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Video File Size Calculator

Predict exact final video render file size based on bitrate, duration, and audio streams.

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Video File Size Calculator

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Predict exact final video render file size based on bitrate, duration, and audio streams.

CONTAINER OVERHEAD:
VIDEO RUNTIME DURATION600 SECONDS
HOURS:
MINUTES:
SECONDS:
VIDEO & AUDIO DATA RATES3.13 MB/sec
VIDEO BITRATE (MBPS):
1 Mbps (Low SD)50 Mbps (4K Web)300 Mbps (ProRes/Intra)
AUDIO BITRATE:320 kbps
CODEC & PLATFORM PRESETS
ESTIMATED TOTAL OUTPUT FILE SIZE100% MATHEMATICAL PRECISION
1.84 GB
1,882.3 Megabytes (MB) • 1.838 Gigabytes (GB)
DURATION: 600s (10m 0s)
TOTAL COMBINED BITRATE: 25.32 Mbps
DATA RATE PER SEC:3.09 MB/s
PER MINUTE:185.4 MB
PER HOUR OF FOOTAGE:10.87 GB
24H CONTINUOUS:0.25 TB
SD CARDS & SSD CAPACITY MATRIXHOW MUCH FOOTAGE FITS
64 GB SD Card
5h 48m
64 GB capacity
128 GB SD Card
11h 36m
128 GB capacity
256 GB CFexpress
23h 12m
256 GB capacity
512 GB SSD
46h 25m
512 GB capacity
1 TB Extreme NVMe
90h 40m
1000 GB capacity
4 TB RAID NAS
362h 40m
4000 GB capacity
ESTIMATED NETWORK UPLOAD TIMEFOR 1.84 GB RENDER
1 Gbps Fiber
15 sec
1000 Mbps uplink
500 Mbps Cable
30 sec
500 Mbps uplink
100 Mbps Broadband
2m 31s
100 Mbps uplink
25 Mbps 5G / Starlink
10m 2s
25 Mbps uplink
FFMPEG COMPRESSION COMMAND
ffmpeg -i input.mov -c:v libx264 -b:v 25000k -maxrate 37500k -bufsize 50000k -c:a aac -b:a 320k output.mp4
TIP: USE REVERSE SOLVER TO HIT EXACT DISCORD (25MB) OR FAT32 (4GB) LIMITS•CALCULATES CONTAINER OVERHEAD (MP4/MOV/MXF)
100% IN-BROWSER MATHEMATICAL ENGINE
RAM-ONLY ENGINE•OUTBOUND HTTP REQUESTS: 0•
NO CREDENTIALS REQUIRED
VERIFIABLE CLIENT-SIDE PRIVACY CONTRACT
INSPECT VIA BROWSER DEVTOOLS NETWORK TAB (0 BYTES TRANSMITTED)
Zero Sign-Up FrictionNo email, no phone verification, no password creation. Start working immediately.
Zero Cloud ExposureYour files, calculations, or tokens remain exclusively in your computer's active RAM.
Instant 0ms ResponsivenessNo AI queues, no rate-limiting, and no cloud processing delays.
HOW TO USE THE VIDEO FILE SIZE CALCULATORDIRECT WORKFLOW
GUIDE
1

Set the total video duration in minutes or hours.

2

Choose a streaming preset (YouTube 4K, Twitch, 1080p) or enter a custom bitrate.

3

Select your audio codec bitrate.

4

View the exact expected file size in Megabytes (MB) and Gigabytes (GB).

TECHNICAL SPECIFICATIONS & PERFORMANCEENGINE TELEMETRY
VERIFIED
EXECUTION SPEED:0.2ms (Instant local)
SECURITY LEVEL:100% Local
NATIVE SUBSYSTEM:O(1)
Includes built-in bitrates for YouTube, Twitch, Vimeo, and ProRes 422.
Calculates both raw data transfer rates and storage per hour.
Includes broadband upload time estimation across Gigabit and 5G networks.
FREQUENTLY ASKED QUESTIONSPRIVACY & PROTOCOL SPECS
FAQ

How is video file size calculated mathematically?

Video file size is calculated as: Total Size = (Video Bitrate + Audio Bitrate) × Duration in Seconds ÷ 8.

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