Concrete Calculator

Calculate concrete quantity, cement, sand, and aggregate for any grade (M10 to M40). Supports slabs, beams, columns, and footings with cost estimation per IS 456.

Concrete Grade

Mix Ratio1 : 1.5 : 3

Strength20 MPa

W/C Ratio0.5

Wastage (%)

Structure Elements

Element 1

Length (m)

Width (m)

Thickness (m)

Quantity

VOL: 2.500 m³

Concrete Requirement

2.50

Wet Volume (m³)

Cement Bags

Sand (CFT)

Aggregate (CFT)

Concrete ESG Analysis

Failed to load ESG metrics

Material Quantity

Material	Volume (m³)	Weight (kg)	Quantity	Est. Cost (₹)
Cement (OPC 53)	0.735	1058	22 bags	₹8,360
River Sand	1.103	1764	39 CFT	₹1,946.723
Coarse Aggregate	2.205	3308	78 CFT	₹4,282.79
Water	-	-	529 L	-
Total Material Cost (Site Mix)				₹14,589.513
RMC Cost (Ready Mix)				₹13,750

Detailed Volume Calculation

Wet Volume2.500 m³

Dry Factor× 1.54

Wastage (5%)+0.193 m³

Total Dry Volume4.043 m³

Total Weight6.00 tonnes

Truck Loads (6m³)1 trucks

Mixer Batches5 batches

Code Reference: IS 456 & IS 10262

Concrete grades and mix proportions as per IS 456:2000 (Plain and Reinforced Concrete). Mix design procedure follows IS 10262:2019 (Concrete Mix Design). Volume calculations use dry volume factor of 1.54 as per standard practice.

IS 456 - RCC Code IS 10262 - Mix Design

Need a Professional Report?

Download the detailed breakdown including mix ratios and material costs.

Scaling Beyond Just Concrete Calculator

NIYAMX CO-PILOT
POWERED BY AI.

Our professional platform helps you generate code-compliant reports, verify thousands of municipal bylaws, and automate your entire AEC documentation workflow.

START 14-DAY FREE TRIAL

PLATFORM CAPABILITIES

Code Intelligence

Instant citations from NBC 2016 & State DCRs

Plan Verification

Automated checks for architectural layouts

Export Instruments

Professional PDF & DXF report generation

Version Control

Track code changes and city-wise updates

Trusted by 5,000+ Architects & Developers Across India

What is Concrete Calculator?

Calculate concrete quantity, cement, sand, and aggregate for any grade (M10 to M40). Supports slabs, beams, columns, and footings with cost estimation per IS 456.

What is Concrete Calculation?

Concrete calculation involves determining the exact quantities of cement, sand, coarse aggregate, and water required to produce a specific volume of concrete. The calculation depends on theconcrete grade(M10, M15, M20, M25, etc.) which defines the mix proportions and target compressive strength.

In India, concrete grades and mix design follow IS 456:2000 for structural design and IS 10262:2019 for mix proportioning. The "M" in concrete grade stands for "Mix" and the number represents the characteristic compressive strength in MPa at 28 days.

Concrete Mix Ratios (IS 456)

Grade	Mix Ratio (C:S:A)	Strength	Cement/m³	Application
M10	1:3:6	10 MPa	34 bags	Leveling, PCC
M15	1:2:4	15 MPa	49 bags	Foundations
M20	1:1.5:3	20 MPa	62 bags	Slabs, beams
M25	1:1:2	25 MPa	85 bags	RCC Structures
M30	Design Mix	30 MPa	105 bags	High strength

About the Concrete Calculator

The Concrete Calculator is a professional-grade architectural utility designed for building projects in India. It provides high-precision calculations and visualizations to aid in decision-making and technical compliance.

Technical Standards

IS 456:2000IS 10262:2019NBC 2016

Key features include support for PDF, CSV exports and integration with IS Code standards. Volume calculations typically use a dry volume factor of 1.54 (54% increase) to account for bulking of sand and void filling.

Scaling with NiyamX Construction Suite

Quantity estimation is the backbone of project budgeting. NiyamX simplifies the entire procurement workflow:

Automated Indents

Generate material indents directly from your calculations for procurement.

Cost Variations

Track market rate fluctuations for cement/steel and update budgets in real-time.

Bank-Ready Compliance

NIYAMX BOQ
INFRASTRUCTURE LAYER.

Transform your drawings into 14-chapter detailed Bill of Quantities. SBI-compliant, DSR-synced, and ready for technical sanction within minutes.

OPEN BOQ PLATFORM

PLATFORM CAPABILITIES

14-Chapter Structure

Comprehensive engineering breakdown

DSR Synchronization

Latest scheduled rates for 100+ cities

Bank Annexures

Auto-generated Annexures A, B, C, & D

CAD Extraction

Neural measurement extraction from plans

Trusted by 5,000+ Architects & Developers Across India

How to Calculate Concrete Volume

Step-by-step guide to calculating concrete quantity (m³) for structural elements like slabs, beams, and columns.

Measure Dimensions

Measure the Length (L), Width (B), and Depth/Thickness (D) of the structural number in meters. For example, a slab might be 10m x 12m x 0.15m.

Calculate Wet Volume

Multiply L × B × D to get the wet volume in cubic meters (m³). Example: 10 × 12 × 0.15 = 18 m³.

Convert to Dry Volume

Multiply the wet volume by 1.54 to account for shrinkage and bulking of sand. dry_volume = 18 × 1.54 = 27.72 m³.

Apply Mix Ratio

Using the mix ratio (e.g., M20 is 1:1.5:3, total parts = 5.5), calculate individual material volumes. Cement = (1/5.5) × Dry Volume.

Convert to Bags

Convert cement volume to bags (1 bag = 0.035 m³ or 50kg). Sand and aggregate are typically measured in CFT (cubic feet) or m³.

Common Questions

1
How many bags of cement are required for 1 cubic meter of M20 concrete?

For M20 grade concrete (1:1.5:3 ratio), approximately 8 bags (400 kg) of cement are required for 1 cubic meter. Along with this, you need 0.45 m³ (16 CFT) of sand and 0.9 m³ (32 CFT) of coarse aggregate.

2
What is the difference between wet volume and dry volume of concrete?

Wet volume is the actual volume of fresh concrete (L × B × H). Dry volume is 1.54 times the wet volume because when concrete materials (cement, sand, aggregate) are mixed with water, they fill the air voids and compact. Hence, to get 1 m³ wet concrete, you need 1.54 m³ of dry materials.

3
What is the mix ratio for M25 grade concrete?

The nominal mix ratio for M25 grade concrete is 1:1:2 (Cement:Sand:Aggregate). However, for structural work, design mix as per IS 10262 is recommended. M25 has a characteristic compressive strength of 25 MPa (N/mm²) at 28 days.

4
How much concrete is required for a 1000 sq ft slab?

For a 1000 sq ft (93 sqm) slab with 5 inch (125mm) thickness, the wet volume is 93 × 0.125 = 11.625 m³. For M20 concrete, this requires approximately 93 bags of cement, 186 CFT of sand, and 372 CFT of aggregate (including 5% wastage).

RECOMMENDED INSTRUMENTS

Related Free Tools

Need specific municipal DCR data?

Get real-time updates for 100+ cities in India with NiyamX Enterprise.

Contact Sales