Convert Length from US Survey Feet to Yards (ft-us to yd)

US Survey Foot to Yard Conversion Formula

Example

Let's convert 5 US Survey Foot (ft-us) to Yard (yd).

Using the formula:

Therefore, 5 US Survey Foot (ft-us) is equal to 1.66667 Yard (yd).

How many us survey feet are in one yard? One Yard (yd) contains 2.999994000011999976 US Survey Feet (ft-us) — the inverse of the factor above. Multiplying by 0.333334 takes you from us survey feet to yards; multiplying by 2.999994000011999976 brings you back.

Put in words: one us survey foot equals 0.333334 yards, so the us survey foot is the smaller unit of this pair. Converting between them never changes the amount of length being measured — only the size of the unit you count it in.

What is a US Survey Foot (ft-us)?

The US Survey Foot is a unit of length historically used for land surveying in the United States.

It is very close in length to the international foot, equaling approximately 1.000002 international feet (ft). The plural form is US Survey Feet.

Where Did the US Survey Foot Come From?

The origin of the US Survey Foot dates back to the Mendenhall Order of 1893. This order defined the relationship between the meter and US customary units.

It established that 1 meter is precisely equal to 39.37 inches. From this relationship, the US Survey Foot was derived, defined as 1200/3937 meters.

This definition differs slightly from the international foot, which was established in 1959 and is defined as exactly 0.3048 meters.

Why Was the US Survey Foot Replaced?

To simplify measurements and prevent confusion, the National Institute of Standards and Technology (NIST) and the National Geodetic Survey (NGS) made a critical change.

They officially retired the U.S. Survey Foot on December 31, 2022.

Surveying and mapping applications in the United States will now use the international foot. This critical change helps unify the National Spatial Reference System (NSRS) and prevents costly errors in large-scale projects.

Why Did This Small Difference Cause Big Problems?

While the difference between a US Survey Foot and an international foot is minuscule—only about two parts per million—it becomes significant over large distances.

For every mile, the discrepancy adds up to approximately 1/8 inch.

This minor error may not be significant for a backyard fence. However, for massive construction projects and infrastructure development, such as bridges that cross state lines, the accumulated error can lead to severe misalignments and costly mistakes.

What is a Yard?

A yard (yd) is a unit of length in the imperial and US customary systems of measurement.

A yard is equal to 3 feet (ft) or 36 inches.

Where Did the Yard Come From? A Royal History

The history of the yard is traditionally linked to English monarchs. According to folklore, King Henry I of England (reigned 1100-1135) decreed that a yard should be the distance from the tip of his nose to the end of his outstretched thumb.

While this story is popular, the unit's origins likely date back to the Anglo-Saxons and were later standardized by various royal decrees and physical "yardsticks."

How Long is a Yard? Metric and Imperial Conversions

In 1959, an international agreement defined the yard as precisely 0.9144 meters.

This global standardization of the unit ensures consistent conversions between the imperial and metric systems.

To summarize the key yard conversions:

• 1 yard = 3 feet
• 1 yard = 36 inches
• 1 yard = 0.9144 meters

Where is the Yard Still Used Today?

Although most of the world uses the metric system, the yard remains essential in some places—especially the United States and the United Kingdom.

It's the standard unit in American and Canadian football, commonly used in the textile industry to sell fabric, and often used to measure distances on golf courses.

US Survey Foot to Yard Conversion Table

Here are some quick reference conversions from US Survey Foot (ft-us) to Yard (yd):