Introduction
Net worth is one number: everything you own minus everything you owe. It sounds simple, and it is. The reason most people do not know theirs is not that the math is hard, it is that the pieces are scattered across a dozen accounts, statements, and logins.
Set aside an hour. Pull up what you have, write the numbers down once, and you will have a baseline you can update in five minutes from then on.
Start With What You Own
List every asset and the current value of each. Checking and savings balances. Retirement accounts. Brokerage accounts. The market value of your home, not what you paid for it. Vehicles, at what you could realistically sell them for today. Anything else of real value you could convert to cash.
Estimates are fine. A number that is roughly right and written down beats an exact number you never look up. You can refine it later.
Then Subtract What You Owe
Now the other side. Remaining mortgage balance. Student loans. Credit card balances you are actually carrying. Auto loans. Personal loans and anything else outstanding. Subtract the total from your assets, and the result is your net worth.
Conclusion
The number itself matters less than the direction it moves. A single snapshot tells you where you are. A year of snapshots tells you whether what you are doing is working. Update it monthly and let the trend do the talking.