Construction Material Calculator Nepal
Estimate cement, sand, aggregate, bricks, and steel requirements for your construction project in Nepal.
Get a quick material estimate based on your project dimensions and selected construction work.
Concrete Material Calculator
1 m³ = 35.3147 cu ft • Cement bag assumption: 50 kg (0.0347 m³). Custom mix as cement:sand:aggregate.
Calculation assumptions
Cement bag: 50 kg (0.0347 m³) • Dry factor concrete: 1.54 • Plaster dry: 1.27 • Brick: 230×110×55 mm, mortar 10 mm, ratio 1:6 • Steel: d²/162 kg/m • Wastage: concrete/brick/plaster 5%, flooring 7%, steel 3% (editable) • 1 m³ = 35.3147 cu ft • All editable in src/data/construction/construction-material.js
Update assumptions centrally; calculations read only from config.
Your material estimate
Enter dimensions and click Calculate Materials.
All results include wastage % shown in results.
Estimate
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Quick conversion
1 m³ = 35.3147 cu ft • 1 m = 3.28084 ft • 1 sq m = 10.7639 sq ft
Steel: kg/m = d²/162 (d in mm)
What materials are commonly used in house construction in Nepal?
- Cement: binder for concrete, mortar and plaster (commonly 50 kg bags).
- Sand: fine aggregate for concrete and mortar.
- Aggregate: coarse stone for concrete strength.
- Bricks: wall construction; mortar fills joints.
- Steel: reinforcement in beams, columns, slabs and foundations.
- Water: for mixing and curing.
How many cement bags are required for construction?
It depends on concrete volume and mix, plus brickwork and plaster volumes and their mortar ratios. Use the specific calculators above — concrete for slabs/beams/columns, brickwork for walls, plaster for finishing — and add their cement bags for a total. The full-project tab does this approximately from built-up area.
How is construction material quantity calculated?
Volume or area → dry volume (for concrete/plaster) → split by mix ratio → divide cement volume by bag volume (0.0347 m³ for 50 kg) → apply wastage. Bricks from wall volume divided by brick+Mortar size. Tiles from floor area divided by tile area. Steel from length × d²/162.
Frequently Asked Questions
How do I calculate construction materials for a house in Nepal?
Measure your project, pick the work type (concrete, brickwork, plaster, flooring or steel), enter dimensions and mix/ratio, then calculate. The calculator converts units, applies dry-volume factors and wastage, and shows cement bags, sand, aggregate, bricks or steel weight. For a full house, use Full Project Estimate as a preliminary planning figure and refine with structural drawings.
How many cement bags are required for 1 cubic meter of concrete?
It depends on the grade. For example at dry factor 1.54, M15 (1:2:4) needs about 6.4 bags per m³ and M20 (1:1.5:3) about 8.0 bags per m³ (50 kg bags). The calculator shows the exact estimate for your grade, volume and wastage.
How much sand and aggregate are required for concrete?
From the dry volume split by mix ratio. At M15 1:2:4, 1 m³ wet concrete needs roughly 0.44 m³ sand and 0.88 m³ aggregate plus wastage. Results are shown in both m³ and cu ft.
How many bricks are required per square foot?
About 4.5 bricks per sq ft for a 9-inch (230 mm) wall using standard Nepal bricks (230×110×55 mm) with 10 mm mortar, before wastage. For half-brick walls it is less. The brickwork calculator uses wall volume and brick + mortar size to estimate more accurately.
How much steel is required for a house?
Steel depends on structural design, not just built-up area. As a very rough planning ballpark, 1.8–2.8 kg per sq ft is common for residential frames, but the only correct figure is from the structural drawings and bar bending schedule. Use the steel calculator with the engineer’s bar list for an accurate weight.
How much wastage should I allow for construction materials?
Common planning allowances are 5% for concrete, brickwork and plaster, 5–10% for flooring/tiles and 2–3% for steel. The calculator defaults to these and lets you adjust. Actual wastage depends on handling, cutting, site conditions and workmanship.
Is this construction material calculator accurate?
It is a planning estimate using centralized assumptions for bag weight, mix ratios, brick size, mortar thickness and dry factors. Actual quantities vary with drawings, mix design, compaction, brick dimensions, site conditions and wastage — treat results as a guide.
Can I use this calculator for structural design?
No. It does not design beams, columns, slabs or reinforcement. For structural safety and code compliance, consult a qualified civil/structural engineer.