Crypto calculators that show you the real numbers
Work out your profit after fees, see what a monthly Bitcoin plan would be worth today, estimate your crypto tax bill, and size every trade before you take it.
Choose a calculator
Crypto Profit Calculator
Profit & loss after buy and sell fees, ROI and break-even price.
Open calculator →↻Crypto DCA Calculator
See what a weekly or monthly plan would be worth today using real price history.
Open calculator →§Crypto Tax Calculator
Estimate capital gains tax on crypto in the US, UK and Canada (2026 rates).
Open calculator →⛏Bitcoin Mining Calculator
Daily, monthly and yearly mining profit from hashrate, power and electricity cost.
Open calculator →⟳Staking APY Calculator
Compound staking rewards with APR or APY, fees and monthly top-ups.
Open calculator →⚖Position Size Calculator
Size trades by risk, see margin, leverage and liquidation price.
Open calculator →Why traders and investors use CryptoMathly
Fees are always included
Exchange fees quietly eat returns. Every calculator accounts for them so the profit you see is the profit you keep.
Real historical prices
The DCA calculator replays your plan against actual weekly or monthly market data instead of an assumed growth rate.
Up-to-date tax rules
US 2026 brackets, the UK 18%/24% CGT rates with the £3,000 allowance, and Canada's 50% inclusion rate.
Private by design
All math runs locally in your browser. We never see or store the amounts you enter.
Latest guides
View all guides →How to Calculate Crypto Profit and Loss (With Fees Included)
Learn the exact formula for crypto profit and loss including buy and sell fees, with worked examples, common mistakes and a free calculator.
Profit & ROIHow to Calculate Your Crypto Break-Even Price
Find the exact price your coin must reach to recover your money after fees. Formula, examples for one and multiple buys, and why break-even is higher than you think.
Profit & ROIHow to Calculate Your Average Buy Price in Crypto
Calculate your average purchase price across multiple crypto buys, including fees. Weighted average formula, worked examples and how it differs from tax cost basis.
Profit & ROICrypto ROI: How to Calculate Return on Investment (and What Counts as Good)
How to calculate crypto ROI, annualized return and return multiples, with examples. Plus how to judge whether a return is actually good once risk and time are included.
Profit & ROICrypto Exchange Fees Explained: Maker, Taker, Spread and Hidden Costs
Understand every crypto trading cost — maker and taker fees, spreads, deposit and withdrawal fees, funding and slippage — and how to calculate their real impact on returns.
Profit & ROIRealized vs Unrealized Gains in Crypto (and Why the Difference Matters)
The difference between realized and unrealized crypto gains, how each is calculated, when tax applies and how to avoid confusing paper profits with real ones.
Frequently asked questions
Are these crypto calculators free?
Yes. Every calculator on CryptoMathly is free to use with no account and no limits.
Where do the live prices come from?
Live prices and historical candles come from Binance's public market-data API. Network hashrate for the mining calculator comes from mempool.space. If live data fails to load you can always type values manually.
Is the crypto tax calculator official tax advice?
No. It gives an educational estimate based on published 2026 rates. Your actual bill depends on your full tax situation, so confirm with a tax professional or the official tax authority.
Do you store the numbers I enter?
No. Calculations happen entirely in your browser and nothing you type is sent to our servers.