That depends on you and the insurance company.
The insurance companies usually limit the amount of life insurance you may purchase to about 20 times your annual income.
However, some life insurance carriers offer up to $10,000,000 or more of life insurance.
Insurers don't want you to be over-insured, because that may give incentive for an insured to commit suicide to have their life insurance payout a death benefit. Most life insurance policies have a 2 year suicide exclusion, one year in some states.
Perhaps the best and easiest way to determine how much life insurance you really need is to use a life insurance needs calculator.
That way, your family is adequately protected and you don't pay for more life insurance than you really need.
And, you'll have peace of mind knowing your family has the financial security they need.