If you're not sure what each fee is, start with crypto fees explained. The four types and who charges each are covered there.
Use the calculator
Runs entirely in your browser. Enter each platform's current rates to compare the true cost of the same purchase.
How to read the result
- Each fee, itemized. You'll see the trade fee (amount × %), the flat fee, and the network fee separately, so you can see which one is doing the most work.
- Total cost. The amount plus all fees — what actually leaves your account.
- Effective fee. Total fees as a percentage of the amount. This is the number to compare across platforms: two platforms can show the same trade-fee % and differ once the flat and network fees are included.
Frequently asked questions
Where do I get the numbers to enter?
From the platform's official fee page, the day you buy. The trade-fee percentage (or spread) and any flat fee come from the exchange; the network fee is set by the blockchain and varies with congestion. Rates change, so don't rely on a number you saw weeks ago.
What about a spread instead of a stated fee?
If a platform prices via a spread (a slightly worse price rather than an explicit fee), estimate the spread as a percentage and enter it as the trade fee. Compare the price it offers against the live market price to gauge the built-in cost.
Does a smaller purchase mean lower fees?
Not always. Percentage fees scale with the amount, but flat and network fees don't — so on a small purchase, the flat and network fees can dominate and the effective fee can be high. This calculator shows that effect clearly.
Where to go next
Understand the fee types in crypto fees explained, apply this to a first purchase in how to buy Bitcoin, and compare platforms in our exchange shortlist.