Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
New average entry
$56,750.00
Total position size
0.8000
Unrealized P&L
-$4,600.00
Move needed to break even
11.27%
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How to use this
- 1Enter original quantity.
- 2Enter original entry price ($).
- 3Enter additional quantity.
- 4Enter new buy price ($).
- 5Enter current price ($).
- 6Read your new average entry on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Adding to a losing position changes your break-even. This shows the blended average cost, total position size, and how far price must recover.
Worked example
Using the values the calculator loads with:
Inputs
- Original quantity: 0.5
- Original entry price: 62000 $
- Additional quantity: 0.3
- New buy price: 48000 $
- Current price: 51000 $
Results
- New average entry: $56,750.00
- Total position size: 0.8
- Unrealized P&L: -$4,600.00
- Move needed to break even: 11.27%
What each field means
Inputs
- Original quantity
- The original quantity used in the calculation. Starts at 0.5 so you have a working example on load.
- Original entry price ($)
- The original entry price used in the calculation, measured in $. Starts at 62000 $ so you have a working example on load.
- Additional quantity
- The additional quantity used in the calculation. Starts at 0.3 so you have a working example on load.
- New buy price ($)
- The new buy price used in the calculation, measured in $. Starts at 48000 $ so you have a working example on load.
- Current price ($)
- The current price used in the calculation, measured in $. Starts at 51000 $ so you have a working example on load.
Results
- New average entry
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total position size
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Unrealized P&L
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Move needed to break even
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the crypto average down calculator work?
Adding to a losing position changes your break-even. This shows the blended average cost, total position size, and how far price must recover.
What do I need to enter?
5 values: original quantity, original entry price, additional quantity, new buy price, and current price. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the new average entry result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Crypto Average Down Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/crypto-average-down
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/crypto-average-down" target="_blank" rel="noopener">Crypto Average Down Calculator — RevenueLab</a> (2026).</p>
Source: [Crypto Average Down Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/crypto-average-down) (2026).