Topic: Bitcoin Calculator - page 2. (Read 1139 times)

It is always good to encourage people on developing different tools, even if it already exist (preev.com), different providers are always good, and it is good for education and exercise purposes.

Good idea, but it would be better to request the convertion rate from the server instead of requesting infos from a provider on user side, just a side note.

I like the simple design 

send request when a user stopped typing. add setTimeout 1 second to onChange event for example.

About 7 years late, huh! Hilarious!!

A price ticker as image could be handy for some. Something like 1USD = BTC

You are right, but let he try.

Great idea, but you are late about 7 years with realisation of this idea. I think that such services already in place. I have this calculator in my Android bitcoin wallets for exmple

Adding more currencies is definitely a good idea. But about real time conversion, i omitted because i wanted to minimize api calls. But ultimately, real time data is the most required feature. I will find a way to minimize api expenses. ok. Thank you so much!

You are absolutely right. My script allowed digits but ignored decimal points. Thank you for pointing that out!

I really did not take notice of the average rate and possibility of fake rate. Thank you for your advice!

So this is only works for 1 Bitcoin or higher right? I've just tested your site and tried to input 0.1 or 2.1 Bitcoin but the result is " Not a valid amount" comparing to my favorite Bitcoin calculator over there you can check even for 1 Satoshi, sometimes people want to calculate a decimal amount since calculating decimal amount is kinda hard, just my suggestion it is better if your site can check decimal or amount that lower than 1 bitcoin.

OK! This is a good start and you can improve it of course.

Firstly, of all research if you can convert/calculate the bitcoin to usd and vise versa in real time without needing to touch the button to convert (like google)

Secondly, I would suggest to add more currencies and this would increase the complexity of the website which increase the productivity (like converting btc<=> eth <=> fiat)

Bitcoinaverage is fine if you want to give a global rate, you can use different rates from different exchanges and let the users choose. It would be interesting to do a cron job to get an update of the price every minute and use it instead of sending a query on user side.
You should know that using bitcoin average means that in the case someone dumps bitcoin on a low volume exchange, you will get a fake rate, you should use the exchanges directly, here is a small list :

2    Bitfinex   BTC/USD    $246,667,000    $4033.70    6.54%    Recently
8    Bitstamp   BTC/USD    $95,266,300    $4029.13    2.53%    Recently
10    GDAX   BTC/USD    $88,622,400    $4047.97    2.35%    Recently
13    Gemini   BTC/USD    $68,539,600    $4054.49    1.82%    Recently
22    Kraken   BTC/USD    $41,966,200    $4065.99    1.11%    Recently
31    itBit   BTC/USD    $19,859,900    $4021.90    0.53%    Recently
34    BTCC   BTC/USD    $17,222,400    $4149.99    0.46%    Recently
52    CoinsBank   BTC/USD    $8,225,240    $3921.11    0.22%    Recently
61    HitBTC   BTC/USD    $6,678,150    $4036.67    0.18%    Recently
65    CEX.IO   BTC/USD    $6,003,540    $4192.98    0.16%    Recently
70    Gatecoin   BTC/USD    $5,597,830    $4100.10    0.15%    Recently
90    BTC-X   BTC/USD    $3,886,170    $4050.54    0.10%    Recently
98    xBTCe   BTC/USD    $3,540,630    $4023.40    0.09%    Recently
103    OkCoin Intl.   BTC/USD    $3,205,990    $4318.52    0.08%    Recently
118    BitBays   BTC/USD    $2,450,310    $4109.53    0.06%    Recently
133    Livecoin   BTC/USD    $2,081,400    $4050.00    0.06%    Recently
173    USD X   BTC/USD    $1,193,340    $3924.12    0.03%    Recently
181    BTC Alpha   BTC/USD    $1,070,170    $4035.00    0.03%    Recently
183    Exmo   BTC/USD    $1,058,320    $4015.00    0.03%    Recently
194    Gatehub   BTC/USD    $934,840    $3968.81    0.02%    Recently
210    DCExchange   BTC/USD    $688,478    $4057.30    0.02%    Recently
230    Bitstamp (Ripple Gateway)   BTC/USD    $591,542    $3852.28    0.02%    Recently
261    QuadrigaCX   BTC/USD    $450,369    $4149.99    0.01%    Recently
297    YoBit   BTC/USD    $276,304    $4080.52    0.01%    Recently
328    Lykke Exchange   BTC/USD    $215,453    $4178.93    0.01%    Recently
335    Bitex.la   BTC/USD    $200,568    $4050.00    0.01%    Recently
344    Fargobase   BTC/USD    $187,327    $4429.57    0.00%    Recently
380    LocalTrade   BTC/USD    $129,236    $4101.00    0.00%    Recently
390    BitMEX   BTC/USD    ** $365,317,000    $4050.60    0.00%    Recently
398    Quoine   BTC/USD    ** $277,953    $4061.68    0.00%    Recently

I got it from coinmarketcap, you can also directly use them to get an average rate.

Regarding the features, maybe you can add different currencies and widgets.

Hi all!

I have just started to build a calculator that converts any amount of BTC to its equivalent price in USD. Also USD to BTC.
Like i said, i am just beginning to code this website, it only supports USD for now.
I need suggestions for which exchange currencies to add, just few important ones.
Also, since i am new to bitcoin, what other data is must necessary to be provided to end users.
I am studied few APIs, if you have any idea, I also need help to choose the best API.

The hyperlink is http://bitcoincalculator.co

I will post updates when available.


Thanks