Bitcoin Forum

Other => Beginners & Help => Topic started by: roeylee on May 21, 2014, 05:21:08 AM



Title: Kb of a transaction
Post by: roeylee on May 21, 2014, 05:21:08 AM
How is it calculated? Can I control it?


Title: Re: Kb of a transaction
Post by: MrBig on May 21, 2014, 05:40:37 AM
How is it calculated? Can I control it?

I think it's about 180 bytes per input and 34 bytes per output, plus another 10 bytes. Just add all the inputs and outputs plus 10 and you should have a rough figure. Transactions sizes can vary from 0.2kb to over 1kb.


Title: Re: Kb of a transaction
Post by: dragone on May 21, 2014, 06:08:22 AM
I dont think you can, if are you trying to void from the btc fee if I`m guessing correctly.

Everyone has to pay. Its anything less then .1 = lower priority


Title: Re: Kb of a transaction
Post by: BunsenBurner on May 21, 2014, 09:55:54 AM
How is it calculated? Can I control it?

I think it's about 180 bytes per input and 34 bytes per output, plus another 10 bytes. Just add all the inputs and outputs plus 10 and you should have a rough figure.

Yup. http://bitcoin.stackexchange.com/questions/1195/how-to-calculate-transaction-size-before-sending

You can check the number of inputs and pick the inputs yourself if your wallet has a coin control feature (such as qt 0.9.0+).


Title: Re: Kb of a transaction
Post by: roeylee on May 21, 2014, 09:56:32 AM
Can I send to multiple addresses in one transaction? How?


Title: Re: Kb of a transaction
Post by: BunsenBurner on May 21, 2014, 09:57:59 AM
Can I send to multiple addresses in one transaction? How?

Yup, you can.
Which wallet client are you using? Bitcoin Core (Bitcoin-qt)? Electrum? Armory? Blockchain.info?


Title: Re: Kb of a transaction
Post by: roeylee on May 21, 2014, 11:05:53 AM
Can I send to multiple addresses in one transaction? How?

Yup, you can.
Which wallet client are you using? Bitcoin Core (Bitcoin-qt)? Electrum? Armory? Blockchain.info?

Bitcoin Wallet on my Android


Title: Re: Kb of a transaction
Post by: Harley997 on June 10, 2014, 12:55:20 AM
How is it calculated? Can I control it?

You can control it by spending a smaller number of inputs and by having a smaller number of outputs in your TX.

The ultimate way to have this happen is to not receive irregular amounts to your address (if you can control this). It is generally best to receive round numbers when receiving BTC (for examples multiples of .01).


Title: Re: Kb of a transaction
Post by: DeathAndTaxes on June 10, 2014, 01:01:29 AM
How is it calculated? Can I control it?

I think it's about 180 bytes per input and 34 bytes per output, plus another 10 bytes. Just add all the inputs and outputs plus 10 and you should have a rough figure.

147 bytes for compressed keys.  Always use compressed keys to save space.   Most wallets by default create compressed keys.  If your wallet doesn't then yell at them.


Title: Re: Kb of a transaction
Post by: bryant.coleman on June 10, 2014, 08:09:06 AM
Everyone has to pay. Its anything less then .1 = lower priority

Everything less than BTC0.0001 is low priority. But that said, I am seeing a lot of transactions being done with fees ranging from BTC0.00001 to BTC0.00005. May take a while to confirm, but eventually they will, unlike those unpaid transactions.  ;D


Title: Re: Kb of a transaction
Post by: Coef on June 10, 2014, 08:20:17 AM
Everyone has to pay. Its anything less then .1 = lower priority

Everything less than BTC0.0001 is low priority. But that said, I am seeing a lot of transactions being done with fees ranging from BTC0.00001 to BTC0.00005. May take a while to confirm, but eventually they will, unlike those unpaid transactions.  ;D

IIRC, tx with fee lower than 0.0001 per KB is treated like tx with no fee attached by most of the mining pools, is it true?  ???


Title: Re: Kb of a transaction
Post by: Harley997 on June 14, 2014, 01:17:51 AM
Everyone has to pay. Its anything less then .1 = lower priority

Everything less than BTC0.0001 is low priority. But that said, I am seeing a lot of transactions being done with fees ranging from BTC0.00001 to BTC0.00005. May take a while to confirm, but eventually they will, unlike those unpaid transactions.  ;D

IIRC, tx with fee lower than 0.0001 per KB is treated like tx with no fee attached by most of the mining pools, is it true?  ???

Generally speaking yes, however sending something as a fee does have it's advantages, it would act as a "tip" to the miners.