Is there simple calculator to know no. of sectors of a disk when size is entered.
Often I need to reduce size of larger disk & this tool will be helpful. It will be also useful to create a virtual volume in DE .

how about using a simple excel sheet

That's just simple arithmetic, isn't it?

Just use the calculator that comes with your Windows version.

_________________
A backup a day keeps DR away.

Assuming that all that is required is a "tool" to divide a number by 512 or 4096, then Google's calculator is another option.

http://www.google.com.au/search?q=1+TB+/+512+B
http://www.google.com.au/search?q=100+GiB+/+512+B
http://www.google.com.au/search?q=500+GB+/+4096+bytes

_________________
A backup a day keeps DR away.

Thanks both fzabkar & jermy

I have found this details in http://thestarman.narod.ru/asm/mbr/DriveOffsets.htm
article also shows what is cluster size & file system details. Interesting read.
Attaching disk size tables.

As your chart mentions, this is only correct for drives of "exactly" the size mentioned and only for 512 byte sectors. I wouldn't rely on that chart if you need to know how many sectors are on a drive of a specific size. Most drives have at either LBA or CHS values on them. The LBA will equal the number of 512-byte sectors on the drive. Or multiply C*H*S to find the number of sectors. If you need to create a virtual disk or volume and just need the number of sectors to enter, then the chart should be fine.

yes agree
here are some of the calculators --

http://www.t1shopper.com/tools/calculate/
http://www.csgnetwork.com/mediasizecalc.html
http://www.dr-lex.be/info-stuff/bytecalc.html

A relatively simple topic , but I am getting different sizes in different locations --
As per fzabkars calculator -- 19531250 & 156250000 -- 2 different counts
as per Seagate - 156301488

160GB SATA has exactly - 312581808 sectors so 80 Gb should have -156290904


which one is correct ?