Sweden once had some fairly extensive narrow-gauge networks, but most narrow-gauge railways are now closed. Some were physically converted to 1,435 mm (4 ft 8+1⁄2 in) standard gauge (the latest one the line between Berga and Kalmar in the 1970s) and some remain as heritage railways. The most common narrow gauge, 891 mm (2 ft 11+3⁄32 in) (3 Swedish feet), exists only in Sweden. A smaller 3 ft 6 in (1,067 mm) gauge network existed, and 600 mm (1 ft 11+5⁄8 in) gauge was used mostly by smaller, industrial railways.
Still other but lesser used gauges in the country were 693 mm (2 ft 3+9⁄32 in), 802 mm (2 ft 7+9⁄16 in), 1,099 mm (3 ft 7+1⁄4 in), 1,188 mm (3 ft 10+25⁄32 in) and 1,217 mm (3 ft 11+29⁄32 in),[1] all converted or removed.