧱

CHB / Masonry

Blocks, mortar, cement, sand

🏗️

Concrete Mix

Cement, sand, gravel per cu.m.

⚙️

Rebar

Pieces, weight, cutting lengths

🪣

Plastering

Cement & sand for wall plaster

🪜

Stair / Ramp

PD 1096 & BP344 compliant

🎨

Paint

Coverage, coats, gallons needed

🔲

Tile / Flooring

Tiles, adhesive, grout

🪵

Board Feet

Lumber computation

📐

Unit Converter

Construction conversions

🧱 CHB / Masonry Estimator

Compute CHB pieces, mortar, cement & sand per wall

Please fill in Wall Length and Wall Height.

CHB Size

Wall Length (m) *

Wall Height (m) *

Opening Deductions

No. of Doors

Door Size (sq.m.)

No. of Windows

Window Size (sq.m.)

Waste Factor (%)

Ref: Fajardo Table 1-7 (CHB per sq.m.)
Standard door: 0.90×2.10m = 1.89 sq.m. | Window: 1.20×1.20m = 1.44 sq.m.

🏗️ Concrete Mix Estimator

Cement, sand & gravel per volume of concrete

Please fill in the Volume of Concrete.

Concrete Class / Mix Ratio

Volume of Concrete (cu.m.) *

Waste Factor (%)

Ref: Fajardo Table 1-3 (Concrete Proportions)

⚙️ Rebar Calculator

Pieces, weight & total length of reinforcing bars

Please fill in Total Length Needed.

Bar Diameter

Total Length Needed (meters) *

Standard Bar Length (m)

Waste / Lap Factor (%)

Unit weight: kg/m = d²/162 (standard formula)

🪣 Plastering Estimator

Cement & sand for interior/exterior wall plastering

Please fill in Wall Length and Wall Height.

Wall Length (m) *

Wall Height (m) *

Plaster Thickness

Sides to Plaster

Mix Ratio

Opening Deductions

No. of Doors

Door Size (sq.m.)

No. of Windows

Window Size (sq.m.)

Waste Factor (%)

Ref: Fajardo (Plastering Works)
Cement density: 1,440 kg/cu.m. | Standard bag: 40kg

🪜 Stair / Ramp Calculator

PD 1096 Rule VII & VIII, BP344

Please fill in the required fields.

Calculate

Floor-to-Floor Height (m) *

Riser Height (mm)

Tread Depth (mm)

Stair Width (m)

Ref: PD 1096 Rule VII (Stairs), BP344 (Accessibility/Ramps)

🎨 Paint Estimator

Compute gallons needed for walls & ceilings

Please fill in Surface Area.

Surface Area (sq.m.) *

Number of Coats

Paint Type

Deduct Openings (doors/windows sq.m.)

Coverage based on typical Philippine paint brands

🔲 Tile / Flooring Estimator

Number of tiles, adhesive & grout needed

Please fill in Floor/Wall Area.

Floor/Wall Area (sq.m.) *

Tile Size

Waste Factor (%)

Adhesive: ~5kg/sq.m. | Grout: ~0.5kg/sq.m. (typical)

🪵 Board Feet Calculator

Lumber computation — board feet & total cost

Please fill in Thickness, Width, and Length.

Thickness (inches) *

Width (inches) *

Length (feet) *

No. of Pieces

Price per Board Foot (₱)

BF = (T × W × L) / 12 — standard board feet formula