Feet to Meters Converter

Yes, exactly. The 1959 international yard and pound agreement, signed by the US, UK, Canada, Australia, New Zealand, and South Africa, fixed the international yard at exactly 0.9144 m. Dividing by 3 gives 1 foot = 0.3048 m with no rounding at all. The same agreement also pins 1 inch at 0.0254 m and 1 mile at 1,609.344 m. Every length in the calculator chains off that one defined ratio, so feet, inches, yards, and miles all convert to metric without any measurement uncertainty in the factor itself.

Divide feet by 3.28 for a working answer, or by 3.28084 for full precision. The faster shortcut is to take a third of the foot value and subtract roughly 9 percent: 6 ft becomes 6 / 3 = 2, minus about 9 percent, which lands near 1.83 m (the exact value is 1.8288 m). Going the other way, multiply meters by 3.28 (or by 3 and add 10 percent) to get feet: a 5 m ceiling is roughly 5 x 3 + 5 x 0.3 = 16.5 ft, against an exact value of 16.4 ft.

Grade describes difficulty, not height, but the two often correlate by discipline. A bouldering V0 to V17 problem usually sits between 8 and 15 ft (2.4 to 4.6 m), with highballs reaching up to 30 ft (9 m) before the route becomes a free-solo. Sport climbing routes graded 5.10a to 5.10d on the Yosemite Decimal System tend to run 40 to 80 ft (12 to 24 m) on a single pitch; the letter suffix (a to d) sub-divides the same number grade by difficulty rather than length. Multi-pitch traditional routes can stack ten or more pitches together and reach 1,000 ft (305 m) or more, where every meter has to be counted on the rope.

The US Survey foot was defined as 1200 / 3937 m, which is roughly 0.30480061 m. The international foot, set by the 1959 agreement, is exactly 0.3048 m. The two differ by about 2 parts per million, or about 1 cm over 5 km, which is negligible for everyday work but big enough to dislocate geodetic survey markers if you mix the two. The US National Geodetic Survey, NIST, and NOAA retired the US Survey foot for federal use on 1 January 2023; the international foot is now the only standard. This converter uses the international foot, which is what every modern tape measure, building code, and aviation chart references.

Historical inertia, mostly. A 25 yd pool is 22.86 m (75 ft), almost a meter shorter than the FINA-now-World-Aquatics short-course standard of 25 m (82 ft). US high schools and many community pools were built to the imperial measurement decades before short-course meters became the international racing standard, and rebuilding a pool to add 2 m of length is rarely cost-effective. The result is two parallel record books: short-course yards (used by US college and high-school competition) and short-course meters (used by World Aquatics). A 100 yd freestyle is therefore a different race from a 100 m freestyle, and times do not transfer directly.