Yes, if you have a convertible term life insurance plan it offers the option to convert your temporary life insurance coverage to permanent life insurance, if requested by a specific date stated in your life insurance policy.
In order to convert your term coverage you will need to contact your life insurance company (or agent) and request in writing the conversion of your term policy to permanent coverage.
The premium you pay for your permanent coverage will be much higher than you paid for your temporary (term) life insurance, and will be based on your age at time of conversion.
Learn more about term life conversion to whole life insurance.