Meter to Foot
m
ft
Conversion History
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Quick Reference Table (Meter to Foot)
| Meter (m) | Foot (ft) |
|---|---|
| 1 | 3.28083989501312335958 |
| 5 | 16.4041994750656167979 |
| 10 | 32.8083989501312335958 |
| 100 | 328.08398950131233595801 |
| 500 | 1,640.41994750656167979003 |
| 1,000 | 3,280.83989501312335958005 |
About Meter (m)
The meter (m) is the SI base unit of length and the foundation of the entire metric system. Since 2019 it is defined by fixing the speed of light at exactly 299,792,458 m/s in a vacuum — one of the most precisely defined units in existence. Originally conceived in 1793 as one ten-millionth of the distance from the equator to the North Pole through Paris, it has since been redefined multiple times for ever-greater precision. Nearly every country in the world uses the meter as its legal standard of length.
An interior door is about 2 meters tall. A typical car is 4–5 meters long. An Olympic swimming pool is exactly 50 meters in length.
Etymology: From Greek "metron" (measure). Adopted into French as "mètre" during the French Revolution and subsequently codified as the international SI base unit.
About Foot (ft)
A foot (ft) is a unit of length in the imperial and US customary systems, defined as exactly 12 inches or 0.3048 meters. It is the primary unit for human height in the United States and the global standard for altitude in aviation — aircraft worldwide report altitude in feet. Construction lumber dimensions, room sizes, and ceiling heights in the US are nearly always specified in feet and inches. One foot is also the basis for the nautical fathom (6 feet).
An average adult male is about 5 feet 9 inches tall. A standard residential ceiling is 8 feet high. Commercial aircraft cruise at around 35,000 feet.
Etymology: Named after the human foot. Old English "fōt" traces to Proto-Germanic "fōts", cognate with Latin "pes" and Greek "pous" — all meaning foot.
Meter – Frequently Asked Questions
What is a meter?
The meter (m) is the SI base unit of length. Since 2019 it is defined by fixing the speed of light at exactly 299,792,458 meters per second in a vacuum, making it one of the most precisely defined units in science.
How long is a meter?
A meter is about 3 feet 3 inches — roughly the height of a doorknob from the floor, or the length of a standard guitar. An adult's walking stride is approximately 0.8 meters, and a standard door is about 2 meters tall.
What is the difference between "metre" and "meter"?
"Metre" is the standard British and internationally recognized spelling used by the SI and most of the world. "Meter" is the American English spelling. Both refer to the exact same unit — the difference is purely linguistic.
Why was the meter redefined using the speed of light?
The original meter was a physical platinum-iridium bar stored in Paris. Physical objects can change subtly over time — scratches, temperature variation, or handling affect their length. Redefining the meter through the speed of light (a fundamental constant) makes it perfectly reproducible anywhere in the universe from first principles, with no physical artifact that could be damaged, lost, or drift over time.
Why does aviation measure altitude in feet rather than meters?
Aviation adopted feet as the altitude standard through early US and British dominance in aircraft manufacturing and air traffic control. When international civil aviation procedures were standardized in the 1940s–50s, feet were already deeply embedded in flight instruments, training, and procedures. Changing all aircraft altimeters and ATC systems globally has never happened due to safety risk and cost — so feet remain the international aviation standard even in countries that otherwise use metric.
Foot – Frequently Asked Questions
How long is a foot?
A foot is exactly 12 inches or 0.3048 meters — about the length of a standard 30 cm ruler. An average adult male foot is close to, but not exactly, one foot (typically 10–11 inches).
How many feet are in a mile?
Exactly 5,280 feet equal one mile. There are 3 feet in a yard, 6 feet in a fathom, and 660 feet in a furlong. The 5,280 number originates from 8 furlongs of 660 feet — a historical land measurement system.
Why is lumber sold as "2×4" when it doesn't actually measure 2 by 4 inches?
A "2×4" starts as a rough-sawn board measuring 2 inches by 4 inches. After kiln-drying and planing smooth, it shrinks to 1.5 × 3.5 inches. The lumber industry kept the nominal (pre-planing) names because sawmills had used them for over a century. A 2×6 is really 1.5 × 5.5 inches, a 2×8 is 1.5 × 7.25 inches, and so on. The convention frustrates DIYers but is so deeply embedded in building codes and construction practice that changing it would require rewriting thousands of structural engineering tables.
Why does the US express height in feet and inches while metric countries use centimeters?
The US retained imperial units after independence from Britain, and feet-and-inches became culturally entrenched in medical records, sports statistics, and everyday conversation. Metric countries typically express height as a single centimeter number — "175 cm" — which is simpler than "5 feet 9 inches." The US has no legal requirement to switch, so the convention remains unchanged.
What is the difference between the international foot and the US survey foot?
The international foot (used everywhere) is exactly 0.3048 meters. The US survey foot is slightly different: exactly 1200/3937 meters ≈ 0.30480061 meters. The difference is about 2 parts per million — negligible for most purposes, but detectable over long surveying distances. The US survey foot was officially retired in 2023; the international foot is now the US legal standard for all purposes.