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Depending on what you want to know, I have two answers...

1. If you unwound and tied together the strands of DNA in one of your cells, it would stretch up to six feet, but they would only be 50 trillionths of an inch.

2. If you could unwrap the DNA you have in all the cells in your body, you would be able to reach the moon and back 6,000 times.

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12y ago
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13y ago

The exact length has been debated, but the best answer is that a human cell's DNA is about 3 meters in length.


If completely unraveled, human DNA would stretch from the Earth to the Moon.

If you stretch it and not unravel it, the distance is on average about 6 ft. (2 m) long, but is a very thin thread.

The single human chromosome on average consists of DNA molecules approximately 2 inches long.

The Physics Factbook [see link below] gives the formula of:

"The length is (length of 1 bp)(number of bp per cell) which is (0.34 nm)(6 ×109)"

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12y ago

Around 3 billion miles

Most sources estimate the number of cells in a human body to be from 5-10 trillion cells. In a human body with 10 trillion cells, the length of DNA would be around 37 billion miles...enough to go to the sun and back about 200 times. It would take 2 days and 7 hours to get to the other end if you were going at the speed of light.

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Q: If you uncoiled the DNA in a human cell how long would it be?
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Long strands of DNA that are uncoiled?

Chromatin are long, uncoiled strands of DNA. Chromatin contain the genetic information of the cell. Cytoplasm is the clear fluid or gel that surrounds the organelles outside the nucleus.

How long is interphase in a human liver cell?

It depends on the type of cell, and the organism the cell is from. A mammal spends approximately 90%/20 hours of its time during cell division in interphase.

What is the shortest cell in human body?

There are a number of contenders for the position of smallest cell in the human body. The head of the sperm is on average 5 to 6 micro meters. The flagellum is up to 50 micrometers long. Also some says Granule Cell of the Cerebellum is the smallest cell of the human body it is approximately 4um to 4.5um in size. The size of the RBC also found as around 5 micrometers. In terms of volume most of the scientists suggest that sperm is the smallest cell.

What type of cell is the longest in the human body?

The longest cells are neurons (nerve cells) with a length of 90cm-100cm linking the central nervous system (brain and spinal cord) to other parts of the body.

What type of cell is the longest cell in the body?

A tactile (touch) sensory neuron of the toes would stretch from the toe all the way to the medulla (lowest part of the brainstem). The dendrites would extend from the toe to the lower end of the spinal cord, where its cell body would be in the dorsal root ganglion, and from there the axon continues all the way to the medulla in the brainstem. So, in a person who's 6 feet tall the cell could be over 5 feet long.

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