If you don't know about SteemNow by @penguinpablo you should, it's a great tool to see all of your progress on Steemit and has some cool features.
One feature you might not have noticed is a cool upvote calculator. A great tool if your thinking about using @minnowbooster to buy some delegated steempower.
You can find it here.
Once you click the little calculator you enter any amount of steempower and find out the value of your upvote at any voting percentage. Very handy if you use @minnowbooster and want to know will it be worth it.
It also shows you the reward pool balance and recently claimed rewards.
Check it out!