Industrial Calculator — 40+ Free Engineering Tools
Free industrial calculators for cutting speed, flow rate, pressure drop, material weight, motor horsepower, OEE, break-even analysis, safety stock, and more. Formulas, examples, and worked calculations — no signup required.
Loan EMI Calculator
Calculate monthly EMI, total interest, and total repayment for any loan using reducing balance method.
Open calculator →Pipe Volume Calculator
Internal volume of a cylindrical pipe from ID and length.
Open calculator →Tank Capacity Calculator
Volume of a vertical cylindrical tank from diameter and height.
Open calculator →Pump Power Calculator
Hydraulic power and shaft power from flow, head, and efficiency.
Open calculator →Flow Rate Calculator — Pipe Flow, Velocity & Volume (m³/s, L/min)
Calculate volumetric flow rate from pipe diameter and fluid velocity — Q = A × v.
Open calculator →Water Pressure Drop Calculator — Pipe Friction Loss (Darcy-Weisbach)
Calculate pipe pressure drop for water, oil, and gas using Darcy-Weisbach formula.
Open calculator →Electrical Load Calculator
Three-phase active power from voltage, current, and power factor.
Open calculator →Pipe Weight Calculator
Steel pipe weight from OD, wall thickness, length, and density.
Open calculator →Horsepower Calculator — Electric Motor Power (HP to kW, Torque & RPM)
Calculate electric motor horsepower: shaft kW from torque and RPM, or convert HP to kW.
Open calculator →Calculate Weight of Material — Steel, Aluminium, Copper & More
Calculate weight of any material from dimensions and density — steel, aluminium, copper, and more.
Open calculator →Load Calculator — Torque, Force & Mechanical Power (N·m, kW)
Industrial load calculator: compute torque from force and radius, and mechanical power from torque and speed.
Open calculator →Cutting Speed Calculator — Metric RPM & Feed Rate for Machining
Convert cutting velocity to spindle RPM and feed rate for turning, milling, and drilling.
Open calculator →Thermal Expansion Calculator
Calculate linear expansion of materials with temperature change.
Open calculator →Carbon Footprint Calculator
Estimate CO₂ equivalent emissions from energy use, fuel, and travel.
Open calculator →Energy Consumption Tool
Track and project total energy use across multiple equipment items.
Open calculator →Compressed Air Loss Calculator
Calculate energy and cost loss from compressed air leaks.
Open calculator →Solar ROI Calculator
Calculate payback period and returns from a rooftop solar installation.
Open calculator →Fuel Efficiency Calculator
Calculate vehicle or machine fuel efficiency and operating cost per km or per hour.
Open calculator →OEE Calculator
Calculate Overall Equipment Effectiveness from availability, performance, and quality.
Open calculator →Cycle Time Calculator
Calculate production cycle time, takt time, and throughput rate.
Open calculator →Throughput Calculator
Calculate production throughput rate and identify bottleneck constraints.
Open calculator →Capacity Calculator — Production Capacity Planning & Resource Sizing
Calculate production capacity, identify gaps, and size shifts, machines, and headcount.
Open calculator →Inventory Turnover Calculator
Calculate inventory turnover ratio and days inventory outstanding.
Open calculator →Freight Cost Calculator
Estimate road freight cost from distance, weight, and rate per tonne-km.
Open calculator →Container Loading Tool
Calculate how many units fit in a shipping container by volume and weight.
Open calculator →Warehouse Space Calculator
Calculate required warehouse storage area from inventory volume and racking configuration.
Open calculator →Lead Time Estimator
Estimate total procurement or production lead time across supply chain stages.
Open calculator →Safety Stock Calculator
Calculate safety stock level from demand variability and lead time.
Open calculator →Molarity Calculator
Calculate solution molarity, moles, and mass for chemical preparation.
Open calculator →Concrete Volume Calculator
Calculate concrete volume required for slabs, footings, and columns.
Open calculator →Cooling Load Calculator
Estimate HVAC cooling load for an industrial or commercial space.
Open calculator →Cable Size Calculator
Select cable size from load current, voltage, and allowable voltage drop.
Open calculator →Unit Converter
Convert between units of length, weight, volume, temperature, pressure, and more.
Open calculator →Currency Converter
Convert between major currencies using live or reference exchange rates.
Open calculator →Time Zone Tool
Convert times across global time zones for international project coordination.
Open calculator →Production Cost Calculator
Calculate unit production cost from materials, labour, and overheads.
Open calculator →Break-Even Calculator
Find the break-even volume and revenue from fixed costs, variable cost, and selling price.
Open calculator →ROI Calculator
Calculate return on investment, payback period, and net gain.
Open calculator →Energy Cost Calculator
Estimate electricity cost from power consumption, hours, and tariff rate.
Open calculator →Downtime Cost Calculator
Calculate the financial cost of unplanned machine or line downtime.
Open calculator →Margin Calculator
Calculate profit margin, markup, and selling price from cost.
Open calculator →Want the full suite? Browse all tools