A new snapshot of domestic violence is planned for Victoria, in what the state government says is a world first.

The proposed Victorian Family Violence Index could include indicators like hospital presentations, police data, the number of convicted perpetrators, homelessness, and community attitudes towards women and violence.

Minister for the Prevention of Family Violence Fiona Richardson said existing data was patchy and a comprehensive index would help authorities understand what was working and where resources were needed.

She said domestic violence in Victoria had gone "beyond crisis point" and MPs trying to stamp it out still have no comprehensive measure to tell them what worked.

The government has commissioned Australia's National Research Organisation for Women's Safety to advise on what indicators should form the proposed index.