Crypto stats & tools

Convert, count down & calculate — instantly.

Seven free, focused crypto tools in one place: a live converter, the Bitcoin halving countdown, satoshi units, profit, average cost, market-cap targets and the Fear & Greed Index. No sign-up. The calculators even work offline.

Calculators work offline · tap to load live prices & rates
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Bitcoin mempool — live

The blocks waiting to be mined and the chain as it grows — Bitcoin's heartbeat, as cubes. Each block is coloured by its fee rate (green = cheap, red = pricey); tap any block for details. Live from mempool.space.

⛓️ Recent blocksNext up · mempool ⟶
NOW
Loading live mempool…

Connecting… · Live from mempool.space · updates ~30s

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Crypto converter

Convert between BTC, ETH, USD, GBP and dozens more at live rates. Load data, then type any amount — everything is bridged through Bitcoin for accuracy.

Load live data to convert
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Satoshi & Bitcoin unit converter

1 BTC = 100,000,000 satoshis. Type in any box and the rest update live. The fiat value uses the live Bitcoin price once you load data.

Tip: a satoshi is the smallest unit of Bitcoin — there are 100 million in one BTC.
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Bitcoin halving countdown

Every 210,000 blocks (about four years) Bitcoin's block reward halves. This counts down to the next halving using the live block height.

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Days
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Hours
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Minutes
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Seconds
Current block
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Halving block
1,050,000
Reward after
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Est. date
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Load live data for the current block height. Because block times vary, the date is always an estimate.
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Crypto profit & ROI calculator

Enter how much you bought, your buy and sell prices, and an optional trading fee. See profit, return and the break-even sell price.

Invested
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Returned
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Profit / loss
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Return
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Average cost calculator

Already hold some and buying more? See your new average entry price after another purchase — handy for "averaging down".

Total amount
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New avg price
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Total cost
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Avg moved
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Market cap calculator

"What would this coin cost if it reached the market cap of another?" Pick a coin, then a target — either another coin's market cap or a custom figure.

Load live data
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Crypto Fear & Greed Index

A 0–100 gauge of overall market sentiment (0 = extreme fear, 100 = extreme greed). It measures emotion, not value — it is not a buy or sell signal.

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Load live data
How it works

Accurate inputs, honest outputs

Every number here is either maths you can check by hand or live data from a named public source. We never invent figures.

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Named live sources

Conversion and unit prices use the CoinGecko exchange-rate and market APIs, the halving height comes from mempool.space, and sentiment from the Alternative.me Fear & Greed Index. If a source cannot load, the tool says so.

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Transparent maths

The profit, average-cost and market-cap tools are plain arithmetic — invested versus returned, weighted averages, and target cap divided by supply. Check any result yourself; nothing is hidden.

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Works offline

The calculators need no connection at all — only the converter, units, halving and sentiment tools call the network, and only when you ask them to.

Important

Read this before you act on any number

Reference tools — not financial advice

Nothing here is financial, investment or tax advice. These are calculators and reference tools. Crypto is highly volatile, and every output is an estimate based on the figures you enter and public market data that can change by the second.

Real fees and rates vary. Exchanges charge different fees and spreads than the simple percentages used here, and live rates differ between providers. Treat conversions and profit figures as close approximations, not exact quotes.

The halving date is an estimate. It is calculated from the current block height assuming roughly ten-minute blocks. Actual timing drifts with network hash rate, so the countdown will shift over time.

"What if" and sentiment are not predictions. A market-cap target shows a hypothetical price for a given valuation — it is not a forecast that a coin will reach it. The Fear & Greed Index reflects crowd emotion, not value, and is not a signal to buy or sell. Always do your own research.

Questions, answered

Crypto tools FAQ

How does the crypto converter work and where do the rates come from?
It converts between cryptocurrencies and fiat currencies using live exchange rates from the public CoinGecko API. Every amount is bridged through Bitcoin internally, so any supported coin or currency can convert to any other. Rates load on demand and are never invented; if they cannot load, the tool says so.
When is the next Bitcoin halving?
Bitcoin halves the mining reward every 210,000 blocks, roughly every four years. The last halving was in April 2024 at block 840,000, cutting the reward to 3.125 BTC. The next is at block 1,050,000, expected around 2028. Because block times vary, the exact date is an estimate, which this page calculates live from the current block height.
What is a satoshi?
A satoshi is the smallest unit of Bitcoin: one bitcoin equals 100,000,000 satoshis. The unit converter shows any amount across BTC, mBTC, bits, satoshis and your chosen fiat value.
What is the Crypto Fear & Greed Index?
A sentiment gauge from 0 (extreme fear) to 100 (extreme greed) that summarises market mood from volatility, momentum, social media and other signals. It reflects emotion, not value, and is not a buy or sell signal. The data comes from the public Alternative.me index.
Is any of this financial advice?
No. These are calculators and reference tools only. Outputs are estimates based on what you enter and public market data, and crypto is highly volatile. Nothing here is financial, investment or tax advice — always do your own research.