Bitcoin tools and calculators.

Check a market reference, work with Bitcoin units, estimate transaction fees, and explore supply rules. Every tool explains its inputs and limits, and none can place a trade or connect to a wallet.

Pick the Bitcoin tool for your question

Live prices change. Unit math is fixed. Protocol explorers follow Bitcoin rules. Each tool labels which kind of answer it provides.

Live market data

Bitcoin price

Follow a multi-venue BTC/USD reference and open historical ranges, venue comparisons, drawdowns, event markers, and downloadable data.

Open Bitcoin price → 100 asset directory

Cryptocurrency prices

Open Bitcoin and crypto price profiles with clearly labelled USD, USDT, issuer, network, and risk context.

Browse crypto prices → Market overview

Crypto markets

Scan live references, market breadth, venue labels, and historical context across the supported asset directory.

Open crypto markets → Reference conversion

Bitcoin converter

Convert BTC, sats, fiat currencies, and major crypto assets with pair-specific explanations and clearly labelled quote assets.

Open converter → Live network backlog

Mempool explorer

Inspect unconfirmed transaction count, vsize, fee-rate bands and confirmation estimates, then calculate a miner fee.

Explore Bitcoin fees → Exact unit math

Satoshi calculator

Convert BTC to sats or sats to BTC with the fixed rule that one bitcoin always contains exactly 100,000,000 satoshis.

Convert BTC and sats → Live protocol countdown

Bitcoin halving countdown

Watch live block progress, the moving estimated date window, current and next subsidies, and the full issuance curve toward 21 million BTC.

Watch the next halving → Historical model

DCA backtest

Apply equal recurring purchases to historical BTC/USD closes and see how start dates, ending dates, and excluded costs shape the result.

Run the backtest → Proof-of-work data

Mining dashboard

Follow estimated hashrate, mining difficulty, the next retarget and recent public pool share.

Open mining dashboard → Payment channels

Lightning explorer

Chart public Lightning capacity, channels and nodes while keeping private-network coverage limits visible.

Explore Lightning → Historical risk

Volatility and drawdown

Calculate return, annualized realized volatility, current drawdown and maximum drawdown from BTC/USD closes.

Measure Bitcoin risk → Indexed performance

Crypto comparison

Compare up to four assets from a common 100-point start with return, volatility and drawdown metrics.

Compare crypto assets → Dollar-target monitor

Stablecoin pegs

Track USDT/USD and USDC/USD distance from $1 without confusing issuer promises with exchange observations.

Monitor stablecoin pegs → SEC EDGAR filings

Treasury filing tracker

Watch recent primary filings from public companies associated with Bitcoin treasuries without inferring balances from form metadata.

Track SEC filings → Official FRED data

Bitcoin macro overlay

Compare BTC history with rates, yields, CPI and M2 while preserving dates, units and correlation limits.

Open macro overlay → Primary repositories

Software release monitor

Follow Bitcoin Core, LND and Core Lightning tags with direct GitHub links and prerelease labels.

Review software releases → Official EIA context

Mining energy research

Place mining claims beside official power-market data without confusing electricity prices with network consumption.

Study mining energy → Transaction planning

UTXO planner

Model inputs, outputs, change, virtual size and miner fees without connecting or exposing a wallet.

Plan a transaction → Public chain lookup

Transaction decoder

Turn a public TXID into readable inputs, outputs, size, fee rate, locktime and confirmation fields.

Decode a transaction → Historical calculator

Price on a date

Find the nearest available BTC/USD close and compare a past dollar amount with the latest reference.

Look up a date → Blocks, fees and supply

Network dashboard

Read the chain tip, mempool, fee targets, issuance and proof-of-work context in one view.

Open network dashboard → Mining economics

Profitability calculator

Test hashrate, efficiency, electricity, uptime and pool-fee scenarios with explicit omissions.

Model a miner → Block-space market

Historical fee explorer

Compare confirmation targets and retained fee observations while learning why estimates disagree.

Explore fee history → Self-verification

Bitcoin node planner

Plan archival or pruned storage, bandwidth, headroom and verification trade-offs.

Plan a node → Regulated products

Spot Bitcoin ETF tracker

Compare primary fund disclosures, wrapper risks and custody questions without inferring live flows.

Research Bitcoin ETFs → Local checksum check

Bitcoin address checker

Validate Base58, SegWit and Taproot formats without querying a balance or exposing wallet data.

Check an address →

How to read every result

First identify whether the result is observed, calculated, or historical.

Match the tool to the question

A live market number, a fixed unit conversion, and a protocol calculation are different kinds of answers. The Bitcoin price page observes exchange markets, so its value can change and differ by venue. The satoshi calculator uses a fixed denomination rule, so its BTC-to-sats result does not depend on a market. The supply explorer follows Bitcoin’s block-subsidy schedule.

The converter combines a source amount with an indicative reference rate. Its result is useful for comparison, but it is not a quote that anyone must honor. The fee calculator estimates miner fees from transaction size and fee rate; the amount of bitcoin being sent does not set that fee.

Know what the tools leave out

Bitcoin.now is informational. There are no accounts, deposits, withdrawals, wallet connections, orders, personalized recommendations, or executable prices. A calculation cannot know a reader’s taxes, exchange costs, custody plan, risk tolerance, or local rules.

Historical tools need special care. The DCA backtest applies one repeatable rule to past closing prices. It excludes spread, trading fees, tax, failed payments, and human decisions. A favorable past window does not predict the next one. Read the method beside each result before using the number in a decision.

Move from the number to the reason

Tools answer narrow questions. Use the connected learning paths to understand what the output means and what it leaves out.

Learn Bitcoin markets →Learn the Bitcoin network →Learn mining and issuance →Read the data methodology →