Universal Key Progression Chart
A free browser-based locksmith tool for generating and visualizing key bitting progressions using MACS limits, cut depth ranges, and known cuts. Designed for use with a broad range of options where locks or keys can only partially be read.
MACS & Cut Depth Control
Define realistic key limits for accurate progression generation.
Partial Key Reads
Generate full possible bittings from incomplete key information.
JSON Save & Reload
Store and restore progression sessions instantly on your device.
Mobile Friendly
Works in the field, shop, or anywhere you can take a phone!
How It Works
- Load a saved chart or select the total number of cuts on your key
- Enter MACS limits and cut depth range
- Enter known key cuts read from partial key or lock
- Generate full progression chart
- Eliminate invalid bittings as you test and burn keys
- Save or reload sessions anytime via JSON file download
- PRO-TIP* You can enter commonly used key data (# of cuts, MACS, depth range) and save without entering known cuts to create DSD profiles for later use. Just save it as your DSD name and you're ready to go next time!