Answer a few questions to see an estimated yearly and monthly cost for level term life insurance. Final pricing is set by the carrier after full underwriting.
It lets you switch your term policy into a permanent life insurance policy later, without a new medical exam or health questions. The permanent policy is priced on your age when you switch, not on any change in your health.
It's useful if your health changes and you still want lifelong coverage. Convertible term costs a little more than non-convertible term.