The 33-year-old stormed to Britain's third gold of the night in the Olympic Aquatics Stadium, finally clinching the top prize following a haul of four bronze medals in the past two Games.
Rodgers was visibly shocked by the result, and revealed afterwards that the thought of a gold medal was not on her mind going into the race.
"It's certainly a nice thing to have, yeah! I'm going to enjoy the podium. I just can't believe it. I literally can't believe it," she told Sports Mole.
"I honestly thought going for silver, I qualified second, we'll see what happens. That's what I was aiming for. I did not ever expect that in my wildest dreams.
"I just try my best to do as well as I can. It's all about personal best, which is what we're aiming for. We've got a great team behind us, great coaches, I've got great coaches back at home - Tony and Keith - they're going to be over the moon."
Rodgers, who also won a bronze in the 50m freestyle on Friday, could further added to her medal tally in the 400m and 100m freestyle events.