Crypto Tools — Calculators, Converters & Validators
Free cryptocurrency calculators, converters, and utilities. All calculations happen in your browser — no signup, no tracking. 100% free and private — everything runs directly in your browser, nothing is ever uploaded to a server.
All Crypto Tools (10)
Cryptocurrency Calculators & Utilities
Cryptocurrency markets operate 24/7 across thousands of trading pairs, and the math behind common operations — unit conversions, profit calculations, position sizing, yield compounding — is non-trivial enough that doing it by hand is both slow and error-prone. Purpose-built calculators encode the correct formulas so you can explore scenarios instantly, whether you are estimating DCA returns over two years or checking your liquidation price on a leveraged position.
Unit conversion is a frequent source of confusion in crypto. Bitcoin has eight decimal places, and the smallest unit — one satoshi — equals 0.00000001 BTC. Ethereum uses 18 decimal places, with wei as the smallest unit and gwei (one billion wei) as the standard unit for gas fees. Converting between these denominations manually is tedious and mistakes can be costly when constructing transactions or reading on-chain data.
DeFi (decentralized finance) introduces its own set of calculations. Liquidity providers need to understand impermanent loss — the opportunity cost of holding tokens in a pool versus simply holding them. Yield farmers need to convert between APR (simple annual rate) and APY (compounded annual yield) to compare opportunities fairly. Leveraged traders need to know their exact liquidation price before entering a position. Each of these calculations has a precise formula, and getting it wrong can mean real financial loss.
Privacy is especially important for crypto tools. Wallet addresses, portfolio balances, and trading positions are sensitive financial information. Every calculator on this site runs entirely in your browser — no data is ever sent to a server, no addresses are logged, and nothing is retained when you close the tab.
Frequently Asked Questions
Are my wallet addresses or portfolio data stored anywhere?
No. Every crypto tool on this site runs entirely in your browser using JavaScript. Wallet addresses, balances, and calculations are processed locally and never transmitted to any server. Nothing is logged or retained when you close the tab.
How accurate are the profit and DCA calculations?
The formulas are mathematically exact for the inputs you provide. Profit calculations use standard ROI formulas accounting for trading fees. DCA simulations use real historical price data when available. Results reflect the specific scenario you model — actual returns will also be affected by slippage, exchange fees, and tax implications not captured by the calculator.
What is the difference between APR and APY?
APR (Annual Percentage Rate) is the simple interest rate over a year without compounding. APY (Annual Percentage Yield) accounts for the effect of compounding — earning interest on previously earned interest. The more frequently interest compounds (daily vs. monthly vs. yearly), the larger the gap between APR and APY. A 10% APR compounded daily yields an APY of approximately 10.52%.
Does the address validator actually check the blockchain?
No — the validator checks the format, length, checksum, and encoding of the address entirely offline in your browser. It confirms that the address is structurally valid for its chain (Bitcoin, Ethereum, Solana, etc.) but does not query any blockchain node. This means your address is never exposed to any external service.