Business Operations Calculators

A focused toolkit for running projects, people, and processes: from planning (EVM, CPM, PERT) to marketing growth (CAC, CLV, ROAS), HR & workforce, inventory & logistics, manufacturing KPIs, quality/Lean Six Sigma, and decision-science & strategy. Every tool uses transparent formulas with instant results.

Project Management

Critical Path Method (CPM) Calculator

Find the critical path, total/free float, and milestone dates to protect deadlines.

Earned Value Management (EVM) Calculator

EV, PV, AC with CPI/SPI and variance metrics to track cost and schedule performance.

PERT Estimate Calculator

Three-point estimates (O, M, P) with expected duration and variance.

Project ROI Calculator

Quantify return, payback period, and economic impact of initiatives.

Risk Assessment Matrix Calculator

Prioritize risks by likelihood × impact with severity levels and heatmap.

Marketing & Growth Analytics

A/B Test Statistical Significance Calculator

p-value, power, and minimum sample size for trustworthy experiments.

Churn Rate Calculator

Measure attrition by cohort or period and monitor portfolio health.

Click-Through Rate (CTR) Calculator

Engagement at a glance: clicks divided by impressions.

Cost Per Mille (CPM) Calculator

Cost per 1,000 impressions for display and video campaigns.

Customer Acquisition Cost (CAC) Calculator

All-in cost per new customer, including media, tools, and staffing.

Customer Lifetime Value (CLV) Calculator

Estimate lifetime value using margin, churn, and discount rate.

Lead Generation ROI Calculator

Connect cost per lead to closed-won revenue and ROI.

Net Promoter Score (NPS) Calculator

Promoters minus detractors with response distribution.

Return on Ad Spend (ROAS) Calculator

Revenue generated per unit of ad spend across channels.

Sales Funnel Conversion Rate Calculator

Stage-by-stage conversion and bottleneck analysis.

HR & Workforce

Absenteeism Rate Calculator

Lost days over scheduled days by team, location, or company.

Bradford Factor Calculator

Impact index emphasizing frequent short absences.

Cost Per Hire Calculator

Sum recruiting, tooling, and internal time per hire.

Employee Stock Option (ESO) Valuation Calculator

Estimate fair value and expense schedule for employee options.

Employee Turnover Rate Calculator

Separations over average headcount per period.

FTE (Full-Time Equivalent) Calculator

Normalize part-time hours into full-time equivalents.

Human Capital ROI Calculator

Return generated relative to investment in people.

Overtime Pay Calculator

Compute overtime hours and premium rates.

Salary Increase Percentage Calculator

Raise percentage and new compensation figure.

Training ROI Calculator

Benefits of learning programs vs. total cost.

Inventory & Supply Chain

Bullwhip Effect Simulator

See demand amplification across the chain under variability.

Economic Order Quantity (EOQ) Calculator

Optimal lot size minimizing ordering and holding costs.

Fill Rate Calculator

Orders fulfilled directly from stock, by line or unit.

Inventory Turnover Ratio Calculator

COGS over average inventory to gauge rotation.

On-Time Delivery Performance Calculator

Shipments delivered on or before promise date.

Reorder Point Calculator

Trigger level from demand and lead time expectations.

Safety Stock Calculator

Buffer stock based on variability and service level.

Logistics & Freight

Container Loading Calculator

Capacity and layout for cartons/pallets in containers.

Cubic Meter (CBM) Calculator

Convert dimensions to cubic meters and shipment volume.

Freight Class Calculator

Estimate NMFC class from density and handling.

Pallet Loading Calculator

Optimize units per pallet and per layer.

Manufacturing & Operations

Cycle Time Calculator

Unit or batch cycle time across the line.

Learning Curve Calculator

Time reduction with cumulative experience.

Little's Law Calculator

WIP = throughput × lead time to balance flow.

Overall Equipment Effectiveness (OEE) Calculator

Availability × Performance × Quality into a single KPI.

Process Capability (Cp & Cpk) Calculator

Capability indices vs. specification limits.

Queuing Theory (M/M/1) Calculator

Utilization, Lq, Wq from arrival and service rates.

Six Sigma Calculator (DPMO)

Defects per million opportunities and sigma level.

Takt Time Calculator

Align production cadence to customer demand.

Strategy & Decision Science

Ansoff Matrix Generator

Growth strategies across products and markets.

BCG Matrix Generator

Portfolio mapping: stars, cash cows, question marks, dogs.

Forecasting Calculator (Moving Average, Exponential Smoothing)

Short-term forecasts with MA and ES methods.

Game Theory (2x2 Matrix) Solver

Dominant strategies and Nash equilibria.

Inventory Control (Newsvendor) Model Calculator

Optimal stock under uncertain demand and asymmetric costs.

Linear Programming Solver

Optimize an objective subject to linear constraints.

Multi-Criteria Decision Analysis (AHP) Calculator

Weights from pairwise comparisons with consistency check.

PESTLE Analysis Generator

Macro factors: Political, Economic, Social, Technological, Legal, Environmental.

Porter's Five Forces Analysis Generator

Industry competitive forces and expected profitability.

Root Cause Analysis (5 Whys) Generator

Iterative questioning to trace the primary cause.

SWOT Analysis Generator

Strengths, weaknesses, opportunities, and threats.
Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
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Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
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