**What is the longest unit of measurement for distance?** What is the biggest unit of distance? Ans: **The parsec** is the biggest unit of distance that is used to measure the distance between the astronomical objects that are outside the solar system.

**What measures is the longest?** **Kilometers** are the longest unit of metric measurement. The abbreviation for kilometers is ‘km”.

**Which one is bigger cm or MM?** Millimeter **A millimeter is 10 times smaller than a centimeter**. The distance between the smaller lines (without numbers) is 1 millimeter. 1 centimeter = 10 mm.

**What is the biggest unit of weight?**

**1 gigatonne** |
**(Gt)** |
=1 000 000 000 000 000 g |

1 tonne |
(t) |
=1 000 000 g |

1 kilogram |
(kg) |
=1 000 g |

1 gram |
(g) |
=1 g |

1 milligram |
(mg) |
=0.001 g |

## What is the longest unit of measurement for distance? – Additional Questions

### What is the longest dimension of an object to measure?

**The length** of an object is its extended dimension, that is, its longest side. For example, the length of the ruler in the picture is 15 cm.

### What is the order of metric units from smallest to largest?

**Here are the common metric units of length from smallest to largest.**

- A millimeter is the smallest unit. Millimeters are most useful when measuring really tiny things.
- A centimeter is the next smallest unit.
- A meter is a little more than 3 feet.
- A kilometer is used to measure longer distances.

### Which of the following is the longest or greatest unit of measurement?

We can define **a meter** as one thousand kilometers. It is the basic unit in the SI system that is equal to the distance light travels through a vacuum, exactly one by 299792458 seconds. Kilometre is a unit of length and the largest of all the other three given in the option.

### What’s after Picometer?

Picometers (pm), **femtometers (fm)**, and attometers (am) are all smaller than nanometers. How much smaller is one nanometer than a micrometer? A nanometer is 1,000 times smaller than a micrometer. In other words, one micrometer (μm) is 1,000 nanometers.

### What is bigger than a megameter?

The Numbers

The prefix is mega-, so a megameter is a **million meters**. Example: 10^{9} is a 1 followed by 9 zeros: 1,000,000,000 (a billion). The prefix is giga-, so a gigameter is a billion meters.

### What is bigger than a Terameter?

The Metric System

nanometer(nm) |
11,000,000,000 of a meter |

kilometer(km) |
1000 meters |

Megameter(Mm) |
1,000,000 meters |

Gigameter(Gm) |
1,000,000,000 meters |

Terameter(Tm) |
**1,000,000,000,000 meters** |

### What is a megameter?

Noun. megameter (plural megameters) US spelling of megametre. **An instrument for determining longitude by observation of the stars**. A micrometer.

### Are Megameters a thing?

**The megametre (Mm) is a unit of length in the International System of Units**, defined as 10^{6} metres using the SI prefix system. Megametre is rarely used. It could be used to specify long distances around the world as well as specifying the sizes of the worlds.

### How small is an Attometer?

An attometer is a unit of measurement equal to **10**^{–}^{18} meters. Things that have a size of 1 attometer are electrons, up quarks, down quarks, and strings.

### What is 10 meters called?

10 meters = **1 dekameter** (dam) 10 dekameters = 1 hectometer (hm) = 100 meters.

### Which is longer km or miles?

1.609 kilometers equal 1 mile. The kilometer is a unit of measurement, as is the mille. However, **a mile is longer than a kilometer**. “Mile” is a bigger unit.