How can I convert violin notes to cello notes?
It is not so tricky how it seems. It would be best if you remember some rules. Cello strings are tuned A, D, G, and C from the thickest string to thinnest. The violin is tuned to G, D, A, and E. The G string on a cello is a full octave lower than that of a violin. My daughter started playing violin and then cello and said it is difficult to start, but everything after that makes sense. I bought her the violin from https://www.stradviolin.com/product-category/instruments/violins/, and the strings are so perfect. She enjoys the sound a lot! That learned, with practice, will become a lot easier to play in different notes.
What the first person meant is that you will have to convert everything that’s on the violin’s E string to the cello’s A string, everything that’s on the violin’s A string to the cello’s D string, and so on. So for example, the A above middle C on the violin part becomes an open D on the cello. But if you’re playing with other people, that means they’ll all have to change key as well, which could be awkward. If this is the case, then the open E will correspond to the E on the cello’s A string, 1st finger in 4th position as toutvas bien said. If this starts to make everything too high for you, try transposing the very high parts down another octave, making this E the 1st finger on the D string. Hope this makes sense.