Every unit,
one keystroke.
Convertwright lives in your menu bar. Click, type something like “100 usd to aed”, and the answer pops up as you type. Click it to copy — done.
Every unit you’ll ever type.
No dropdowns, no tabs, no modes. Just type — Convertwright figures out what you meant.
Length
Metric, imperial, and all the awkward bits in between.
Weight
From grams of flour to tons of steel.
Temperature
Celsius, Fahrenheit, Kelvin — with sensible defaults.
Data
File sizes and bandwidth, Finder-style decimal math.
Volume
Liters, gallons, cups, fluid ounces — kitchen approved.
Currency
Live rates with offline fallback. Bundled, so it never breaks.
Speak human, get numbers.
The parser handles typos in spirit — full words, abbreviations, symbols, even compound imperial heights. If a human would understand it, so will Convertwright.
Click to copy
The answer is a button. Click it and it's on your clipboard, ready to paste.
Remembers for you
Your last 12 conversions persist between launches. Click one to re-run it instantly.
Lives in the menu bar
No Dock icon, no window clutter. The last answer sits right in the menu bar.
Built like the OS, because it lives in it.
Convertwright is a Cloverwright product — native Apple platforms built in Swift, held to the same standard as our client work.
1A real parser, not a search box
Queries are normalized and matched against ordered grammars: compound imperial (5 ft 8 in to cm, 5'8" to cm), temperature (32C to F), currency symbols and aliases ($100 to aed, 100 dollars in euros), then every linear table. Leave the target out and it picks the sensible default — 10 kg becomes pounds.
2Currency with a safety net
Rates ship bundled so conversions work on a plane, and a Refresh rates button pulls the latest from the free open.er-api.com feed. If the fetch fails, the cached rates stay in place — and every answer carries its rate date, so you always know how fresh the numbers are.
3Native, not wrapped
Pure Swift and SwiftUI with a MenuBarExtra scene — no Electron, no webview, no background daemons. It launches in a blink, sips almost no memory, and renders like a first-party macOS citizen.
4Private by design
The app makes exactly one kind of network request — a currency rate refresh, only when you press the button. No analytics, no telemetry, no account. Your queries never leave your Mac.
Free. Forever.
Convertwright is a gift from the studio — a small, perfect tool, priced like one.
- All six conversion families, live as you type
- Click-to-copy, recents, and precision settings
- Currency rate refresh with offline fallback
- Complete Xcode project source included
Questions, answered.
Will Convertwright work on Apple Silicon?
Yes — it's a universal Swift binary that runs natively on both Apple Silicon and Intel Macs running macOS 13 (Ventura) or later.
Where do the currency rates come from?
The app ships with a bundled snapshot of ~35 currencies so it works fully offline. Press “Refresh rates” in Settings to pull the latest from the free open.er-api.com feed. If you're offline, it keeps using the cached rates and shows you the cache date on every answer.
What can it convert?
Six families: length (m, km, mi, ft, in…), weight (kg, lb, oz…), temperature (°C, °F, K), data (B, KB, MB, GB, TB — decimal, like Finder), volume (L, mL, gal, cups…), and 35+ currencies. Try “5 ft 8 in to cm”, “32C to F”, or “100 usd to aed”.
Does Convertwright send any data anywhere?
No. The only network request it ever makes is the currency rate refresh, and only when you press the button. No analytics, no telemetry, no accounts — your queries never leave your Mac.
Can I add my own units?
Please do. The download includes the full Xcode project. Units live in simple lookup tables in ConversionEngine.swift — add a key, a factor to the base unit, and a default target, and the parser picks it up automatically.
How do I open it quickly?
Convertwright lives only in your menu bar (no Dock icon). Click the swap-arrows glyph and the input is already focused, so you can start typing immediately. Enable “Launch at login” in Settings and it's always one click away.
Get Convertwright for your Mac.
Free for macOS 13 and later. One keystroke, every unit.
This build ships as a complete Xcode project — open it, press ⌘R, and the swap-arrows glyph moves into your menu bar. A signed, double-clickable release is on the way. Convertwright is a Cloverwright product.