The simple answer is no.
If saving lives is something that sounds exciting and rewarding to you, or if you are not the type to sit at a desk all day long, you may want to consider a career as an Emergency Medical Technician. However, due to the nature of the medical industry, you cannot legitimately become an EMT by taking online classes. In order to become a certified EMT, you must enroll in classes, as there is no current program which allows for EMT online certification. Becoming an EMT requires life-saving techniques, so you must be willing to go through hands-on training that is required to be completed in person.
The National Registry of Emergency Medical Technicians (NREMT) is the entity that certifies EMTs, and it is unlikely that they will ever allow for certification to be done completely online. Skills that are acquired in order to become an EMT are best learned in a real life setting. There are websites claiming to offer EMT online certification, but these are not legitimate programs. They will only take your money.
Once you have completed EMT classes, testing, and obtained EMT certification, you will be required to complete continuing education classes. If your schedule does not allow for classroom attendance, you may enroll in EMT online classes for continuing education.
These classes let you work at your own pace from the privacy of your own home. You will also be required by the NREMT to become re-certified every 2 years. This, too, can be done via an EMT online re-certification program. You will be required to complete 36 hours of course material for re-certification, as well as 36 hours of continuing education, which must be repeated every 2 years. The NREMT allows 24 hours of continuing education and 10 hours of refresher material to be completed online.