ROI Calculator
Sliders in, a payback chart out, for proposals and sales pages.
Convert an amount using a rate you provide, with no rate feed.
/embed and press Enter.https://notionarena.vercel.app/embed/currency-converter/embed → paste this URL → Embed link
https://notionarena.vercel.app/embed/currency-converterWorks on every Notion plan. No integration, no OAuth, no server. The trade-off: the widget lives on our host, so it needs network access to render, and a workspace serving thousands of page views a day could hit fair-use limits. For offline-safe delivery, use the HTML block tab.
A small offline arithmetic helper for converting one amount to another with a manually entered exchange rate. It does not fetch market data, identify a current rate, connect to a bank, or provide financial advice. Check the rate and its timestamp independently before relying on it.
Sliders in, a payback chart out, for proposals and sales pages.
Compare monthly income against four editable expense buckets.
Adjust a small item list with plus and minus stock controls.