Why bitcoin value in dollar always changes?

[ad2011]

what are the reasons that effect the bitcoin value?

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[desired_username]

The price is based on supply and demand.

[HarryKPeters]

You should ready this article. It's really helpfull.

https://bitcoinmagazine.com/articles/bitcoin-volatility-analysis-1377627247

For newcomers this sudden rise or decline could be terrifying, however if you read more in to, you will understand the concept, and all the pro's of it better.

Good luck reading up.

[achow101]

what are the reasons that effect the bitcoin value?

Supply and demand, what people are bidding for and asking for on exchanges. Those all are factored into determining the price of Bitcoin in fiat. It is just like how the price of stocks is determined, and the whole thing is highly volatile.

[Harry Hood]

Same answer but more detail - the value of bitcoin in terms of dollars is just a translation, a conversion form one metric to another. The  same exists between bitcoin and every other major currency.

The reason  for the changes is supply and demand - if  there are more buyers than sellers, the price goes up. If there are more sellers than buyers, the price goes down. The challenge is figuring out who's buying/selling and/or what's causing the popular sentiment to buy or sell on any given day.

The same exists in the stock market.

[tyrexs]

i just thinking simple,maybe because dollar is strongest currency and many people using dollar for comparison to other currency

[x13]

Bitcoin is a freely exchangable digital good (currency). Therefore the price is determined by offer and demand. It also is a very speculative good. That causes the price volatility.

[Miracal]

It is all about supply and demand. More buyers = price rise in fiat terms. If there are more sellers = price decrease in fiat terms. These are just the basic factors. There are many more intricate factors that affect the Bitcoin price in international market.

[Raimonn]

Bitcoin in dollars change because its traded like any other divise, all the divises change its value on every transaction on market.

[zPanda]

Supply and Demand.

It's one of the best payment systems out there. And there is a limited number of it.

[futurebit640]

Supply and Demand.

It's one of the best payment systems out there. And there is a limited number of it.

Not only bitcoin and usd but all currency prices will be changing because of trading. This change may be very fraction of price or very big amount like this week bitcoin price went up almost 100$ in day time and came down almost 100$ in night time for me. So it purely because of trading and demand and supply these prices always changes.

[freedomno1]

what are the reasons that effect the bitcoin value?

A variation of metrics such as Bitcoin adoption, usage, seed capital and funding into development and the ease of use.
That is all part of supply and demand but it can be approached from a company like approach to growth on a macro level.

[stingers]

what are the reasons that effect the bitcoin value?

The demand rose in the past few days and that's the reason why the prices rose. Some factors that might have affected the price rise this time were : FBI auctioning the Silk Road coin, halvening thats going to happen the next year and some say that 5,500 BTC were bought by someone is a quick time to pay of the ransom demanded by some kidnappers.

[erickimani]

The coin is young and not used by everybody. Before it stabilizes it will probably take many more years and many more countries have to accept it.

[Rude Boy]

Not only the dollars, but also bitcoin value in all currencies were changing frequently. Because, demand, inflation, buy & sell. These factors are affecting bitcoin price.

[TastyChillySauce00]

where do you live dude , i think everything around the world that have price/value always changing, just like EUR to USD or USD to EUR

[botany]

what are the reasons that effect the bitcoin value?

Unless you have a peg, the exchange rate between 2 currencies will always vary.
Nobody goes around asking why the value of USD in BTC keeps changing, do they? 

[Cs87kxy]

this is a good question, but if you think, a price of an object change every time due the necessity or supply or even a lot or other reason...

[Amph]

it's the sentiment, people jump on the most profitable train, bitcoin seems this one again this time

now the trend is shifting again toward the pump and bull market, jumping now in make more people follow the first and so on

you get a long chain of an unstoppable good sentiment toward the market

[Arcteryx]

It is relevant due to a commodities value. Our dollar changes here when gasoline goes up so it is dependant of the cost of a barrel of oil. If that goes up so does our dollar.
Same with any other currency but with a different factor involved.
Now this currency seems to be reliant on the exchanges and sell/buy scenarios. This is never so easy to predict. Because people's actions are always unpredictable.