Video Size Calculator Pro - Professional Video File Size Calculator App
Predict, compare, and optimize video file sizes with precision. Built for filmmakers, editors, and content creators who need accurate storage and bitrate planning in seconds.
Reverse Size
Batch Planner
Pro Presets
Dark Mode
Codec Smart
Compare Exports
Features with Benefits
Instant Size Calculator: Get real-time file size predictions for any codec, resolution, and frame rate.
Batch Planner: Manage multiple clips with unique settings and export total storage needs.
Reverse Calculator: Work backward from a target file size to the best codec and resolution.
Codec Smart: Compare ProRes, H.265, RAW, and more to optimize quality vs. storage.
Audio Aware: Factor in audio formats and channels to fine-tune total size.
Storage Modes: Toggle binary vs. decimal for accurate industry-standard calculations.
Dark Mode Ready: Designed for comfort in any environment.
No Subscriptions: One-time purchase, unlimited professional use.
How It Works
Video Size Calculator Pro makes professional video planning effortless. Start with the Calculator, where you can select from 20+ resolution presets (HD to 8K DCI), 15+ frame rates (23.976–120 fps), 25+ professional codecs (ProRes, H.264/H.265, RED RAW, Blackmagic RAW), and 15+ audio presets. Enter your clip duration and instantly see file size estimates with full breakdowns for video, audio, and overhead.
Need to handle complex projects? Use the Batch Calculator to add multiple clips with individual settings. Get per-clip and total storage requirements in one view, then export the data for planning.
If you’re working backward from a target file size, the Reverse Calculator suggests the optimal resolution, codec, and audio combination. You can even compare two different configurations side by side to balance quality and storage.
Whether you’re preparing for a film shoot, estimating YouTube uploads, or archiving in RAW formats, Video Size Calculator Pro gives you confidence and accuracy every time.
Frequently Asked Questions
💰 Pricing & Availability
-
The app is a one-time purchase of €2.99 / $2.99 on the App Store. There are no subscriptions or in-app purchases.
-
No. All future updates, bug fixes, and feature improvements are included with your purchase.
📱 Compatibility & Requirements
-
It is built for iPhone (iOS 18.5+). It works on all current iPhone models including iPhone SE (2nd gen) and later.
-
Currently, the app is optimized for iPhone only. An iPad/Mac version may be added in future updates.
-
No. All calculations are done locally on your device, so the app works 100% offline.
🎬 Features & Usage
-
The app uses industry-standard bitrate data for each codec and format. Accuracy is within professional tolerances, though final sizes may vary slightly depending on camera manufacturer and metadata overhead.
-
Yes. The Batch Calculator allows you to add unlimited clips with different settings and instantly see the combined storage size.
-
The Reverse Calculator lets you enter available storage (e.g., 512GB card) and tells you the maximum recording time based on your chosen codec, resolution, and audio.
-
Yes. Over 25 codecs are included, such as ProRes 422/4444, H.264, H.265/HEVC, AV1, RED RAW, and Blackmagic RAW.
-
Absolutely. Alongside presets (HD, 4K, 8K, etc.), you can input custom values for frame rate, resolution, audio, and compression ratio.
-
Yes. You can choose from professional audio formats (Stereo, 5.1, 7.1, 192kHz, etc.), and the app factors them into the total file size.
-
Yes. The Compare Mode shows two export settings side by side, highlighting differences in size, codec efficiency, and storage impact.
-
Yes. Video Size Calculator Pro includes presets aligned with streaming, cinema, and broadcast standards for quick planning.
🔒 Privacy & Security
-
No. The app requires no accounts, logins, or registrations.
-
No. All calculations are processed locally. Your project data never leaves your iPhone.
-
No. All calculations and preferences remain on your device.
⚙️ Settings & Customization
-
Yes. You can toggle between binary and decimal modes for precise storage estimates.
-
Yes. In Settings, you can add an overhead percentage to account for metadata and camera file system variations.
-
Yes. The app remembers your last-used codec, resolution, frame rate, and audio settings automatically.
-
Yes. A fully optimized dark mode makes long sessions easier on your eyes.