173 visa can be converted to 864?

No, 173 can be transferred to 143 or 884 to 864 for temporary parent visa and permanent residence visa.

Visa 173 is a temporary visa. Unlike the 143 visa, which requires the applicant to pay all the fees in one lump sum, the fee for the 173 visa can be paid in two installments. Within 2 years after obtaining a temporary visa of 173, you can change it to a permanent visa of 143 by paying the remaining amount.

You also need to pay a fee to apply for the 864 visa, and you can get a permanent residence visa in one step. Applicants need to be in Australia when submitting applications and signing contracts, and their age is also required.