SUPPLY CAP 21 Million. Fixed Forever BLOCK TIME ~10 Minutes LAUNCHED January 3, 2009 CURRENT BLOCK 936,000+ UPTIME 17+ Years. No Downtime HALVING CYCLE Every 210,000 Blocks NETWORK Decentralized · Open Source SUPPLY CAP 21 Million. Fixed Forever BLOCK TIME ~10 Minutes LAUNCHED January 3, 2009 CURRENT BLOCK 936,000+ UPTIME 17+ Years. No Downtime HALVING CYCLE Every 210,000 Blocks NETWORK Decentralized · Open Source
▪ Free Bitcoin Tools

Run Your Own Numbers.

Enter your salary, your savings, or your timeline and see what the math says. Thirteen calculators, all free, all running on real data.

New to Bitcoin? Start with the Interactive Intro →

Bitcoin Pulse Live

Your Daily Bitcoin Dashboard. Live.

Live price, network stats, Fear & Greed, whale alerts, derivatives data, and a plain-English market summary. One page, auto-refreshing, updated every few seconds.

▪ No sign-up required Open Live Dashboard →
Press M on the dashboard for full-screen Monitor Mode
Auto-Generated Market Narrative
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Live Bitcoin Price

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ETF Flows

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Bitcoin Health Score

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21VOX composite metric
Bitcoin Investment Simulator

Your Bitcoin. Your Personal Projection.

Pick a profile that matches you, enter what you can set aside each month, choose a price scenario, and read the projection. The math is transparent; you can check every assumption.

What brings you to Bitcoin?
Pick the one that fits. This shapes what we show you.
I'm curious I keep hearing about it I'm worried My savings are losing value I'm considering I might buy some I'm comparing Is this better than index funds? I'm skeptical Convince me it's not a scam Someone sent me this My partner won't stop talking about it
▪ No sign-up required Build Your Projection →
$60K salary · 5% · biweekly · 5 years Example Result
Total Saved
$15,000
130 deposits
Bitcoin Value
$38,400
+156% return
Savings Acct
$15,780
2% APY
You set aside $115 every 2 weeks. That's $15,000 total. Bitcoin turned it into $38,400. A savings account would have given you $15,780. 82% of your purchases are in profit today.
▪ Run your own numbers free Try the Calculator →
Paycheck Calculator

Pay Yourself in Bitcoin. Your Salary, Stacked

Enter your salary, pick a percentage to set aside, and choose a pay frequency. The calculator shows what that slice would have built historically and what it could build going forward.

DCA Calculator

Bitcoin DCA Calculator. Consistency Beats Timing

Pick an amount and a frequency, choose a start date, and backtest against real price history. The results include every crash and every rally in between.

$100 / week · Jan 2020 → Today Backtest Preview
Invested
$32,200
322 purchases
BTC Value
$78,249
+143% return
Gold
$76,283
+137% return
S&P 500
$39,910
+24% return
BTC +143% Gold +137% S&P +24%
You kept buying through the 2022 bear market and the 2026 correction (−41%). Bitcoin and gold both beat the S&P by a wide margin. 74% of your purchases are in profit at today's price.
▪ Run your own numbers free Try the Calculator →
$10,000 · 0.1% APY · 5 years Real Cost Preview
Your Balance
$10,050
after interest
Purchasing Power
$8,559
after inflation
The Hidden Fee
-$1,441
lost to inflation
What your bank shows you What you can actually buy
Your bank paid you $50 in interest. Inflation took $1,491. The net cost: $1,441 in lost purchasing power you'll never see on a statement.
▪ Run your own numbers free Try the Tool →
Inflation Calculator

The Hidden Fee. See What Inflation Is Costing You

Your bank pays you interest, but inflation takes more than it gives. Enter your balance and APY to see the gap between what your statement shows and what your dollars actually buy.

Your Bitcoin Number

Your Bitcoin Number. How Much Is Enough?

Enter your monthly expenses and see three Bitcoin milestones: Foundation (3 months of expenses), Resilience (12 months), and Sovereignty (60 months). Each one gives you a concrete BTC target to aim for.

Monthly Expenses: $3,000
Foundation (3 mo) $9,000
Resilience (12 mo) $36,000
Sovereignty (60 mo) $180,000
▪ Find your number in 30 seconds Find Your Number →
0.15 BTC · $200/mo · $3K expenses Progress Preview
Foundation (3 mo) 100%
Resilience (12 mo) 67%
Sovereignty (60 mo) 13%
You hold 0.15 BTC and stack $200/month. You've hit your Foundation milestone. At this pace, you'll reach Resilience in ~14 months.
▪ Track your progress free Track Your Stack →
Stack Progress Tracker

Stack Tracker. Am I On Track?

Enter your current holdings and monthly stacking rate. The tracker shows your progress toward Foundation, Resilience, and Sovereignty, with an estimated date for each milestone.

Sats Per Dollar

How Many Sats Does $1 Buy Right Now?

See how many satoshis $1 buys right now, and compare that to a month ago, a year ago, and a decade ago. Live data, updated every 60 seconds.

$1 USD buys you
1,142 sats
Updated live every 60 seconds
1 Year Ago
1,603
5 Years Ago
11,364
10 Years Ago
434,783
▪ Live data · Screenshot-ready Check Live Sats →
5-Year Scoreboard
Bitcoin +1,042% WINNER
S&P 500 +89%
Gold +72%
Savings +24.6%
US Dollar -15.8%
▪ Live data · 4 timeframes See the Scoreboard →
Bitcoin vs Everything

The Daily Scoreboard. Bitcoin vs the World.

Bitcoin vs S&P 500 vs Gold vs Savings vs the US Dollar. Pick 1, 3, 5, or 10 years and compare total returns side by side. Live data with auto-generated share cards.

Halving Countdown

The Next Halving. Counting Down Live.

Every 210,000 blocks, the block reward drops by half. This page tracks blocks remaining until the next halving at block 1,050,000, shows an estimated date, and lists every past halving.

LIVE COUNTDOWN
~700
Days
:
12
Hours
:
34
Min
3.125 BTC → 1.5625 BTC
~30% to next halving
▪ Live block data · Auto-updating See the Countdown →
TODAY'S READING
0 100
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Yesterday
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Last Week
▪ Updated daily · 30-day chart Check the Index →
Fear & Greed Index

Market Sentiment. One Number.

The Fear & Greed Index combines volatility, momentum, social media, and search trends into a single daily score from 0 (extreme fear) to 100 (extreme greed). Check where sentiment sits today and view a 30-day chart.

Bitcoin Retirement Calculator

How Much Bitcoin to Retire?

Enter your desired retirement income, timeline, and BTC price assumptions. The calculator shows how much Bitcoin you need under bear, base, and bull scenarios, with an accumulation chart for each.

Bitcoin Needed to Retire
₿1.88
187,500,000 sats
Projected: ₿1.22 Target: ₿1.88
Almost There
▪ Side-by-side dashboard · 3 scenarios Plan Your Retirement →
Bitcoin Unit Converter

BTC. Sats. Dollars.

Type a number in any field and the other two update instantly. BTC, satoshis, and US dollars, with a live price refreshing every 60 seconds.

₿ BTC
1.00000000
sat Satoshis
100,000,000
$ USD
87,432.00
▪ Live prices · Instant conversion Convert Now →