Assets

Checking, savings, emergency fund
401k, IRA, brokerage accounts
Primary home equity, rental properties
Vehicles, valuables, crypto

Liabilities

Remaining mortgage principal
Auto loan balances
Total credit card balances
Student loans, personal loans

Developers: this data is available as a free JSON API → API docs

Free calculator by Kultranz
Developers: the data behind this widget is a free JSON API → API docs