# Transfer Calculator

> A currency transfer calculator with live cross-rate conversion, a currency picker listbox, fee breakdown, bank-comparison savings, and a drifting exchange rate — fully token-driven and design-system agnostic.

- Category: Payment
- Frameworks: Vanilla, React + CSS, React + Tailwind
- Design system: Ember Studio
- Dark mode: yes
- Access: premium (Atheros AI Pass)
- Page: https://builder.atheros.ai/components/transfer-calculator
- Preview: https://d17nmjscumqk5d.cloudfront.net/builder/templates/tpl_builder_transfer_calculator/preview-73e5091de042.webp

## Features

- Every compact picker, swap, comparison, and submit action retains a 44px minimum target.
- Two-way conversion — edit either the send or receive amount
- Currency picker as an accessible listbox with keyboard support
- Live cross-rate derived from per-EUR reference rates
- Transparent fee breakdown (fixed plus percentage)
- Bank-comparison panel showing estimated savings
- Currency swap with animated transition
- Simulated rate drift to mimic a live market feed

## Accessibility

- **ARIA labels** — All controls have `aria-label`
- **Currency picker** — `role="listbox"` with `aria-haspopup` and `aria-expanded`
- **Keyboard nav** — Arrow keys, `Home`/`End`, `Enter`/`Space`, `Escape` in menus
- **Picker focus** — Opening a picker focuses the selected option; options use a roving `tabindex`; closing returns focus to the trigger
- **Result updates** — A visually-hidden `role="status"` region announces user-driven recalculations; the periodic rate drift stays silent
- **Focus indicators** — `:focus-visible` outlines with `--ring`
- **Reduced motion** — `prefers-reduced-motion: reduce` disables animations

## Keyboard shortcuts

- `Enter` — Open picker or select the focused currency
- `Space` — Select the focused currency
- `ArrowUp / ArrowDown` — Move between currencies in an open picker
- `Home / End` — Jump to first/last currency
- `Escape` — Close any open picker

## Common questions

**Which frameworks is Transfer Calculator available in?**

Transfer Calculator ships as Vanilla, React + CSS and React + Tailwind — HTML, CSS, JS and React source you can copy, download or clone into Atheros AI Builder.

**Is the Transfer Calculator payment component free?**

Transfer Calculator is a premium component. Anyone can preview it; the source, downloads and AI customisation are included with Atheros AI Pass.

**Does Transfer Calculator support dark mode?**

Yes. Transfer Calculator ships light and dark themes, both drawn from the Ember Studio design system's tokens. Switch the preview to dark mode to compare them.

## Get the code

Preview Transfer Calculator live, then sign in to copy or download the source, apply another design system, or ask the AI assistant to change it: https://builder.atheros.ai/components/transfer-calculator

Every component on https://builder.atheros.ai is also reachable from Claude Code, Cursor and Codex through the Atheros MCP server (paid plans). Component index: https://builder.atheros.ai/llms-components.txt