Fast, private, no‑signup tools — all in your browser

Local‑first calculators and converters with clear examples. Everything runs in your browser — your data never leaves your device.

⚡ Instant 🔒 Private 👁️‍🗨️ No tracking of inputs 📴 Works offline 💻 Data stays on your device

Press “/” to focus or Ctrl+K, ↑/↓ to navigate, Enter to open