Free SMPTE Calculator — Timecode, Frames & Frame Rates

Ultimate SMPTE Calculator for Video Editors and Colorists

What it is
A specialized timecode tool that converts between SMPTE timecode (HH:MM:SS:FF) and frame counts, handles multiple frame rates, drop-frame vs non-drop-frame, and performs arithmetic (add/subtract/sync/offset) for editing, conforming, and color-timing workflows.

Key features

• Multi–frame-rate conversion: 23.976, 24, 25, 29.97 (DF/ND), 30, 50, 59.94, 60 fps and custom rates.
• Drop-frame support: Correctly converts and displays drop-frame timecode for NTSC-derived rates (e.g., 29.97 DF, 59.94 DF).
• Timecode ↔ frames: Instant bi-directional conversion with selectable start/offset.
• Arithmetic & ranges: Add/subtract timecodes, calculate durations, trim in/out, and create timecode ranges.
• Frame-accurate offsets: Apply negative/positive offsets for conforming and relinking media.
• Batch processing & CSV: Convert lists of timecodes or frame ranges and export/import CSV for editorial logs.
• Frame rate conversion with pulldown handling: 3:2 and other pulldown options for matching film/tape to video.
• User presets: Save common frame-rate/profile setups and starting timecodes.
• Integration-friendly: Copy results to clipboard, encode as SMPTE LTC, or generate burn-in overlays for preview.
• Mobile & desktop: Responsive web app or lightweight desktop builds for on-set and post use.
• Edge cases handled: Variable frame rates noted, negative timecodes, and long-duration reels beyond 24 hours.

Typical workflows

• Converting editorial EDL timecode to frame-accurate durations for conforming in finishing.
• Calculating offsets when relinking media from different frame rates or with dropped frames.
• Preparing color-timing session ranges and precise frame counts for deliverables.
• Generating burn-in overlays for review dailies with correct timecode and reel names.
• Batch-converting timecode logs from logging tools into frame counts for QC scripts.

Why it helps

• Eliminates manual conversion mistakes between HH:MM:SS:FF and frames.
• Ensures correct handling of drop-frame rules, avoiding subtle sync drift.
• Speeds repetitive tasks (batch conversions, offsets) and integrates with editorial pipelines.