Type your name in English letters. If it has a traditional Hebrew equivalent, you get its spelling, meaning and pronunciation. Either way you also get the phonetic spelling Israelis use on a form.
Names like David, Sarah, Rachel, Daniel and Noa go straight back to a figure or word in the Hebrew Bible, so they carry one settled spelling that hasn't changed in three thousand years. That spelling is what shows up on a ketubah, on an aliyah to the Torah, and on a baby-naming certificate. If your English name is Hannah, Michael, Deborah or Aaron, you already have a Hebrew name; you just haven't seen it spelled out.
Most English names never existed in Hebrew: Kevin, Ashley, Brayden, Madison. There is nothing to look up, and no traditional spelling is more correct than another. What people actually do is spell the name by sound, in the accent an Israeli would use to say it back to you, which is exactly what the by-sound result above gives you.
A name typed here is meant for a form, a card or a screen, not skin. Hebrew reads right to left, drops most vowels in casual spelling, and a single wrong letter changes the word. Run anything permanent through the tattoo checker first.