<p>About four kilometers, see, for example:
<a href="http://www.mbgnet.net/salt/oceans/data.htm" rel="nofollow">http://www.mbgnet.net/salt/oceans/data.htm</a> 
But bear in mind that much of the oceans, especially in the southern hemisphere, have scarcely been mapped at all, so it is currently impossible to give an accurate estimate. </p>

CC BY-SA 3.0
2017-01-06T21:06:07.287Z
Surprised.  Would think they'd send wavelengths that are scattered by rock but not water from satellites and get a pretty solid picture.
JeopardyTempest
CC BY-SA 3.0
2016-07-04T07:10:37.303Z
2016-07-04T07:10:37.303Z
Gordon Stanger
<p>From NOAA: (Official US Science) A recent estimate for the average depth of the ocean is 3,682 meters, or 12,080 feet.
This is an estimate from 2010. Older estimates have deeper average ocean.</p>

CC BY-SA 3.0
2017-01-06T00:40:27.873Z
please provide a link to your source
arkaia
CC BY-SA 3.0
2017-01-05T23:37:33.377Z
2017-01-05T23:37:33.377Z
nobodysknowledge
<p>We know that the ocean depth is varies from ocean to ocean. Mariana trench is about 11 km deep. If we consider as a whole, what is the average depth of the ocean?</p>

CC BY-SA 3.0
2016-07-04T06:57:33.530Z
The average depth of the Pacific Ocean or of the global oceans?
daniel.heydebreck
CC BY-SA 3.0
2016-07-04T06:58:14.930Z
It is global ocean
Dinidu Hewage
<oceanography><bathymetry>
What is the average depth of the ocean?
Dinidu Hewage
# What is the average depth of the ocean?

(Asked by: username_0 on 2016-07-04)

We know that the ocean depth is varies from ocean to ocean. Mariana trench is about 11 km deep. If we consider as a whole, what is the average depth of the ocean?

**Tags:** oceanography, bathymetry

> **Comments:**
> **username_1**: The average depth of the Pacific Ocean or of the global oceans?  
> **username_0**: It is global ocean  

---

## 2 answers

### Answer by username_2 on 2016-07-04. Score: 4 | Accepted answer

About four kilometers, see, for example:
<http://www.mbgnet.net/salt/oceans/data.htm>
But bear in mind that much of the oceans, especially in the southern hemisphere, have scarcely been mapped at all, so it is currently impossible to give an accurate estimate.

> **Comments:**
> **username_3**: Surprised.  Would think they'd send wavelengths that are scattered by rock but not water from satellites and get a pretty solid picture.  

---

### Answer by username_4 on 2017-01-05. Score: 2

From NOAA: (Official US Science) A recent estimate for the average depth of the ocean is 3,682 meters, or 12,080 feet.
This is an estimate from 2010. Older estimates have deeper average ocean.

> **Comments:**
> **username_5**: please provide a link to your source  

---

