Region Time Counter Pro

Advanced region duration calculator for REAPER

Region Time Counter Pro is a lightweight, cross-platform REAPER script that calculates total and selected region duration using union logic — without double-counting overlapping regions.

Developed as part of 34dev.tools.

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Features

• Total region duration (union of all regions)
• Selected region duration (union of checked regions)
• Searchable region list
• Per-region duration display
• Shift-click range selection
• Mouse wheel + draggable scrollbar
• Keyboard scrolling (↑ / ↓)
• Persistent checkbox state (stored in project)
• No js_ReaScriptAPI required
• macOS & Windows compatible

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Installation

1. Download Region Time Counter Pro.lua
2. Place it in your REAPER Scripts folder
3. Open Actions → Show action list
4. Click ReaScript → Load
5. Run the script

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Usage

• Check regions to include them in Selected
• Use Shift-click to select ranges
• Use Search to filter regions
• Use All / Clear for quick selection
• Scroll with mouse wheel or ↑ / ↓ keys

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License

MIT
© 2026 — 34dev — Audio Tools by Alexey Vorobyov (34birds)