Formula Reference Hubs
Plain-language mathematical breakdowns of every core formula used across SpecWhale tools.
How body mass index is calculated, what it measures, and where it falls short.
The Compound Interest Formula ExplainedHow compound interest is calculated, the difference from simple interest, and worked examples.
The Loan Payment Formula ExplainedHow monthly loan and mortgage payments are calculated using the amortization formula.
The BMR Formula ExplainedHow Basal Metabolic Rate is calculated using the Mifflin-St Jeor and Harris-Benedict equations.
The ROI Formula ExplainedHow Return on Investment is calculated, annualised, and applied to business and investing decisions.
The Percentage Formula ExplainedHow percentages, percentage change, and reverse percentage calculations work with worked examples.
Ohm's Law Formula ExplainedHow voltage, current, and resistance relate via Ohm's Law with worked examples and circuit applications.
CPM, CPC, and CTR Formulas ExplainedHow Cost Per Mille, Cost Per Click, and Click-Through Rate are calculated in digital advertising.