Calc Suite
Interactive calculators with nothing sent to a server.
Calculator site
What it is
A two-pane calculator layout — sticky inputs with paired sliders on the left, live headline results, a donut split and year-by-year tables on the right. All computation runs in the browser; user inputs never leave the device.
What the design gives you
- Slider-and-number inputs that stay in sync, recomputing on every change
- Headline figure, supporting stats and an animated donut split per calculator
- Calculation logic isolated as pure functions — testable, and reusable in an app wrapper
- FAQ blocks with FAQPage structured data on every calculator
Under the hood
- Roughly 3 kB of JavaScript for an entire seven-calculator site
- No accounts, no database, no server — nothing entered is transmitted
- Dated rule data (e.g. tax slabs carry their financial year visibly)
Good for
- Finance tools
- Health and fitness tools
- Any niche with numbers to plan around