Below is a Dollar Cost Averaging Calculator. The inputs are as follows:

1. Total Investment amount – This is the total amount you want to invest
2. Number of Purchases – This is how many transactions you want to make (i.e 12 would be 1 a month. 24 would be 2 a month etc)
3. Purchase Interval – This is how often you want to invest in Days. So if you wanted to invest every month put 30 as the interval if you wish to twice a month put 14 etc.
4. Expected Return- Your expected annual return (Market is usually around 7% Annually)