For documents

All nice, but at least on my phone Google tells me for Khmer the option is not available.

Same. It's available for some languages but not Khmer.

I don't know about documents but some have commented that Khmer is not an option when using Google translate.

If you use the Google translate app to speak Khmer to you, it will tell you that Khmer is not available, but if you use the web browser version (on your phone or a computer) it does speak the Khmer words to you when you want to translate words from English to Khmer.

This might be the case for documents also. Worth a try....

*
In this day and age, we have become accustomed to the benefits of technology, and how quickly things may be done using technology. But it all has to start somewhere.

Duncan wrote: ↑Tue Dec 17, 2019 10:35 am If I take a photo of a Khmer sign or document, then download it onto my laptop, can I use Google translate to translate it to English ?

If so, ,, how.

There's an alternative App for that. It's possibly not as quick as Google translate if google could translate it. However, it frequently is more accurate.
So, if you need to know now, then it may not be for you. This app may not fit on your mobile device, so any attempt to do so may invalidate the device' warranty.

If you have a little time to spare, then I offer you the

JamieLambo v1.0**
Simply take a photo
Submit
Sit back, and relax with a cold one/cup of tea***
Response times may vary as the JLV1.0 may be offline while being tweaked by specialists





*this reply is unlikely to assist the OP, more likely to raise his BP
**i might owe you another beer
***as directed

xandreu wrote: ↑Tue Dec 17, 2019 1:31 pm If you use the Google translate app to speak Khmer to you, it will tell you that Khmer is not available

Weirdly this used to work on my phone, then suddenly a couple of months ago Khmer voice output was not available, and more recently it has started working again.