The age of consent in Canada is 16 years. This is the age that criminal law recognizes the legal capacity of a young person to consent to sexual activity. Generally, it is legal to have sexual contact with someone who is 16 years or older if they agree to have sex with you.

Is it illegal to date a 16 year old when your 18 in Canada?

In Canada that age is 16 years old. This means that as long as someone is 16 years old and the sexual activity is consensual, there is no criminal liability. So, for example, a 14 year old can have sex with someone up to 18 years old (as long as the age gap is less than 5 years).