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All Calculators
Every free industrial and operations engineering calculator on OpsCalculators.com, grouped by category. Each one is available in English, Spanish and Portuguese. Jump to a category or browse the full list.
Lean Production Supply Chain Quality Control Operations Research Maintenance and Reliability Manufacturing Processes Project Management Engineering Economics Industrial Finance Energy Management Facility Planning Facility Infrastructure Industrial Automation Packaging Engineering Forecasting and Analytics ESG and Compliance
Maintenance and Reliability
- Failure Rate & Reliability Calculator (Exponential)
- FMEA / RPN Calculator (Risk Priority Number & Action Priority)
- MTBF, MTTR & Availability Calculator (Free)
- Preventive Maintenance Calculator (Optimal Replacement Interval)
- System Reliability Calculator (Series, Parallel, k-of-n)
- Weibull Analysis Calculator (Shape, Scale, B10 Life)
Manufacturing Processes
- Cutting Speed, RPM & Feed Rate Calculator (Turning & Milling)
- Injection Molding Cycle Time Calculator (Cooling Time)
- Machining Time & MRR Calculator (Turning & Milling)
- Press & Stamping Force Calculator (Punching Tonnage)
- Sheet Metal Bend Allowance & K-Factor Calculator
- Tool Life Calculator (Taylor’s Equation V·Tⁿ=C)
Project Management
- Contingency Reserve Calculator (EMV) — Risk-Based Project Reserve
- Critical Path Calculator (CPM) — Forward & Backward Pass, Float
- Earned Value Calculator (EVM) — CV, SV, CPI, SPI & EAC
- Estimate at Completion Calculator (EAC) — All 4 Forecast Formulas
- PERT Calculator — Three-Point Estimate, Variance & Probability
- Schedule Crashing Calculator — Least-Cost Time-Cost Trade-off
Industrial Finance
- CAPM Calculator, Cost of Equity (Ke)
- Cash Conversion Cycle Calculator (DIO, DSO, DPO)
- EVA Calculator (Economic Value Added)
- Financial Ratios Calculator (Liquidity & Leverage)
- Loan Amortization Calculator (Price & SAC)
- Operating & Financial Leverage Calculator (DOL, DFL, DCL)
- ROI, ROA & ROIC Calculator (Return Metrics)
- WACC Calculator, Weighted Average Cost of Capital
Energy Management
- Compressed Air Cost & Leak Calculator (kWh + cfm)
- Energy Cost / Electricity Bill Calculator (kWh + Demand)
- Motor Energy & Efficiency Calculator (kW, HP, Load)
- Peak Demand & Load Factor Calculator (kW + Demand Charge)
- Power Factor Correction Calculator (kVAR Capacitor Sizing)
- VFD Energy Savings Calculator (Pumps & Fans)
Industrial Automation
- Air Receiver Tank Size and Compressed-Air Demand Calculator
- Conveyor Belt Speed and Motor Power Calculator
- Gear Ratio and Gearmotor Torque Calculator
- Pneumatic Cylinder Force and Air Consumption Calculator
- Servo Motor Sizing Calculator (Inertia Ratio and RMS Torque)
- VFD Energy Savings Calculator (Variable Frequency Drive)
Packaging Engineering
- Box Compression Strength Calculator (McKee Formula, BCT and Safe Stacking)
- Cases Per Pallet Calculator (Palletization, TI x HI)
- Cushion and Foam Thickness Calculator (Drop Height, Fragility, Static Loading)
- Dimensional (DIM) Weight Calculator (All Carriers, Billable Weight)
- RSC Box Blank Size Calculator (Corrugated Sheet Size and Dieline)
- Stretch Wrap Film Usage and Cost Calculator (Pre-Stretch Savings)
Forecasting and Analytics
- Exponential Smoothing Calculator (SES and Holt, with Auto-Optimized Alpha and Beta)
- Forecast Accuracy Calculator (MAD, MAPE, WMAPE, Bias and Tracking Signal)
- Linear Regression Forecast Calculator (Least-Squares Trend, R2, and Prediction Band)
- Moving Average Forecast Calculator (Simple and Weighted, with Error Metrics)
- Seasonal Index Calculator (Deseasonalize and Seasonally Adjusted Forecast)
- XYZ Analysis Calculator (Demand Variability Classification and ABC-XYZ Matrix)
ESG and Compliance
- Carbon Intensity Calculator (Emissions per Revenue, Tonne, MWh or Unit, GRI 305-4)
- Electricity CO2e Calculator (kWh to CO2e, Grid Emission Factor by Region)
- Fuel Combustion CO2e Calculator (Scope 1 Stationary and Mobile, kg CO2e by Fuel)
- Safety Incident Rate Calculator (TRIR, DART, LTIFR, Severity – OSHA and ISO)
- Scope 1 and 2 Carbon Footprint Calculator (GHG Protocol, Transparent Factors)
- Waste Diversion Rate Calculator (Landfill Diversion, Recycling, TRUE and UL 2799 Tiers)