Use dge for the /j/ sound right after a short vowel at the end of a word — everywhere else (after a consonant, a long vowel, or a vowel team), use ge alone. It's the same short-vowel pattern behind ck vs k and tch vs ch, just marking the /j/ sound instead.

The rule in one sentence
If /j/ comes immediately after a short vowel, spell it dge (bridge, edge, badge). If a consonant sits between the vowel and /j/, or the vowel is long, spell it ge alone (orange, change, huge). This mirrors the ck vs k rule and the tch vs ch rule — the same short-vowel logic, three different sounds.
How to test it
- Listen to the vowel right before /j/. Short and clipped, or long and drawn out?
- If it's short with nothing between it and /j/, try dge. Bridge, edge, and badge all fit this pattern.
- If a consonant sits before /j/, use ge alone. Orange and change never take dge because n already sits between the vowel and the sound.
Longer words can look like exceptions
College and knowledge both have a short vowel right before /j/ but are spelled ge, not dge. That's because the short-vowel-plus-dge rule applies most reliably to the final, stressed syllable of a word — in longer, multisyllable words like these, it's worth teaching the spelling by sight rather than expecting the rule to predict it.
Dge shows up in the middle of words too
The rule isn't only about the end of a word — the same short-vowel-plus-dge pattern shows up in the middle of longer words as well, right before another syllable. Budget, gadget, widget, and fidget all have a short vowel sitting immediately before dge, exactly like bridge or edge, even though there's more word after it. The test still works the same way: say the vowel sound right before /j/, and if it's short with nothing sitting between it and the sound, dge is the way to bet, whether or not that /j/ happens to fall at the very end of the word. This is worth pointing out once a child is reading longer, two-syllable words, since the short-vowel rule can otherwise feel like it only applies to short, one-syllable words like the examples usually used to teach it first.
This is one pattern among many in our full English spelling rules guide. If your child mixes up hard and soft g in other contexts too, see hard G and soft G.
Free printable for this topic
Download the CK / TCH / DGE Spelling Cheat Sheet — a free PDF you can print and use today.