Why this tool is useful
Use original Metaphone for English-language search keys where digraphs such as TH, SH and PH need more context than a numeric Soundex class provides.
Create compact original-Metaphone codes for English words and names using context-sensitive consonant and digraph rules.
Ready. Your working data stays in this browser.
Use original Metaphone for English-language search keys where digraphs such as TH, SH and PH need more context than a numeric Soundex class provides.
After explicit Latin folding, a bounded local scanner applies the original Metaphone rules and emits at most four symbols per input line, including 0 for the TH sound.
Smith and Smythe both encode as SM0 under the original four-symbol Metaphone variant, so they can enter the same review bucket.
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.