iPhone Ringtone (M4R) is Apple's ringtone format based on AAC audio, used for custom ringtones on iPhones.
Interchange File Format (IFF) is the Amiga multimedia container format used for audio, images, and 3D data on Commodore systems.
Reach for M4R when your priority is iphone ringtones, notification sounds — its efficient compression makes sharing fast and storage minimal.
Reach for IFF when your priority is amiga audio, legacy multimedia, mod music — its uncompromising quality ensures every detail is preserved.
Learn more about M4R and IFF formats in our detailed guide.
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M4R (iPhone M4R) - iPhone Ringtone, AAC-based ringtone format. Best for iphone ringtones, notification sounds.
IFF (IFF audio) - Interchange File Format, Amiga/Commodore multimedia container. Ideal for amiga audio, legacy multimedia, mod music.
Yes, GoConvertFile offers free conversion of M4R to IFF for files up to 100MB. No registration required.
Most M4R to IFF conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
IFF is ideal for amiga audio, legacy multimedia, mod music. Interchange File Format, Amiga/Commodore multimedia container
No, converting M4R to IFF does not cause additional quality loss — IFF uses lossless compression. However, any artifacts already present in the original M4R file will persist in the IFF output.
IFF files are typically 2-5x larger than equivalent M4R files because IFF preserves all pixel data. This is expected and necessary for lossless quality.