# any body have w%w to ppm Calculator

#### edaquascape

##### New Member
Hello how is everyone

In all commercial fertilizers they write down only the percentage of fertilizer analyzes
And many of them do not write how many parts per million add fertilizer in the specified dose

I was looking for a way to calculate and found on a website a guide on how to calculate the parts per million by percentage and fertilizing dose

I made an excel file as a simple calculator for this
I don't know if this idea has been published before or is there in the original computers on websites.
Anyone who wants this calculator send it to them i cant attach excel file or can add to Rotala Butterfly Calculators
the photo under post
Thanks to all • Allwissend

#### Allwissend

##### Super Moderator
Staff member
Moderator
Thank you for sharing.

Here is a quick way that I apply - The percentage number multiplied by 10 is the result in mg/L I will get from adding 1mL of solution to 1L. Example :

6.12 * 10 = 60.12 mg/L

Then it's just the simple math multiply with the dose divide by the volume

It's a nice-to-have in a calculator nevertheless.

• edaquascape

#### edaquascape

##### New Member
Thank you for sharing.

Here is a quick way that I apply - The percentage number multiplied by 10 is the result in mg/L I will get from adding 1mL of solution to 1L. Example :

6.12 * 10 = 60.12 mg/L

Then it's just the simple math multiply with the dose divide by the volume

It's a nice-to-have in a calculator nevertheless.
Yes, in fact, it is a simple arithmetic process, as you said. However, I was ignorant of it until I searched and wanted to make something simpler by making this calculator.