Stock Average Calculator

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

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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

Alright, let’s cut through the noise. If you’ve ever bought a stock at $50, then panicked and bought more at $30 when it dipped, you’ve probably wondered: *What the hell is my actual average cost per share now?* That’s where a stock average calculator comes in. It’s not flashy. It won’t predict the market or make you rich overnight. But it will tell you exactly how much you’ve paid per share across multiple purchases—no guesswork, no spreadsheets, no headaches. I built this because I got tired of manually adding up shares and prices every time I averaged down. One too many late-night calculations with a calculator and a cold coffee, and I said, “There’s got to be a better way.” So here it is. Simple, fast, and actually useful.

Key Features

  • Multiple purchases? No problem. Add as many buy orders as you want—different prices, different quantities. It handles it all.
  • Instant average cost. Type in your numbers, hit calculate, and boom—you’ve got your true average price per share.
  • Total investment shown. Not just the average, but how much cash you’ve actually poured into the position.
  • No login. No tracking. Your data stays on your device. I don’t want it, and I definitely don’t store it.
  • Works offline. Lost signal at the airport? Still can figure out your cost basis before your next trade.
  • Mobile-friendly. Because let’s be real—you’re probably checking this on your phone while pretending to pay attention in a meeting.

FAQ

Wait, isn’t this just basic math?
Yeah, technically. But doing it manually gets messy fast. Especially when you’ve got 5 different buys over 3 months. This tool saves time and avoids the “did I divide that right?” anxiety. Think of it like a calculator for your portfolio’s homework.

Can I use this for selling shares too?
Nope. This is strictly for calculating your average buy price. Once you start selling, things get more complicated—FIFO, LIFO, tax lots, blah blah. This tool keeps it simple: buys only. If you need help with sell-side math, you’re better off with a full portfolio tracker or a CPA.