Dedicated variation for calculate btc fee. Use Bitcoin Fee Calculator with Mempool with the full workflow from the main tool, with no sign-up and no login.
Fetch current sat/vB fees, estimate cost by virtual size, and compare priorities.
Recipient receives
0.00100000 BTC
Miner receives
1128 sats
Total leaving wallet
0.00101128 BTC
Formula used
141 vB x 8 sat/vB = 1128 sats (0.00001128 BTC)
Practical estimate
In Bitcoin, the fee depends on transaction size in vbytes, not the amount sent. A transaction with many inputs costs more even when sending a small amount.
| Priority | sat/vB | sats | BTC |
|---|---|---|---|
| Fastest | 12 | 1692 | 0.00001692 |
| Half hour | 8 | 1128 | 0.00001128 |
| One hour | 5 | 705 | 0.00000705 |
| Economy | 3 | 423 | 0.00000423 |
| Minimum | 1 | 141 | 0.00000141 |
| Custom | 8 | 1128 | 0.00001128 |
Different search intents mapped to the same tool to cover alternative query patterns.
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Bitcoin Fee Calculator with Mempool Data
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Calculadora de Fee Bitcoin com Dados da Mempool
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Bitcoin fees are usually estimated in satoshis per virtual byte. Multiplying sat/vB by transaction vsize gives an estimated total cost in sats.
The tool compares fast, half-hour, hour, economy, minimum, and custom rates for planning.
Refresh queries public recommended fee endpoints for the selected network. If the API fails, the table still shows sample values for manual calculation.
No private key, seed, or signing is involved. This page only calculates costs and displays fee data.
Recommended fees change quickly with demand. The value does not guarantee confirmation in a specific block and should be checked when broadcasting.
It is transaction virtual size in vB, used to calculate fee in sat/vB.
No. It only estimates fees and does not sign or broadcast anything.
Yes. Refresh queries a public fee API when available.
Yes. You can choose mainnet or testnet.
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