Crypto calculators — 30+ free tools

30 Crypto Calculators — What You Can Work Out Here

From sizing up a tax bill to checking a futures liquidation price before you enter, working with crypto throws up arithmetic constantly. These 30 tools are gathered here so you do not have to go searching each time. All of them are free, none of them ask you to sign up, and the figures you type never leave your browser.

The tools fall into six groups: Tax & Filing for country-by-country capital gains rules, Profit Analysis for what you actually earned after fees, Risk Management for sizing a position before you open it, Korea Tools for the gap between domestic and overseas prices, Market Insight for the halving schedule and staking yields, and Trading Tools for exchange fees and gas costs. Every link below opens the calculator directly.

💰 Tax & Filing (15)

• Korea Crypto Capital Gains Tax Calculator — Applies the 2.5m KRW basic deduction and the 22% rate under the virtual-asset capital gains tax due to start in 2027.
• US Crypto Tax Calculator — Splits short-term (10–37%) and long-term (0–20%) capital gains bands by holding period.
• Japan Crypto Tax Calculator — Reflects miscellaneous-income (雑所得) aggregate taxation with progressive rates up to 55%.
• Germany Crypto Tax Calculator — Tax-free after one year of holding; below one year it applies your personal income tax rate.
• UK Crypto Tax Calculator — Deducts the annual exempt amount, then applies the 10% or 20% CGT band.
• India Crypto Tax Calculator — Applies the flat 30% rate regardless of holding period, plus 1% TDS withholding.
• France Crypto Tax Calculator — Uses the 30% PFU flat tax (12.8% income tax + 17.2% social contributions).
• Canada Crypto Tax Calculator — Includes only 50% of the capital gain in income, then applies your marginal rate.
• Australia Crypto Tax Calculator — Automatically applies the 50% CGT discount after 12 months of holding.
• Spain Crypto Tax Calculator — Calculates the progressive 19–27% IRPF bands and explains the Modelo 720 reporting threshold.
• Italy Crypto Tax Calculator — Applies a flat 26% to gains above the exemption threshold.
• Portugal Crypto Tax Calculator — Tax-free after one year; short-term disposals are taxed at 28%.
• Brazil Crypto Tax Calculator — Calculates 15–22.5% month by month for months above the monthly exemption.
• Singapore Crypto Tax Guide — No capital gains tax for individuals; instead it sets out when trading frequency makes gains business income.
• UAE Crypto Tax Guide — Explains the 0% personal income tax conditions for Dubai and Abu Dhabi residents and VARA-registered exchange requirements.

📈 Profit Analysis (5)

• DCA Calculator — Simulates what steady monthly contributions would be worth today, using historical prices.
• HODL Calculator — Looks back at what a purchase on a given date would be worth now, and at what return.
• Profit & Loss Calculator (P&L) — Enter buy price, sell price, quantity and fees to get realised profit and return in one step.
• ROI Calculator — Shows return on capital invested alongside the annualised return for the holding period.
• Average Price Calculator — Instantly shows where your average entry moves after staged buys or averaging down.

⚡ Risk Management (4)

• Futures Liquidation Price Calculator — Liquidation price by leverage multiple, plus the loss down to that level, for long and short.
• Position Size Calculator — Enter the loss you can accept and your stop distance, and it solves backwards for the quantity.
• Break-Even Calculator — Calculates the price that gets you back to flat, maker and taker fees included.
• Margin Calculator — Shows required margin, margin ratio and the cushion remaining before liquidation.

🇰🇷 Korea Tools (2)

• Live Kimchi Premium Calculator — Live spread between Upbit/Bithumb and Binance, and what an arbitrage would actually net.
• BTC to KRW Converter — Converts BTC, USDT and altcoin balances into won and dollars at the live rate.

🔮 Market Insight (2)

• Bitcoin Halving Countdown — Counts down to the next halving in real time and shows how price moved around previous ones.
• Staking APY Calculator — Compares staking yields across major proof-of-stake assets such as ETH, SOL and ADA.

🛠️ Trading Tools (2)

• Ethereum Gas Fee Calculator — Converts the current Gwei price into real dollar and won fees to estimate transaction cost.
• Exchange Fee Comparison — Compares fees at Binance, Upbit, Coinbase, Bybit and other major venues on equal terms.

Before You Use These Calculators

Every result here is an estimate. The tax calculators follow the general structure of each country's rules, but your actual bill depends on your income band, loss carry-forward and cost-basis method. Futures calculators differ from exchange screens by small amounts because maintenance-margin rates and funding treatment vary by venue. If the amount is large, or the number goes straight onto a tax return, check it against your exchange statements and with a professional.

Related Pages

• Live scanner — spot pumps and dumps
• Kimchi premium dashboard
• New listing alerts
• Whale wallet tracking
• Pump alerts
• Token unlock schedule
• On-chain analysis
• Live liquidation map
• Long/short ratio
• All coin prices
• Pricing
• Blog — market analysis and guides