# Re: how to calculate kt/v
**URL:** https://forums.homedialysis.org/t/re-how-to-calculate-kt-v/335
**Category:** HD For Patients
**Created:** [July 10, 2005, 8:15pm UTC](https://forums.homedialysis.org/t/re-how-to-calculate-kt-v/335 "2005-07-10T20:15:26Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@system](https://forums.homedialysis.org/u/system)
#### Post date: [July 10, 2005, 8:15pm UTC](https://forums.homedialysis.org/t/re-how-to-calculate-kt-v/335/1 "2005-07-10T20:15:26Z")
Hi, I know this might sound silly, but even though my husband has been on dialysis for 3 years. I dont know how to calculate the kt/v. I know how to do a URR calculation… with pre & post results, but I have been reading and the kt/v is a better indication of good dialysis. So, could someone please tell me how to do this.
I understand it has to with dialysis clearance/time/weight. Is the dialysis clearance obtained from a pre/post blood test or not?
thanks in advance
Queenie
:oops:
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### Author:  [@system](https://forums.homedialysis.org/u/system)
#### Post date: [July 10, 2005, 9:16pm UTC](https://forums.homedialysis.org/t/re-how-to-calculate-kt-v/335/2 "2005-07-10T21:16:57Z")
I found two free on-line Kt/V calculators (one from India?!) at:
[http://www.medindia.net/doctors/Clinical\_cal/ktv.asp](http://www.medindia.net/doctors/Clinical_cal/ktv.asp).
and also one on a very reputable site for doctors:
[http://www.hdcn.com/calc.htm](http://www.hdcn.com/calc.htm)
Someone named John Flanders offers free Kt/V software if you email him at [jef@islandnet.com](mailto:jef@islandnet.com).
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### Author:  [@Gus](https://forums.homedialysis.org/u/Gus)
#### Post date: [July 11, 2005, 10:12am UTC](https://forums.homedialysis.org/t/re-how-to-calculate-kt-v/335/3 "2005-07-11T10:12:33Z")
> [@Anonymous](#):
>
> I found two free on-line Kt/V calculators (one from India?!) at:
> [Dialysis Efficiency (Kt/V) Calculator](http://www.medindia.net/doctors/Clinical_cal/ktv.asp).
>
> and also one on a very reputable site for doctors:
> [http://www.hdcn.com/calc.htm](http://www.hdcn.com/calc.htm)
>
> Someone named John Flanders offers free Kt/V software if you email him at [jef@islandnet.com](mailto:jef@islandnet.com).
Hey cool sites, handy little tool there…thanks for posting this… 8)
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### Author:  [@LMG](https://forums.homedialysis.org/u/LMG)
#### Post date: [July 11, 2005, 8:19pm UTC](https://forums.homedialysis.org/t/re-how-to-calculate-kt-v/335/4 "2005-07-11T20:19:31Z")
Thanks for the info. I didn’t know how to figure kt/v either. 🙂
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### Author:  [@system](https://forums.homedialysis.org/u/system)
#### Post date: [July 12, 2005, 5:10am UTC](https://forums.homedialysis.org/t/re-how-to-calculate-kt-v/335/5 "2005-07-12T05:10:47Z")
Thanks Gus 🙂 I will try using one of those.
Queenie