Every crypto number you need, calculated in seconds
Profit, mining, staking, position sizing, gas: 100+ calculators that run entirely in your browser.
Free · No signup · Privacy-first
Popular Calculators
Entry, exit, fees, and what you actually made.
Return on investment as a clean percentage.
What a past buy would be worth now.
The regret machine, quantified.
Live-price conversion between coins and fiat.
BTC ↔ sats ↔ USD in one view.
Daily and monthly BTC mining profit.
Profitability for a GPU rig.
What your rig's power draw really costs.
Countdown and reward math for the next halving.
Rewards over time at your APR, compounded or not.
LP vs HODL after a price move.
FIFO/LIFO/HIFO gains estimate.
Scheduled buying, modeled over time.
The price of X with the market cap of Y.
Size from account risk and stop distance.
Where leverage ends the trade for you.
R multiple of a planned trade.
Gwei × gas × price, in dollars.
All Calculator Categories
Profit & Loss
Work out exactly what a trade made or lost you.
- › Crypto Profit Calculator
- › ROI Calculator
- › Reverse ROI Calculator
- › HODL vs Trade Calculator
- › NFT Profit Calculator
Mining
Profitability, electricity, difficulty and halving math for miners.
- › Bitcoin Mining Calculator
- › GPU Mining Calculator
- › ASIC Mining Calculator
- › Mining ROI Calculator
- › Electricity Cost Calculator
DeFi & Yield
Staking, LP math, compounding and everything APY.
- › Staking Rewards Calculator
- › Impermanent Loss Calculator
- › Crypto Compound Interest Calculator
- › APY vs APR Calculator
- › Yield Farming Calculator
Tax & Reporting
Estimate what the taxman sees before your exchange does.
- › Crypto Tax Calculator
- › Airdrop Tax Calculator
- › Crypto Salary Calculator
- › Tax Loss Harvesting Calculator
- › Crypto Inheritance Calculator
Investment
DCA, market caps, long-term projections and portfolio math.
- › DCA Calculator
- › Portfolio Allocation Calculator
- › Rebalancing Calculator
- › Market Cap Calculator
- › Market Cap Comparator
Trading Tools
Position sizing, liquidation, risk ratios and trade planning.
- › Position Size Calculator
- › Liquidation Price Calculator
- › Funding Rate Calculator
- › TP/SL Calculator
- › Margin Calculator
Gas & Fees
What a transaction, swap or ETF really costs.
- › Gas Fee Calculator
- › Exchange Fee Comparator
- › Bridge Comparator
- › DEX Slippage Calculator
- › ETF Fee Calculator
Why CalcMyCoin?
Fast
Static pages, tiny scripts. Tools load and respond before other sites finish their cookie banner.
Privacy-first
Your numbers never leave the browser. We cannot see your portfolio and would not want the liability.
Mobile-ready
Every input works one-handed on a phone, with numeric keyboards where they belong.
Built for everyone
Plain-language explanations and documented formulas, so you can verify instead of trust.
What is CalcMyCoin?
CalcMyCoin is a library of single-purpose crypto calculators. Instead of one bloated dashboard, each question gets its own fast page: what did this trade net me, where does 10× leverage liquidate, does this miner beat its power bill, or what does $50 a week become.
Every page shows its formula, works through a real example, and answers the questions people actually search. The math runs in your browser, so the site works the same whether you are checking a $50 position or a $5 million one, and we never know which.
Frequently Asked Questions
Is CalcMyCoin really free?
Yes. Every calculator is free with no signup, no trial and no locked features. The site is supported by ads, never by selling access.
Is my data private?
Everything you type stays in your browser. The math runs locally in JavaScript, and the only optional network call is fetching a public coin price.
How accurate are the results?
Each tool documents its exact formula on the page and in our methodology. Results are as accurate as your inputs, but markets move, so treat outputs as estimates.
Do I need to connect a wallet?
Never. No tool on this site asks for a wallet connection, seed phrase or API key, and none ever will.
Can I suggest a calculator?
Yes, through the contact page. New tools ship regularly and reader requests set the queue.