File Size & Storage Converter
GB to MB, Transfer & Planner
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Convert bytes to GB instantly, estimate transfer times, and see how much fits on any drive or phone.
Turn bytes into gigabytes instantly — the exact file size and storage converter for photos, downloads, drives, and dev work.
Type a number, pick a unit, get the precise answer. No ads, no rounding tricks, no confusing charts — just an exact converter with a clean, fast interface.
KEY FEATURES
• Convert bit, byte, KB, MB, GB, TB and PB both ways, live as you type
• Switch decimal (1000-based) and binary (1024-based) units in one tap
• Transfer-time estimator — see exactly how long a download or upload takes on 3G, 4G, 5G, Wi‑Fi, or fiber
• Storage planner — see how many photos, songs, or hours of video fit on any drive or phone
• Pin favorite conversions and keep a saved history
• Plain-language reference on why a "1 TB" drive shows less, and other storage facts
HOW IT WORKS
1. Enter a value and choose the units you're converting between
2. Read the exact result instantly, no calculator needed
3. Save it for later, or switch to Transfer and Planner for real-world estimates
Full access to the transfer-time estimator, storage planner, and complete all-units view is part of File Size Premium, available as a weekly, yearly, or lifetime option. The core converter works without any purchase.
File Size runs entirely on your device — no account, no ads, and nothing you type ever leaves your phone.
Terms of Use: https://web-levi.web.app/terms
Privacy Policy: https://web-levi.web.app/privacy-policy
Questions? Contact tphuc.work@gmail.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Introducing Premium with new features. Plus bug fixes and improvements.
The developer, Phuc Pham, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Phuc Pham
- Size
- 4.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime Pro $29.99
- Yearly $14.99
- Weekly $2.99
- Copyright
- © 2026 Phuc Pham