ExponentialGrowthCalculator.com is a free collection of calculators covering every form of exponential growth and decay, from compound interest to bacterial growth to radioactive half-life. Every input recalculates the output instantly, with no submit button, no server requests and no tracking of the numbers you enter.
Accuracy
All calculations run in JavaScript using the browser's IEEE-754 double-precision arithmetic. Standard library functions Math.pow, Math.exp and Math.log handle every operation. Results are exact to roughly 15 significant digits, and every worked example published on the site is checked by hand against the same closed-form formula shown next to it.
Privacy
No inputs are sent to a server. Everything happens in your browser. See the privacy policy.
Performance
The site ships pre-rendered static HTML and CSS, defers non-critical assets and uses no client-side routing for first paint. Lighthouse audits target 99+ on both desktop and mobile.
Coverage
The 24 pages cover compound interest, population growth, bacterial growth, viral spread, drug metabolism, radiocarbon dating, logistic curves, regression, equation solving and pure mathematical reference. Start at the homepage, browse the worked examples, or get in touch.