Industrial Calculators for Energy, Water & Manufacturing

Free professional calculators for factories, engineers and plant managers. Calculate electricity cost, OEE, production capacity, water flow, power factor and more.

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Trusted by plant engineers across India

💰 Cost Calculators

Calculate running cost of motors, diesel generators and compressed air systems in your factory.

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Cost

Motor Running Cost

Calculate electricity cost of running any motor per hour, day and month
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Cost

DG Running Cost

Calculate diesel generator fuel cost per hour, day and month
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Cost

Compressed Air Cost

Calculate compressor running cost and hidden air leakage losses

⚡ Energy Calculators

Calculate electricity cost, power factor, motor energy and more for your factory.

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Energy

Electricity Cost Calculator

Calculate kWh cost for any machine or entire plant in ₹
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Energy

Monthly Energy Calculator

Estimate monthly energy consumption from connected load
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Energy

Power Factor & Capacitor kVAR

Find the capacitor size needed to correct your power factor
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Energy

Motor Energy Cost Calculator

Calculate running cost of any electric motor per month
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Energy

HP to kW Converter

Instantly convert horsepower to kilowatts and vice versa
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Energy

DG Fuel Consumption Calculator

Estimate diesel generator fuel usage and running cost
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Energy

Solar Generation & Savings

Estimate solar panel output and monthly bill savings
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Energy

Transformer Loading %

Check if your transformer is overloaded or underutilized

💧 Water Calculators

Flow rate, tank filling, pump sizing and water cost tools for industrial plants.

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Water

Flow Rate Converter

Convert between LPM, m³/hr, GPM and other flow units
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Water

Tank Filling Time Calculator

Calculate how long to fill or drain a tank at a given flow rate
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Water

Pump Power Requirement

Calculate the power needed for a pump based on flow and head
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Water

Water Consumption Cost

Estimate monthly water cost for your factory or facility
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Water

Pipe Velocity Calculator

Find flow velocity in a pipe from flow rate and diameter
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Water

Water Leakage % Calculator

Estimate your system's water leakage percentage and loss

🏭 Manufacturing Calculators

OEE, takt time, production capacity and efficiency tools for plant managers.

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Manufacturing

OEE Calculator

Calculate Overall Equipment Effectiveness — Availability × Performance × Quality
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Manufacturing

Production Capacity Calculator

Find your factory's maximum output per shift or per day
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Manufacturing

Takt Time Calculator

Calculate the required production rate to meet customer demand
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Manufacturing

Cycle Time Calculator

Calculate actual cycle time from production output data
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Manufacturing

Downtime Production Loss

Estimate production and revenue lost due to machine downtime
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Manufacturing

Capacity Utilization Calculator

Measure how efficiently you are using your production capacity

📚 Industrial Guides & Articles

In-depth guides written for plant engineers, factory managers and manufacturing teams.

Lean

What is Lean Manufacturing?

5 principles, 8 wastes, key tools and how to start implementing lean in your factory.
Lean

5S Methodology: Complete Guide

Sort, Set in Order, Shine, Standardize, Sustain — with implementation steps and audit scoring.
Manufacturing

What is OEE?

Formula, examples, industry benchmarks and how to improve your OEE score.
Manufacturing

Takt Time vs Cycle Time

The key difference, when to use each, and how they affect production planning.
Energy

12 Ways to Reduce Factory Electricity Bill

Proven methods with savings estimates — from zero-cost scheduling to VFDs and solar.
Energy

How to Calculate Electricity Cost for a Factory

Step-by-step formula, demand charges, power factor and real-world examples.
Energy

What is Power Factor?

Why it matters, what causes poor PF, and how to correct it with capacitor banks.
Maintenance

What is Preventive Maintenance?

Types, benefits, key metrics and a step-by-step PM plan for your factory.
Energy

HP to kW Conversion Guide

Formula, full conversion table, and why nameplate HP ≠ actual electricity drawn.
Manufacturing

How to Calculate Production Capacity

Design capacity vs effective capacity, formulas, examples and bottleneck analysis.
Water

Water Flow Rate: How to Calculate & Convert

LPM, m³/hr, GPM conversions, tank fill time and pipe sizing for industrial systems.
Energy

Electricity Cost Formula Explained

Practical guide to understanding your factory's electricity bill component by component.

About CalcNetra

CalcNetra provides free professional industrial calculators designed for manufacturing plants, process industries and engineering teams across India and worldwide. Our tools help plant managers and engineers estimate electricity costs, evaluate production efficiency, optimize water systems, and make data-driven operational decisions — without needing expensive software.

Every calculator is built for real-world industrial use — covering energy, water, manufacturing efficiency, and lean operations. Use our in-depth guides to understand the theory, then apply the calculators to your actual data.

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