What is 20.5GB in megabytes?

[RSI]

How many megabytes is 20.5GB exactly (no, I don't want to hear "20500 megs&quot? Thanks.

-RSI

 

[Moonbeam]

I'm gonna guess 20992 but some of it's gonna go to MBR and stuff so it will not all be available.

 

[Prodigy^]

I think it's

20.5·10^9 / 1024 / 1024 = 19550 Mb

Edit: I'm very, very sure

 

[Vinny N]

You mean how many bytes is 20.5 gigabytes?

20.5 gb = 22,011,707,392 bytes

(20.5 x 1024^3)

or Hard Disk Drive manufacturer's definition?

20.5 gb = 19,092,112,779 bytes

(20.5 * 1000^3 / 1024^3)

And if you're really talking about hard drives, it could vary with the actual platter size and how the manufacturer is rounding off that.

 

[Prodigy^]

not to be rude, but the topic says

"What is 20.5GB in megabytes?"

and you ask

"You mean how many bytes is 20.5 gigabytes?"

seriously!

nice calculations though, I didn't know the manufacturer's definition-thingy.

 

[403Forbidden]

how many bytes in 376.33 Terrabytes...exactly?

 

[Prodigy^]

dunno if you're joking, but

376.33 Tb = 376.33 x 1024^4 ~= 413,779,210,900,000 bytes

I can't tell the last 5 digits for sure as my calculator sucks

 

[403Forbidden]

thanks, but i need to know the last two digits...exactly

 

[Prodigy^]

ok then

413,779,210,880,942.08 bytes calc.exe 4ever!

 

[Quickfingerz]

20.5 x 1024 x 1024

What's wrong with your guys' math?

 

[Prodigy^]

I don't know Quickfingerz - what do you make of the figure

21495808

? It's certainly not the answer to RSI's question

 

[vanderStoep]

prodigy, where, can I get calc.exe?

 

[LXi]

LOL... in your Accessories.

 

[Tangman]

This almost seems rhetorical

 

[Prodigy^]

LMAO vanderStoep it's included with Windows, it's just the Calculator you'll find in Start Menu/Accessories

 

[vanderStoep]

Damn English versions of win98, you mean rekenmachine on mine. I hoped it was a nice small freeware calculating program which was easy to use, sorry.

 

[Eug]

Depends,

Strangely enough many manufacturers define 1 Gb as 1000 Mb, not 1024 Mb. The other problem is if they define 1 Mb as 1024 kilobytes or 1000 kilobytes. Note that 1 kilobyte is usually defined as 1024 bytes though.

Furthermore, the formatted space is not going to be same as the non-formatted space.

 

[Mark R]

20.5 Manufacturer's GB = 20,500 Manufacturer's MB
20.5 Manufacturer's GB = 20,019 Computer MB

20.5 Computer GB = 20,992 Computer MB
20.5 Computer GB = 22,011 Manufacturer's MB

 

[Charles]

Try Versaverter http://www.pawprint.net/vv/index.html

 

[Vinny N]

Prodigy:

Well I had my final answer in megabytes but did you notice what was in the content of the first message?

RSI says: "no, I don't want to hear "20500 megs"

So he must mean bytes right?

*razzes*

 

[dszd0g]

Man, I would have thought this was a simple problem. Sorry, I couldn't stand not seeing the complete correct answer posted yet.

20.5 Manufacturer GB = 20500 Manufacturer MB (not the answer he was looking for)
(20.5 * 1000)
20.5 Manufacturer GB = 19550 Computer MB
(20.5 * 1000^3 / 1024^2)
20.5 Computer GB = 22011 Manufacturer MB
(20.5 * 1024^3 / 1000^2)
20.5 Computer GB = 20992 Computer MB
(20.5 * 1024)

Mark R was the closest to getting the complete answer. Except he messed up on the math for Manufacturer GB -> Computer MB. He did 20.5 * 1000 / 1024. Prodigy had the right equation for that one (20.5 * 10^9 / 1024^2. Dividing by 1024 once produces KB and dividing twice produces MB. Manufacturer GB is also known as GB(SI) and Manufacturer MB is also known as MB(SI). Moonbeam had one of the correct answers too.

Quickfingerz's 20.5 Computer GB * 1024 * 1024 gives us 21495808 Computer KB, which definitely isn't megabytes.

As Eug pointed out, none of this tells anyone how much the disk can actually hold because the formatted space is always less. It can be pretty close if you are using a good filesystem though. This assumes that RSI was talking about hard drives. He could be talking about a system with 20.5GB of RAM for all I know. It could be a HP T600 with 2 8GB Collosus, 1 4GB Collosus, and 1 512 MB.