Video File Size Calculator – Storage Needed
Calculate video file size from resolution, bitrate, and duration.
About This Calculator
Calculate video file size from resolution, bitrate, and duration. Use the calculator above for instant results.
Worked Examples
- 8 x 3600 / 8 / 1024 = 3.52 GB
Answer: 3.52 GB
- 25 x 7200 / 8 / 1024 = 22 GB
Answer: ~22 GB
- 50 x 1800 / 8 / 1024 = 11 GB
Answer: ~11 GB
Who Uses This Calculator?
Estimate clip storage needs.
Plan storage for shoots.
Plan media server storage.
Budget storage for video files.
Common Mistakes to Avoid
❌ Bitrate vs resolution
4K at low bitrate can look worse than 1080p at high bitrate. Bitrate determines quality more than resolution alone.
❌ Codec affects file size
H.265/HEVC is roughly 50% smaller than H.264 at same quality. AV1 is even smaller. Codec matters enormously.
Frequently Asked Questions
Common video bitrates?
4K HDR (streaming): 15-25 Mbps. 4K Blu-ray: 50-100 Mbps. 1080p streaming: 5-8 Mbps. 1080p Blu-ray: 15-40 Mbps. 720p: 2-5 Mbps.
Best codec for small files?
H.265 (HEVC) or AV1 give best quality-to-size ratio. H.264 is most compatible but 50% larger for same quality.
How much storage for 1TB of footage?
At 100 Mbps (pro camera): about 22 hours. At 8 Mbps (1080p streaming): about 280 hours.