Unscramble Letters Into Words

Worked example

Input: RATES

Result: ASTER, RATES, STARE, TASER, TEARS

Each result uses only the supplied letters and never uses a letter more times than it appears.

What this tool handles

This utilities tool focuses on English words, Letter combinations, Word puzzles.

• Turn loose letters into valid words
• Respect repeated-letter counts
• Use wildcard letters
• Group results by word length

Letters, not order

The single most useful thing to understand about unscrambling is that the order you type in carries no information. A set of letters is defined by which letters it contains and how many of each — its multiset. Every word built from those letters shares that same fingerprint, which is why the tool can find all of them in one pass rather than testing arrangements one at a time.

This is also why repeated letters behave the way they do. Two Es in your input means words needing two Es are available, and words needing three are not. The tool tracks counts, not just presence.

From loose letters to a usable shortlist

A large letter set can return hundreds of words, which is not always helpful. The filters exist to cut that down to the ones you can actually use: set a length if the space you are filling is fixed, set a starting letter if you are building off a tile already on the board, or set a contained letter if the word has to cross an existing one.