Plan storage fast with bitrate, duration, and presets. Add audio details and container overhead easily. Export results to share, budget, and upload smarter anywhere.
| Scenario | Duration | Video | Audio | Overhead | Estimated Size |
|---|---|---|---|---|---|
| 1080p web upload | 00:10:00 | H.264 @ 5 Mbps | 192 kbps | 2% | ~ 392 MB |
| 4K web upload | 00:05:00 | HEVC @ 18 Mbps | 256 kbps | 2% | ~ 702 MB |
| Mezzanine master | 00:02:30 | ProRes-style @ 80 Mbps | PCM (48kHz, 24-bit, stereo) | 1% | ~ 1.52 GB |
The calculator estimates size from total bitrate and duration: Size(bytes) = (Video_bps + Audio_bps) × Duration_seconds ÷ 8 × (1 + Overhead).
Accurate file size estimates reduce last‑minute delivery surprises across production teams. When you plan a sprint, translate duration and target quality into predictable storage, transfer time, and cloud costs. This estimator combines video and audio rates, then applies container overhead to approximate what lands on disk. Use it during planning meetings to align editors, analysts, and stakeholders on realistic upload limits, retention policies, and archive tiers. It supports budgeting and capacity decisions.
Compressed video size is primarily driven by bitrate and time. The core relationship is simple: total bits equal bitrate multiplied by seconds, then divided by eight for bytes. The calculator accepts timecode or plain seconds, and reports results in practical units. If you need a quick benchmark, compare gigabytes per hour across alternatives. That single number helps forecast drive capacity and network throughput before exporting final renders. Compare exports quickly with it.
Codec choice changes how much bitrate you need for similar visual quality. More efficient codecs can deliver comparable clarity at lower rates, while intermediate formats intentionally spend more bits to preserve detail for grading. Presets provide typical starting points for common resolutions and delivery contexts, but content complexity varies. The VBR factor lets you model this: static scenes trend lower, while fast motion, noise, or fine textures trend higher. Test multiple settings.
Audio is smaller than video in many web workflows, yet it becomes significant for multichannel or uncompressed tracks. If you know the audio bitrate, enter it directly; otherwise estimate from sample rate, bit depth, and channels, then apply a compression ratio for lossy delivery. Container overhead accounts for metadata, indexing, and packaging. Keeping overhead modest is normal, but large subtitle tracks or multiple audio streams can increase it. Validate assumptions before publishing.
After estimating, use the breakdown to decide where optimization matters. If video dominates, lower the target bitrate, switch to a more efficient codec, or shorten duration with tighter edits. If audio dominates, reduce channels or select a practical bitrate. For raw workflows, consider chroma and bit depth tradeoffs. Finally, export CSV or PDF to document assumptions, compare scenarios, and keep approvals consistent through release planning. This keeps aligned across reviews and handoffs.
It estimates total file size from video and audio bitrates over the entered duration, then adds your chosen container overhead to reflect packaging and metadata.
Encoders adapt to content, two-pass tuning, GOP structure, and rate control. VBR can overshoot or undershoot targets, and additional tracks like subtitles or multiple audio streams increase the container size.
Use presets for quick planning and common deliveries. Use manual bitrate when you have platform targets, internal standards, or measured data from previous encodes.
Switch to uncompressed mode and enter resolution, frame rate, bit depth, and chroma. The tool approximates bits per pixel and multiplies by frames over time, then adds PCM audio.
For common MP4 and similar containers, 0–5% is a reasonable planning range. Use higher values when you expect extra tracks, frequent keyframes, or extensive metadata.
The display uses binary units based on 1024 steps for KB, MB, and GB. This aligns with how many operating systems report file sizes on disk.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.