Free crypto calculators you can trust
Converter, DCA, compound interest, mining profit, leverage liquidation, gas tracker and FIFO tax — seven tools, one fast page, prices cross-checked across two independent sources.
Understand costs and risk
Three common questions. Open the matching calculator or checklist.
Average buy cost & break-even
Find your weighted cost and full-exit break-even price after sale fees.
Open calculator →Stop-loss risk & position size
Model position size from a risk budget, stop and fees. Stops are not loss caps.
Open simulator →Withdrawal vs network fees
Check networks, total debit and expected receipt without double-counting fees.
Read the Onchain Wiki guide ↗Seven tools, zero friction
Each calculator runs entirely in your browser. Your numbers never leave your device.
Spot net profit
Calculate profit, return and break-even after buy and sell fees.
Unit Converter
Convert between 12+ cryptocurrencies and 5 fiat currencies with live rates.
DCA Calculator
Backtest dollar-cost averaging against real historical prices.
Compound Calculator
Project long-term growth of principal plus monthly contributions.
Mining Calculator
Estimate BTC mining revenue, power cost and payback period.
Leverage Calculator
Liquidation price and PnL for isolated-margin positions.
Funding Rate Calculator
Estimate perpetual funding paid or received across settlement intervals.
Gas Tracker
Live Ethereum gas prices and transaction cost estimates.
Tax Calculator
FIFO cost basis and realized gains from your trade history.
Popular conversions
Why traders bookmark CryptoTools+
Data you can verify
Prices are aggregated from Binance and CoinGecko, cross-validated, and always shown with source and timestamp. When feeds fail you see cached data clearly labelled — never a silent wrong number.
Private by design
No accounts, no tracking of your inputs. Every calculation runs locally in your browser.
Built for real decisions
Liquidation prices, FIFO tax lots, DCA vs lump-sum backtests — the exact numbers you need before you click buy.
Latest guides
Browse all guides →What Is Dollar-Cost Averaging? A Numbers-First Guide
DCA is the most recommended — and most misunderstood — crypto strategy. Here is exactly how it works, when it beats lump-sum, and when it does not.
How Liquidation Prices Really Work (With the Formula)
Most traders learn their liquidation price the hard way. Here is the isolated-margin formula, worked examples, and why the exchange number differs slightly from yours.
FIFO Crypto Tax Explained: Cost Basis Without the Headache
Every sell is a taxable event in most countries. Here is how FIFO cost basis works, with a worked example you can verify in our calculator.
Is Bitcoin Mining Still Profitable? How to Do the Math
Mining profit comes down to five numbers: hashrate, watts, power price, difficulty and BTC price. Here is the full formula and how to stress-test it.
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