Free Crypto Tools

net = sell x amount x (1 - fee) - buy x amount x (1 + fee); ROI = net / cost

• •Applies the fee percentage to both the buy and the sell (a round trip).
• •Ignores taxes and funding costs; a disposal may be a taxable event where you live.
• •Break-even is the sell price that exactly covers your entry plus both fees.

IL = 2 * sqrt(r) / (1 + r) - 1, where r = (1 + changeA) / (1 + changeB)

• •Models a standard 50/50 constant-product pool (Uniswap V2 style).
• •Shows loss versus holding only. It does not add the trading fees a real pool earns, which offset some or all of the loss.
• •Concentrated-liquidity pools (Uniswap V3) can amplify this within a chosen range.

units = (account x risk%) / |entry - stop|; reward-to-risk = |target - entry| / |entry - stop|

• •Sizes the position so a stop-out equals your chosen risk amount exactly.
• •Ignores trading fees, funding, and slippage, which slightly increase real losses.
• •A target price is optional; leave it blank to size on risk alone.

fee (ETH) = gasPrice (gwei) x gasUnits / 1,000,000,000; fee (USD) = fee (ETH) x ETH price

• •Gas units are typical values per action; the exact number varies by contract.
• •The Layer 2 figure is an approximate 3% of the L1 cost, shown only for scale. Real L2 fees vary with L1 data costs.
• •Enter the ETH price manually so the tool works offline and stays accurate.

EVM fee = gasPrice (gwei) x gasUnits / 1e9 x native-token price; Solana uses a typical flat fee

• •Uses representative gas prices per chain, not a live feed. Real fees move with demand.
• •L2 figures reflect their typical low gas price; they still depend on Ethereum data costs.
• •Edit the ETH price (the biggest variable) and pick the action to update all chains at once.

final = principal x (1 + APR/365)^(365 x years); simple = principal x (1 + APR x years)

• •Assumes the APR stays constant and rewards compound daily. Real staking yields drift as more of the network stakes.
• •Denominated in the token itself (for example ETH), not dollars, so it excludes price change.
• •Exchange and pool figures are shown after their typical commission; solo staking keeps 100%.

APY = (1 + APR/n)^n - 1, where n is compounding periods per year (e^APR - 1 for continuous)

• •APR is the simple annual rate; APY is the effective rate after compounding.
• •Assumes the rate is constant and every period is reinvested.
• •Protocols often advertise APY (the bigger number) while paying an underlying APR.

purchases = frequency per year x years; total = amount x purchases; units = total / average price

• •You supply an assumed average price. Real DCA buys at many different prices over time, so your actual average will differ.
• •Excludes trading fees and does not predict returns; it plans the schedule.
• •DCA is a way to reduce timing risk, not a guarantee of profit.

1 BTC = 100,000,000 sats; 1 ETH = 1,000,000,000 gwei = 10^18 wei

• •These are exact protocol definitions, not market prices.
• •Satoshis and wei are the smallest indivisible units of Bitcoin and Ethereum.
• •Gwei is the unit gas prices are usually quoted in (1 gwei = 0.000000001 ETH).

next halving height = ceil(height / 210,000) x 210,000; time left = blocks remaining x ~10 minutes

• •Block height is estimated from the April 20, 2024 halving (block 840,000) and the 10-minute target, so it can differ from the live tip by a bit.
• •Real block times vary, so the projected date typically drifts a few days as the event approaches.
• •For the exact current height, check a block explorer such as mempool.space.