What is cryptocurrency?

A cryptocurrency is a digital asset that operates on a decentralized public network. Instead of a central bank updating balances, thousands of network participants maintain a shared public ledger. If the network records that you own 0.2 BTC, that is your balance. No bank, no middleman, no permission required.

Supply rules are enforced by code, not policy. Bitcoin has a hard cap of 21 million coins. As of 2025, roughly 19.8 million have already been mined, leaving under 1.3 million to be issued over the next century through a progressively slowing schedule. That scarcity is baked into the protocol and cannot be changed by any single party.

Crypto is not one asset class. Bitcoin focuses on being scarce, censorship-resistant digital money with a predictable issuance schedule. Ethereum is a programmable platform: smart contracts, decentralized finance (DeFi), and NFTs all run on it. Solana is optimized for speed and throughput, enabling thousands of transactions per second at low cost. Each coin has a different purpose, security model, and historical behavior. When you invest in crypto, you are investing in a specific network, not one monolithic category.

Because the market is still young and sentiment-driven, price swings are extreme in both directions. Bitcoin alone has seen six bear markets of 50% or more since 2013. In 2018 it fell 84%, from roughly 20,000 to 3,200. In 2022 it fell 77%, from 69,000 to 16,000. A systematic recurring investing plan navigates this volatility better than trying to time entries and exits.

What is blockchain?

A blockchain is a shared, append-only database. Every few minutes, a new block of transactions is proposed. Once participants reach consensus, the block is permanently sealed onto the chain. This design gives two key properties: transparency (anyone can inspect past transactions) and integrity (rewriting history would require redoing the computational work of every block since that point, which is practically impossible on large networks).

Bitcoin's blockchain was built to do one thing well: allow anyone to send value online without a bank. Blocks are added roughly every 10 minutes. The 21 million supply cap is enforced by the code itself. Halvings cut the block reward in half approximately every four years: 2012, 2016, 2020, and April 2024. After the April 2024 halving, miners earn 3.125 BTC per block, down from 6.25. The next halving is expected around 2028. These supply shocks have historically preceded major price cycles.

Ethereum expanded the blockchain concept beyond value transfer to smart contracts. Instead of only recording that A sent B 0.5 ETH, Ethereum can execute arbitrary logic on-chain, which is how DeFi protocols, NFT marketplaces, and decentralized exchanges exist. A landmark upgrade called The Merge, completed in September 2022, switched Ethereum from energy-intensive proof-of-work to proof-of-stake, reducing its energy consumption by approximately 99%.

For the calculator, each coin's blockchain history determines the earliest available start year. Bitcoin, Litecoin, and XRP have data back to 2014. Most altcoins launched around 2017. Solana data starts in 2020. The calculator adjusts the available start year automatically when you switch coins.

Why backtest a crypto plan?

Crypto's annualized volatility runs roughly 60 to 80%, compared to around 15 to 20% for the S&P 500. In that environment, trying to time the market is unreliable. A backtest replaces guesswork with a mechanical question: how would a specific recurring plan have performed through real market history, month by month?

Dollar-cost averaging (DCA) has a natural advantage in volatile markets. When price is high, a fixed contribution buys fewer units. When price is low, it buys more. For example: 100 per month buys roughly 0.003 BTC when price is 30,000, but roughly 0.031 BTC when price is 3,200. Low-price months accumulate more units automatically, bringing down the average cost over time without requiring any market prediction.

Consider a concrete example: an investor who dollar-cost averaged through the 2018 to 2019 bear market would have accumulated BTC at an average price of roughly 6,000 to 8,000. When BTC hit 69,000 in late 2021, that position had grown 8 to 11 times. The calculator lets you replay this exact period, selecting 2018 as the start year, and see the year-by-year schedule of contributions, balance, and market return.

The assumed return field extends your plan beyond real data. For example, if historical data ends in late 2025 and you want to project to 2030 at a 5 to 10% assumed annual return, the calculator switches to that compounding rate at the right moment. The chart clearly separates the historical segment (based on real prices) from the projected segment (based on your assumption), so you always know which part is history and which is a forward estimate.

How our crypto calculator works

When you enter your inputs and run a backtest, the calculator follows these steps internally.

Choose a coin: Select from BTC, ETH, XRP, BNB, SOL, DOGE, ADA, LINK, TRX, BCH, XLM, or LTC. The available start year adjusts automatically per coin based on when reliable monthly data begins.

Load monthly prices: Price data comes from Yahoo Finance. BTC, LTC, and XRP have data going back to 2014. Most altcoins start around 2017. SOL starts in 2020. The tool uses these monthly closing prices as its historical record.

Define your plan: Enter your initial deposit, recurring contribution amount, contribution frequency (daily to yearly), and the start and end years for your simulation.

Normalize to months: All contribution frequencies are converted to an equivalent monthly cash flow that aligns with the monthly price data. A weekly contribution is multiplied by 52 and divided by 12. A daily contribution is multiplied by 365 and divided by 12.

Replay real market performance: For each historical month, the calculator applies the actual percentage price change of the coin. If BTC rises 10% in a given month, your running balance grows by 10% after your contribution is added. Negative months reduce the balance accordingly.

Extend beyond real data: Once historical data ends, the assumed annual return you entered is converted to a monthly compounding rate and applied to each remaining projected month. The formula is (1 + annualRate)^(1/12) - 1.

Output yearly schedule and chart: The results table shows contributions and balance year by year. The stacked bar chart visually separates starting balance, total contributions added, and market returns, so you can see at a glance what drove growth.

Monthly compounding: Crypto trades 24/7, but monthly intervals keep results readable and consistent with our other calculators.

Currency selector: Selecting USD, EUR, or GBP changes the display format only. Historical FX rates are not applied, so switching currency does not change the underlying performance numbers.

Fees and taxes: Results are gross before fees and taxes. For a more realistic net estimate, reduce your assumed annual return by 1 to 2 percentage points.

Shareable URL: Your coin choice and all inputs are encoded in the query string (for example ?coin=ETH), so you can share or bookmark an exact scenario.

Supported coins

Below you can find the coins we currently support, the earliest year you can start backtesting for each asset, and a short explanation. Newer blockchains simply have a later minimum start year because their historical data is shorter.

Bitcoin is the first and most recognized cryptocurrency, designed as decentralized digital money with a fixed supply of 21 million coins. As of 2025, roughly 19.8 million have already been mined. Transactions are confirmed by a global network of miners using proof-of-work, adding a new block approximately every 10 minutes.

Bitcoin is often compared to digital gold because its scarcity is enforced by protocol. The four halvings in 2012, 2016, 2020, and April 2024 progressively cut the new supply rate, contributing to the price cycles visible in every long-term backtest. After the 2024 halving, miners earn 3.125 BTC per block. The next halving is around 2028.

Because it has the longest reliable data series starting from 2014, Bitcoin is the best coin for testing long DCA windows. A backtest from 2014 to 2025 covers three complete bull-bear cycles, giving you the most realistic picture of what systematic investing through volatility looks like.

Open BTC calculator

Ethereum introduced programmable blockchain technology. Where Bitcoin records value transfers, Ethereum can execute smart contracts: self-enforcing code that runs without a central operator. This made possible DeFi protocols, NFT marketplaces, stablecoins, and decentralized exchanges, all of which depend on ETH to pay transaction fees (called gas).

A landmark upgrade called The Merge, completed in September 2022, replaced energy-intensive proof-of-work mining with proof-of-stake validation. This reduced Ethereum's energy consumption by approximately 99% and changed its issuance dynamics, making ETH's net supply deflationary in high-activity periods.

For investors, Ethereum demonstrates how recurring monthly investing can smooth out large market swings. The 2020 to 2021 DeFi and NFT boom saw ETH rise from roughly 130 to over 4,800, followed by a 77% drawdown in 2022. A DCA plan through this period still produced a strong average cost relative to 2024 prices.

Open ETH calculator

XRP was created to make international money transfers fast, cheap, and reliable. It acts as a bridge asset between different currencies on the RippleNet payment network, allowing banks and payment providers to settle cross-border transactions in seconds rather than days.

Instead of energy-intensive mining, XRP uses a consensus algorithm among trusted validators, allowing transactions to confirm in 3 to 5 seconds with fees of a fraction of a cent. The total supply of 100 billion XRP was pre-minted at launch, with a portion released from escrow over time.

Because XRP's price has historically reacted strongly to regulatory and legal news, it demonstrates in the calculator how DCA can reduce the impact of event-driven volatility. Data goes back to 2014, making it one of the three coins available for the longest historical backtests.

Open XRP calculator

BNB started in 2017 as a utility token for trading fee discounts on the Binance exchange, then evolved into the core asset of the BNB Chain ecosystem. Today it is used to pay transaction fees on BNB Chain, participate in token launches, and engage in governance.

Binance periodically burns BNB tokens using a portion of its profits, reducing the circulating supply over time. This deflationary mechanism ties BNB's long-term supply trajectory to the exchange's revenue and the ecosystem's activity levels.

BNB's value correlates strongly with Binance ecosystem activity and broader crypto market cycles. Because data goes back to 2017, it covers the 2017 to 2018 bull-bear cycle, the 2020 to 2021 bull run, and the 2022 bear market, making it a useful comparison asset for mid-cycle DCA analysis.

Open BNB calculator

Solana is a high-performance Layer 1 blockchain built for speed and low cost. It processes thousands of transactions per second using a combination of proof-of-stake and a unique mechanism called proof-of-history, which timestamps transactions to reduce coordination overhead.

SOL launched in 2020 at around 1 and rose to roughly 260 by November 2021, a 260x gain in under two years. It then fell over 96% to under 10 during the 2022 bear market before recovering to new highs in 2024. Few assets in the calculator show this magnitude of both gain and drawdown in such a short historical window.

Because SOL data starts in 2020, it is the most recent coin in the calculator. This makes it ideal for illustrating how a short but intense real-history segment transitions into a projected segment based on your assumed return, giving you a realistic mixed view for planning.

Open SOL calculator

Dogecoin began in 2013 as a lighthearted parody of crypto speculation but grew into one of the world's most recognized digital currencies by market capitalization. It uses the same proof-of-work algorithm as Litecoin and has no fixed supply cap, issuing roughly 5 billion new DOGE per year.

DOGE offers fast block times of about 1 minute and very low transaction fees, making it practical for small payments and online tipping. Its price movements are heavily influenced by social media sentiment, celebrity endorsements, and retail trading waves rather than fundamental protocol developments.

In the calculator, DOGE illustrates one of the sharpest sentiment-driven moves in crypto history: it rose roughly 12,000% from January to May 2021 on retail enthusiasm, then lost more than 90% of that gain by mid-2022. A DCA plan through this period shows clearly how systematic buying cushions both the euphoria and the collapse.

Open DOGE calculator

Cardano is a proof-of-stake blockchain built with an emphasis on academic peer review, formal verification, and incremental protocol upgrades. Its development follows a staged roadmap covering foundational layers, smart contract capability, scaling, and governance.

ADA is the native token used for transactions, staking, and smart contract execution on the Cardano network. Stakers earn rewards for participating in block production, providing a yield on top of any price appreciation.

Cardano's measured development pace means its price has often lagged faster-moving platforms during bull markets but also showed somewhat lower drawdowns during bear markets. In the calculator, running ADA alongside ETH for the same period highlights how development philosophy translates into different return profiles.

Open ADA calculator

Chainlink is a decentralized oracle network that connects smart contracts with real-world data such as asset prices, weather events, sports results, and API outputs. Without reliable oracles, DeFi protocols that depend on accurate price feeds would be vulnerable to manipulation or failure.

LINK tokens are used to compensate node operators who provide data and to stake as collateral, aligning incentives toward data accuracy. As DeFi usage has grown, Chainlink has expanded to serve as infrastructure for dozens of leading protocols.

In the calculator, LINK demonstrates how infrastructure tokens can have distinct performance cycles. It had an early strong run in 2019 to 2020 driven by DeFi growth, then broadly tracked the broader 2020 to 2021 bull market, and experienced the same 80%+ drawdown in 2022. Comparing LINK's DCA curve against BTC for the same period shows meaningful differences in volatility profile.

Open LINK calculator

TRON is a high-throughput blockchain focused on fast, low-cost transactions and digital content. It was initially designed around decentralized media and entertainment, but has grown into a significant platform for stablecoins, particularly USDT on TRON, which accounts for billions of dollars in daily transfers.

TRX uses a delegated proof-of-stake mechanism where 27 elected super representatives validate transactions. Block times are about 3 seconds and fees are very low, making TRX Chain one of the busiest networks by daily transaction count.

In the calculator, TRX has available data from 2017 and shows a relatively range-bound price history compared to BTC or ETH, with smaller bull-market peaks and shallower drawdowns. This makes it a useful comparison for investors interested in less volatile altcoin exposure.

Open TRX calculator

Bitcoin Cash was created in August 2017 when a portion of the Bitcoin community performed a hard fork to increase the block size limit, aiming to lower transaction fees and support more on-chain throughput for everyday payments.

BCH shares Bitcoin's proof-of-work algorithm and 21 million coin supply cap. Its block size is 32 MB versus Bitcoin's approximate 1 to 4 MB effective size, allowing more transactions per block. The trade-off is higher hardware requirements for running a full node.

In the calculator, BCH offers a direct comparison to BTC from 2017 onward. At the time of the fork, 1 BCH was worth roughly as much as 1 BTC. Comparing the two DCA curves over the same period illustrates how diverging adoption paths affect long-term returns on assets that started from the same base.

Open BCH calculator

Stellar is an open payment network designed for fast, low-cost cross-border transactions between any currencies or assets. Where Ripple targets banks and institutional payment providers, Stellar focuses on inclusion and accessibility, working with NGOs, fintechs, and mobile money platforms to bring digital payments to underserved populations.

XLM uses the Stellar Consensus Protocol, a federated Byzantine agreement system that achieves transaction finality in 2 to 5 seconds with minimal energy use. The network supports the issuance of custom tokens and stablecoins, which are used for real-money corridors in several emerging markets.

In the calculator, XLM has data from 2017 and shows price behavior closely correlated with the broader altcoin market cycle. Its relatively stable, range-bound performance outside of peak bull periods makes it a useful contrast to higher-volatility assets like SOL or DOGE in DCA comparisons.

Open XLM calculator

Litecoin was created in 2011 as a lighter version of Bitcoin, earning the description of silver to Bitcoin's gold. It uses a different hashing algorithm (Scrypt), produces blocks every 2.5 minutes rather than 10, and has a supply cap of 84 million coins versus Bitcoin's 21 million.

Like Bitcoin, Litecoin has halvings that cut the block reward in half. LTC halvings have occurred in 2015, 2019, and 2023, reducing the block reward to 6.25 LTC. Historical data goes back to 2014, making Litecoin one of three coins that supports the longest possible backtesting windows in the calculator.

Litecoin's long track record and close design similarity to Bitcoin make it an ideal comparison asset. Running parallel DCA backtests for BTC and LTC over the same 2014 to 2025 window shows clearly how two assets with similar mechanics but different adoption trajectories can produce very different cumulative returns.

Open LTC calculator

Example calculations

Example 1: BTC, 2017 to 2025, 1,000 start and 10 per day

Open the calculator on Bitcoin (the default) and set Start year to 2017 and End year to 2025.

Enter Starting amount as 1000, Recurring contribution as 10, and Frequency as daily.

The tool replays real BTC monthly data from 2017 onward, including the 84% crash of 2018 and the run to 69,000 in 2021. During bear months, your daily 10 buys more BTC at lower prices, automatically lowering your average cost.

After the last month of real BTC data, the calculator continues with your assumed return, for example 5% annualized, converted to a monthly rate.

Example 2: ETH, 2020 to 2025, 200 per month

Switch the coin to ETH so the URL becomes /crypto-calculator/?coin=ETH.

Set Start year to 2020 and End year to 2025. Enter Starting amount as 0 for a pure DCA plan. Set Recurring contribution to 200 and Frequency to monthly.

The yearly schedule shows how steady monthly buys carried through the 2021 DeFi and NFT boom, when ETH peaked near 4,800, and through the 2022 drawdown to around 900. You will notice contributions make up a large share of the final balance in early years, with market returns becoming more significant over time.

Example 3: SOL, 2021 to 2030, 500 start and 50 per month, 6% assumed after data

Since Solana data starts in 2020, choose the earliest available year. Setting 2021 as the start captures SOL's peak and subsequent 96% drawdown, giving you a realistic stress test.

Set End year to 2030 and Assumed return after last data year to 6.

The result shows a realistic mixed view: real, volatile SOL history for 2021 to 2025, followed by smooth 6% annualized growth from 2025 to 2030. The chart clearly marks where history ends and projection begins, which is essential for honest planning.

Common pitfalls

Cherry-picking bull-market start dates: The same asset with a different start year can show radically different results. A DCA plan starting in January 2016 and ending in December 2020 shows roughly 40 times growth for BTC. The same plan starting in January 2018 shows roughly 2 to 3 times growth over the same number of years. Always test multiple entry periods before drawing conclusions.

Ignoring fees, taxes, and spreads: Each exchange trade typically costs 0.1 to 0.5% in fees. On 12 trades per year over 5 years at 0.25% per trade, that is roughly 15 in direct fees per 1,000 contributed annually, before spreads. Beyond fees, crypto taxation is highly country-specific and varies significantly. Some countries treat every crypto sale or swap as a taxable event subject to income tax. Others apply capital gains tax only on net annual profits. Some have no gains tax for private investors below a threshold. The calculator shows gross results. Reduce your assumed return by 1 to 2 percentage points as a rough offset and verify your local rules with a tax professional before making real decisions.

Comparing coins with different available start periods: SOL's data starts in 2020 and includes its historic run from roughly 1 to 260 in under two years. ETH data from 2020 to 2025 covers a completely different segment of its history. Comparing a SOL backtest from 2020 against an ETH backtest from 2017 mixes up time periods and does not isolate coin-specific performance. Only compare coins using overlapping date ranges.

Setting an unrealistic assumed return: A 50% annual assumed return turns 100 per month into implausible millions over 10 years. That number is not planning: it is wishful thinking encoded as math. Conservative 5 to 10% annual gives a more planning-useful result. For context, BTC's historical annualized return since 2014 has been extraordinary, but it came with 80%+ drawdowns that most investors could not sustain in practice. The assumed return field is for cautious extrapolation, not peak-year performance projection.

Treating backtests as predictions: Backtests show what would have happened if you had invested under those exact historical conditions. They do not predict what will happen next. Regulatory changes, technological shifts, competitive dynamics, and changes in market maturity mean future performance can differ substantially from any historical period. Use the results to understand risk mechanics and plan your contribution schedule, not as a guarantee of future returns. Past performance in crypto specifically includes bull-bear cycles of unusual magnitude that may not repeat in the same pattern.

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