Reel Break Timecode Calculator
Split a feature into N reels of a target maximum length and get each reel's start timecode and duration for DCP/lab delivery.
Features are split into reels (historically ~20 min of film) for handling, and DCPs still composition-split for memory and CPL structure. This plans even reels under your maximum so no single reel is awkwardly short — reel breaks should fall on quiet cuts, never mid-action.
Rule / Formula
Split a feature into N reels of a target maximum length and get each reel's start timecode and duration for DCP/lab delivery.
About Reel Break Timecode Calculator
Split a feature into N reels of a target maximum length and get each reel's start timecode and duration for DCP/lab delivery. Features are split into reels (historically ~20 min of film) for handling, and DCPs still composition-split for memory and CPL structure. This plans even reels under your maximum so no single reel is awkwardly short — reel breaks should fall on quiet cuts, never mid-action.
How to use Reel Break Timecode Calculator
- 1Enter your values into the fields in Reel Break Timecode Calculator.
- 2The result and any pass/fail verdict update instantly as you type — no button to press.
- 3Check the substituted formula and worked example to see exactly how the result was derived.
- 4Copy or note the result for your spec, delivery or planning.
Why use Reel Break Timecode Calculator?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: DCP composition / reel structure (SMPTE ST 429-7).
- ✓Shows the governing formula and a worked example, so you can trust and check every result.
- ✓100% free with no sign-up, no watermark and no usage limits.
- ✓Works on any device — desktop, tablet or phone — and keeps working offline once loaded.
Frequently asked questions
What does Reel Break Timecode Calculator do?+
Split a feature into N reels of a target maximum length and get each reel's start timecode and duration for DCP/lab delivery. Features are split into reels (historically ~20 min of film) for handling, and DCPs still composition-split for memory and CPL structure.
Is my data private?+
Yes. Reel Break Timecode Calculator runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is Reel Break Timecode Calculator based on?+
It follows DCP composition / reel structure (SMPTE ST 429-7). Always confirm against the current official document, as specifications and rates can change.
What formula does it use?+
Reel Break Timecode Calculator uses: reels = ⌈total ÷ max reel length⌉; even length = total ÷ reels. The tool shows this formula with your own numbers substituted so you can verify the result.
Is Reel Break Timecode Calculator free to use?+
Yes — it is completely free with no account, no sign-up and no usage limits. There is no watermark and no paywall.
Embed Reel Break Timecode Calculator on your website
Want Reel Break Timecode Calculatoron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/reel-break-timecode-calculator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Reel Break Timecode Calculator — ToolJolt" loading="lazy"></iframe>Related Broadcast tools
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