Crypto profit, computed honestly.

Buy price, sell price, quantity, fees, and you get profit, return and break-even, calculated on this page with nothing sent anywhere. Then the part other profit calculators skip, why this number is not your taxable gain.

The working
Enter your figures and the working appears here.

Runs on this page, nothing transmitted. Positive means profit, negative means loss, break-even is the sell price at which fees are exactly covered.

Now the truth other calculators skip.

The profit on one trade is not your UK taxable gain. HMRC matches every disposal against your acquisitions under strict rules, same day, the following 30 days, then your section 104 pool's average cost, so the taxable figure depends on your entire history, not this trade. Sold at a loss and bought back within a month? The loss probably is not what you think. The full app computes the real figure across every wallet and year, on your machine, with the rule named per disposal, and the CGT calculator turns a known gain into the tax.

Compute my real gains

Quick questions.

How is crypto profit calculated
Sale proceeds minus purchase cost minus fees on both sides. This calculator shows profit, percentage return, and your break-even price including fees, computed in your browser with nothing sent anywhere.
Is my profit the same as my taxable gain
Usually not, and the difference costs people money. UK tax matches your disposal against acquisitions under the same-day, 30-day and section 104 pooling rules, so your taxable gain depends on your whole history, not one trade. The full app computes the real figure.
Does this calculator send my numbers anywhere
No. It runs entirely on this page in your browser, nothing you type is transmitted or stored.