When the Excalbian who appeared as Abraham Lincoln first contacted the USS Enterprise in 2269, he inquired to Captain James T. Kirk if they still measured time in minutes, Kirk assured him that they could convert to it.
Later, while speaking in terms familiar to "Lincoln", Spock referenced the altitude of the USS Enterprise at he qualified the measurements he spoke of – 643 miles, 2,021 feet, and 2.04 inches – to be "using your old-style measurements." (TOS: "The Savage Curtain")
When Amelia Earhart toured USS Voyager in 2372, and while visiting the bridge, asked Tom Paris how fast the ship could go. Paris replied, "Warp 9.9. In your terms, that's about 4 billion miles a second." (VOY: "The 37's")