| NAME | TIMEFRAME | GERMAN |
| Proto-Indo-European | ca. 5000 - 500 BC | (Ur)Indo-Germanisch |
| (Proto-)Germanic | ca. 500 BC - ? | (Ur)Germanisch |
| Old High German | ? - 1050 | Althochdeutsch |
| Middle High German | 1050 - 1350 | Mittelhochdeutsch |
| Early New High German | 1350 - 1600 | Frühneuhochdeutsch |
| New High German | 1600 - present | Neuhochdeutsch |
| Proto-Indo-European | |||||||||||
| Centum Group | Satem Group | ||||||||||
| Germanic | Italic | Celtic | Greek | Anatolian | Tocharian | Slavic | Baltic | Indic | Iranian | Armenian | Albanian |
| German English Dutch Danish Swedish Norwegian Icelandic *Gothic |
*Latin French Spanish Italian Portuguese |
Welsh Irish (Gaelic) Scots Gaelic Breton |
Greek | *Hittite *Lycian *Lydian *Luvian |
*Tocharian A *Tocharian B |
Russian Czech Slovak Polish Ukrainian Serbian Croatian |
Lithuanian Latvian *Old Prussian |
*Sanskrit Hindi Urdu Gujurati Bengal |
*Avestan Farsi Pashto |
Armenian | Albanian |
| Proto-Germanic | ||
| Western | Northern | Eastern |
| German English Dutch Afrikaans Frisian |
Danish Swedish Norwegian Icelandic Faroese |
*Gothic |
| PIE | Germanic | Description |
| p, t, k | f, þ, x (>h) | voiceless stops become voiceless fricatives |
| b, d, g | p, t, k | voiced stops become voicless stops |
| bh, dh, gh | b, d, g | voiced aspirated stops become voiced unaspirated stops |
| PIE | Germanic | Description |
| f, þ, x, s | v, ð, gh, z (>r) | voiceless fricatives become voiced fricatives |
| Germanic | High German | Description |
| p, t, k | pf (ff), ts (ss), [k]ch | voiceless stops become voiceless affricates or medially fricatives |