Crypto Tools

Model gas fees, trading fees, grid ranges, staking APR, impermanent loss and capital gains before you commit capital. All computed in your browser.

Brazil Crypto Tax Calculator
Crypto profit · BRL 35k exemption · 15% IRPF · loss carry-forward.
Exchange Fee Calculator
Spot + futures taker/maker fees · multiple exchanges · in-browser.
Crypto P&L Calculator
Buy/sell history · average cost · realized + unrealized · in-browser.
Grid Trading Calculator
Grid levels, per-grid profit & total · spot grid · in-browser.
Staking APR Calculator
Simple & compound staking rewards · lockup · in-browser.
Impermanent Loss Calculator
LP position IL · price ratio · in-browser.
Bitcoin Halving Countdown
Next halving · block reward · supply · in-browser.
Ethereum Gas Fee Calculator
Estimate your Ethereum transaction gas fee from gas price (Gwei) and gas limit. See the cost in ETH and USD. Pure in-browser math, no RPC calls.
DeFi Loan Health Calculator
LTV, health factor & liquidation price · DeFi loan safety · in-browser.
Staking vs Holding Calculator
Staking APR vs holding over 1-10 years · price-growth scenario · in-browser.
Crypto Unit Converter
BTC ↔ sats · ETH ↔ gwei ↔ wei · exact in-browser math · no upload.
DCA Calculator
Simulate dollar-cost averaging on eight major coins with real CoinGecko price history, compared to a lump-sum buy.
Position Size Calculator
Size crypto and futures trades from your risk percent: position size, quantity, margin, liquidation.
Vesting Schedule Calculator
Model a token grant with cliff and monthly vesting: unlocked and locked amounts plus the next unlock event date.
Market Cap to Price
Convert between market cap, token price and circulating supply: fill two fields and the missing value appears.
Leverage Calculator
Estimate the isolated-margin liquidation price with fees, position size and the distance to liquidation offline.