Crypto Converter
Fast, accurate and free online crypto converter tool running directly in your browser.
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Cryptocurrency converter allows you to quickly convert values between cryptocurrencies and fiat currencies. The tool helps investors and those interested in the crypto market check how much their assets are worth in PLN, USD or EUR at the current exchange rate.
Main cryptocurrencies - overview
Bitcoin (BTC): the first and most popular. Limit: 21 million BTC. Proof of Work. Ethereum (ETH): smart contracts, DeFi, NFTs. Proof of Stake. Tether (USDT): 1:1 stablecoin to USD. BNB: Binance token. Solana (SOL): Fast, low fee. XRP: Ripple, bank transfers. USDC: stablecoin (Circle). Dogecoin (DOGE): memecoin. Ada (ADA): Cardano.
How to convert cryptocurrencies
Exchange rate: 1 BTC = PLN X (variable). Portfolio value: quantity × rate. Convert BTC to PLN: 0.5 BTC × BTC/PLN exchange rate. Satoshi: 1 BTC = 100,000,000 satoshi. Gwei: 1 ETH = 1,000,000,000 gwei. Conversion rates: 1000 satoshi = 0.00001 BTC. Market cap = rate × supply. 24h volume: market liquidity.
Cryptocurrency exchanges in Poland
Zainwestuj.pl, BitBay (Zonda), Binance (Polish interface), Kraken, Coinbase. Regulations: VASP (Virtual Asset Service Provider) – registration obligation. KNF: list of warnings. Taxes: profits from crypto = PIT (19% profit tax). Convert using the NBP exchange rate on the transaction date. Obtaining costs: purchase price + commissions.
Security in crypto
Hot wallet: online, convenient, less secure (MetaMask, Trust Wallet). Cold wallet: hardware, offline (Ledger, Trezor). Seed phrase (12/24 words): NEVER share. 2FA: always on. Phishing: Check the exchange URL. Smart contract audit: before investing in DeFi. Diversification: Don't keep everything on one exchange. Not your keys, not your coins.
Frequently asked questions
How to buy cryptocurrencies in Poland?
1. Register on the exchange (Zonda, Binance). 2. KYC verification (ID card). 3. Deposit PLN (transfer, card). 4. Buy your chosen cryptocurrency. 5. Consider moving to your own wallet. Minimum purchase: from a few zlotys. Commissions: 0.1-1.5% depending on the exchange. Time: stock exchange in minutes, blockchain maybe 10-30 min.
How to settle cryptocurrencies in PIT?
Poland: PIT Act, Art. 17 section 1f. Converting crypto to fiat = income. Revenue - BUY (purchase costs) = income. Tax: 19% (flat rate). Form: PIT-38. BUY document: transaction confirmations from the exchange. Crypto-to-crypto exchange: NOT a taxable event (as of 2019). Crypto donation: may be exempt up to threshold amounts. Consult with an advisor.
What is a stablecoin and how does it work?
Stablecoin: A cryptocurrency pegged to an asset (usually USD). Fiat-backed: USDT, USDC (bank reserves). Crypto-backed: DAI (ETH-backed, over-collateralized). Algorithmic: TerraUSD (UST) – collapsed 2022, loss of USD 40 billion. Applications: trading on the stock exchange without going to fiat, DeFi lending, money transfers. Risk: depegging (USDC temporarily $0.87 during Silicon Valley Bank).
What is DeFi?
DeFi (Decentralized Finance): financial services without intermediaries. Smart contracts on Ethereum. Lending: Aave, Compound (borrow crypto, earn interest). DEX (exchange): Uniswap, Curve (trading without a central exchange). Yield farming: make money on liquidity. Risk: smart contract bugs (Poly Network hack USD 600 million), liquidation, impermanen