I just saw several people asking what CPI is in finance and why the crypto market moves wildly every time the report comes out. Let me explain this simply.

Basically, CPI measures whether things are expensive or cheap in the United States. Milk, gasoline, rent, phones... everything is included in the calculation. When CPI rises, it means skyrocketing inflation; when it falls, it means money is worth more and people can breathe a little easier.

Now, why does this matter in crypto? Because everything is connected. A high CPI means the Federal Reserve says "I’m not going to cut rates, I might even raise them." Money becomes expensive, the dollar strengthens, and suddenly people are afraid to risk in volatile assets like Bitcoin and Ethereum. Result: BTC and ETH plummet.

I remember 2022 when CPI hit 9%. Bitcoin dropped from $69,000 to $16,000. It was a bloodbath. But when CPI drops, the opposite happens. The Federal Reserve says "we can lower rates," money becomes cheap, people feel they can take risks again, and the crypto market takes off.

Look at what happened from 2024 to 2025. As CPI fell from high levels, Bitcoin surged from $30,000 to over $100,000. That’s the fuel for the bull market.

What’s interesting is that Bitcoin is called "digital gold" and theoretically should resist inflation, but in reality, what matters are monetary policy expectations. If rates are high, Bitcoin trembles along with the entire market.

Right now, the market expects an annual CPI of 2.5%, similar to core CPI. Current Bitcoin prices are around $68,130. If the next CPI comes in cooler than expected, below 2.5%, we’ll probably see Bitcoin aiming for $70,000 and the whole market rebound. Ethereum would also rise with the flow.

But if CPI comes in hot, above 2.5%, the dollar surges and Bitcoin could retreat to find support around $65,000. That’s why many are watching these data points closely. It’s not just a number; it’s the pulse of the entire market.