Section II · 42 tools
Calculators.
Mortgages, loans, interest, taxes, retirement, health, math, and the rest. Every tool computes in arbitrary precision and links its formula in plain language.
42 calculators in business
Net Profit Margin Calculator
Calculate net profit margin by entering revenue, COGS, operating expenses, interest, and taxes. Get an instant profitability percentage for any business.
Productivity Calculator
Calculate productivity by dividing total output by hours worked. Adjust for break time and efficiency rating to measure true output per hour.
Optimal Price Calculator
Calculate the profit-maximizing price using linear demand and marginal cost. Find optimal price, quantity, and maximum profit instantly.
Price Elasticity Of Demand Calculator
Compute price elasticity of demand using the midpoint or point method to measure how strongly quantity demanded responds to price changes.
Incidence Rate Calculator (Osha Trir / Tcir)
Calculate OSHA TRIR/TCIR by entering recordable cases and hours worked. Benchmark your workplace safety rate against BLS industry averages.
Accounting Profit Calculator
Calculate accounting profit by subtracting explicit costs from total revenue. Supports COGS, wages, rent, depreciation, interest expense, and state tax rates.
Build Vs Buy Calculator
Compare in-house development vs vendor software costs over any time horizon, with state-adjusted labor rates, annual maintenance, and compounding SaaS price escalation.
Attrition Rate Calculator
Calculate attrition rate for employees or customers using average headcount. Supports monthly, quarterly, and annual periods with optional annualization.
Business Budget Calculator
Calculate monthly net profit by entering revenue, COGS, operating expenses, payroll, and state to get an instant business budget breakdown.
Customer Retention Rate Calculator
Calculate customer retention rate using CRR = ((E − N) / S) × 100. Measure what percentage of existing customers your business keeps each period.
Gdp Deflator Calculator
Calculate the GDP Deflator by dividing Nominal GDP by Real GDP and multiplying by 100. Instantly measure economy-wide price-level changes.
Dart Rate Calculator
Calculate DART Rate — OSHA's key safety metric for days away, restricted, or transfer incidents — per 100 FTE employees using actual hours worked.