I am new to mining cryptocurrencies. I am planning to set up a wallet for both Litecoin and Dogecoin. I am just curious on asking what are the current total blockchain sizes of both coins? This is to prepare me to download them ahead of time.
Bitinfocharts.com lists stats for the main cryptos including the block chain size. You will find "Blockchain size" near the bottom.
You can go to http://block-explorer.com/ and http://dogechain.info/ to see the latest number of each currency. In each blockexplorer the latest block is in the first row so you can see the total amount of blocks from the id of this block.
As of now(25th Dec. 2013) Litecoin is roughly 500000 blocks and Dogecoin 30000 blocks.
From an estimation of my dogecoin wallet the average block is about 30 MB (based on 2,4 GB data and 77000 blocks) but it highly depends on the current amount of transactions.
https://bchain.info/LTC/ has blockchain size in lower right hand corner.