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A native macOS converter for files and units. Drop files to convert or compress them on this Mac. Switch to Units for measurements and live currency. Originals are never overwritten.
open Kiln.xcodeproj
Or build the shippable app:
./scripts/build-app.sh
open build/Kiln.app
Requires macOS 15+ and Xcode 16 / 26+ to build from source.
Files
- Drop files (or folders) onto the window, or Browse
- Finder: right-click → Services → Convert with Kiln
- Modes: Convert, Compress, Combine, Split
Units
- Angle, area, currency, data, energy, force, fuel, length, power, pressure, speed, temperature, time, volume, weight, plus frequency, acceleration, and illuminance
- Currency rates from Frankfurter. Amounts stay on this Mac. Refresh with
⌘R. Auto-refresh every hour while the app is active.
Settings: language (30 locales), appearance, save location, currency auto-refresh.
export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
xcodebuild -scheme Kiln -destination 'platform=macOS,arch=arm64' test
MIT © TGthms. See LICENSE.
A packaged Kiln.app is attached to GitHub Releases.