Stock Average Calculator

Calculate your stock average price fast. Simple, accurate, no hassle.

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Tool Icon Stock Average Calculator

Stock Average Calculator

Calculate the average buy price of your stocks after multiple purchases

Primary Purchase Details
Enter your initial entry position details above
Second Purchase (Averaging Down/Up)
Calculation History:
No calculations saved yet
Investment Concepts:
Averaging Down

Buying shares as the price drops to lower your average cost.

DCA

Dollar-Cost Averaging: investing fixed amounts regularly.

Breakeven

The price where your investment neither gains nor loses money.

How to Use:
  1. Enter the stock symbol and your first purchase details.
  2. Add your second and/or third purchase quantities and prices.
  3. Click "Calculate Average Price" to see the weighted average.
  4. Use "Save" to keep track of different stock calculations in your history.

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About This Tool

Look, I get it—tracking your stock purchases isn’t exactly thrilling. But if you’ve bought shares at different prices over time, figuring out your actual average cost per share? That’s where things get messy. That’s why I built this Stock Average Calculator. It’s not fancy. No animations, no pop-ups. Just a simple way to plug in your buys and see what you’re really working with.

I’ve been investing for years, and I used to do this math in my head or on a crumpled-up napkin. Then I realized: why not make it easier? So I whipped this up. It’s the tool I wish I had when I started.

Key Features

  • Enter multiple buy prices and quantities—no limit.
  • Instantly see your weighted average cost per share.
  • Shows total amount invested and total shares owned.
  • Works for stocks, ETFs, or anything you buy in chunks.
  • No sign-up. No tracking. Just open it and use it.
  • Mobile-friendly. Works on your phone during lunch break.

FAQ

Why do I need this if my broker shows my average cost?
Some brokers do. Some don’t. And honestly? Sometimes their numbers lag or get reset after transfers. This gives you a second opinion—one you control.

Can I use this for crypto or other assets?
Sure. It’s just math. As long as you’re buying something in batches at different prices, this’ll work. I’ve used it for crypto, gold ETFs, even collectibles. Just don’t ask me to calculate your emotional investment.