# Feet to Lightyears Converter

Select conversion type:

Rounding options:

Convert Lightyears to Feet (ly to ft) ▶

## Conversion Table

 feet to lightyears ft ly 10000000000000000 ft 0.3222 ly 20000000000000000 ft 0.6444 ly 30000000000000000 ft 0.9665 ly 40000000000000000 ft 1.2887 ly 50000000000000000 ft 1.6109 ly 60000000000000000 ft 1.9331 ly 70000000000000000 ft 2.2553 ly 80000000000000000 ft 2.5774 ly 90000000000000000 ft 2.8996 ly 100000000000000000 ft 3.2218 ly 110000000000000000 ft 3.544 ly 120000000000000000 ft 3.8662 ly 130000000000000000 ft 4.1884 ly 140000000000000000 ft 4.5105 ly 150000000000000000 ft 4.8327 ly 160000000000000000 ft 5.1549 ly 170000000000000000 ft 5.4771 ly 180000000000000000 ft 5.7993 ly 190000000000000000 ft 6.1214 ly 200000000000000000 ft 6.4436 ly

## How to convert

1 foot (ft) = 3.22181E-17 lightyear (ly). Foot (ft) is a unit of Length used in Standard system. Lightyear (ly) is a unit of Length used in Metric system.

## Foot: A Unit of Length

The foot (ft) is a unit of length used in the US customary system, which is one of the systems of measurement used in the United States and some other countries. The foot is equal to 12 inches or 0.3048 meter. The foot is also a derived unit in the imperial system, which is the official system of measurement for the United Kingdom and some other Commonwealth countries. The symbol for foot is ft or ′. The foot is used for measuring short distances and dimensions, such as the height of a person or the width of a door. The foot is named after the human foot, which was used as a standard of measurement in ancient times. In this article, we will explore the definition, history, usage and conversion of the foot as a unit of length.

## How to Convert Foot

The US customary system is a system of measurement that uses units such as inch, yard, mile, ounce, pound, gallon, etc. The US customary system is based on the English system of measurement that was used before the adoption of the metric system.

To convert foot to other units of length in the US customary system, we need to know the relationship between foot and other units. Here are some common units and their equivalent values in feet:

• 1 inch = 1/12 foot
• 1 yard = 3 feet
• 1 mile = 5280 feet
• 1 fathom = 6 feet
• 1 rod = 16.5 feet
• To convert foot to any of these units, we need to multiply or divide by the appropriate factor. For example, to convert 10 feet to inches, we need to multiply by 12:

10 feet x 12 = 120 inches

To convert 10 feet to miles, we need to divide by 5280:

10 feet / 5280 = 0.00189 miles

To convert 10 feet to fathoms, we need to divide by 6:

10 feet / 6 = 1.667 fathoms

To convert 10 feet to rods, we need to divide by 16.5:

10 feet / 16.5 = 0.606 rods

The SI system (or International System of Units) is a system of measurement that uses units such as meter, kilogram, second, ampere, kelvin, mole, candela, etc. The SI system is based on the metric system that was developed in France in the late 18th century.

To convert foot to other units of length in the SI system, we need to know the relationship between foot and meter. The meter is the base unit of length in the SI system and it is defined as “the length of the path travelled by light in vacuum during a time interval of 1/299792458 seconds.” One foot is equal to 0.3048 meters.

To convert foot to any other unit of length in the SI system, we need to multiply or divide by the appropriate power of ten and add a prefix. Here are some common units and their equivalent values in meters:

• 1 kilometer = 1000 meters
• 1 centimeter = 0.01 meter
• 1 millimeter = 0.001 meter
• 1 micrometer = 0.000001 meter
• 1 nanometer = 0.000000001 meter
• To convert foot to any of these units, we need to multiply by the appropriate factor and add a prefix.

## Lightyear: A Unit of Length

The lightyear is a large unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (9.46 × 10^12 km), or 5.88 trillion miles (5.88 × 10^12 mi). As defined by the International Astronomical Union (IAU), a lightyear is the distance that light travels in a vacuum in one Julian year (365.25 days). The lightyear is most often used when expressing distances to stars and other distances on a galactic scale, especially in non-specialist contexts and popular science publications.

In this article, we will explore the definition, history, usage and conversion of the lightyear as a unit of length.

## Example Conversions of Lightyear to Other Units

The lightyear can be converted to other units of length by using different factors and formulas. Here are some examples of conversion for different types of units:

• To convert a lightyear to kilometers, multiply by 9.46 × 10^12:

1 ly × 9.46 × 10^12 = 9.46 × 10^12 km

• To convert a lightyear to miles, multiply by 5.88 × 10^12:

1 ly × 5.88 × 10^12 = 5.88 × 10^12 mi

• To convert a lightyear to AU, multiply by 63,241:

1 ly × 63,241 = 63,241 AU

• To convert a lightyear to parsecs, divide by 3.26:

1 ly / 3.26 = 0.31 pc

• To convert a kilometer to lightyears, divide by 9.46 × 10^12:

1 km / 9.46 × 10^12 = 1.06 × 10^-13 ly

• To convert a mile to lightyears, divide by 5.88 × 10^12:

1 mi / 5.88 × 10^12 = 1.70 × 10^-13 ly

• To convert an AU to lightyears, divide by 63,241:

1 AU / 63,241 = 1.58 × 10^-5 ly

• To convert a parsec to lightyears, multiply by 3.26:

1 pc × 3.26 = 3.26 ly

Español     Russian     Français