Chai (חי) Gematria: 18
חי = 18 in standard Hebrew gematria.
ח=8 + י=10, so חי equals 18 in standard Hebrew gematria.
How the total is built
The calculator counts only the Hebrew letters in חי. Spaces, punctuation and vowel marks do not add a value.
Other methods
Use the main calculator to compare the same word under Gadol, Katan, Ordinal, Atbash and Perati. Keep the method explicit whenever comparing totals.