Bitcoin Transaction Fee Calculator
Real-time mempool data • Optimal fee estimation • Compare priorities • Save on network fees
Bitcoin fees are paid per byte of transaction data, not per amount sent. This calculator converts the current mempool fee rate in sats per vByte into a dollar cost for your transaction size, and estimates confirmation time for economy, standard and priority settings.
MempoolPool
41.8 MB
Pending TXsPending
83,244
Next BlockNext
1 sat/vB
Network
medium
Transaction ParametersTX Parameters
Live Recommended Fees (sat/vB)Current Fees (sat/vB)
Fast
1
30m
1
1hr
1
Eco
1
Fee Estimate
Compare All Priority Levels
| Priority | Rate | Sats | USD | Time |
|---|---|---|---|---|
|
Fastest ~10 min
|
1 sat/vB | 141 | $0.11 | ~10 min |
|
30 min ~30 min
|
1 sat/vB | 141 | $0.11 | ~30 min |
|
1 hour ~1 hour
|
1 sat/vB | 141 | $0.11 | ~1 hour |
|
Economy ~4+ hours
|
1 sat/vB | 141 | $0.11 | ~4+ hours |
Tip: If your transaction isn't urgent, waiting for lower network congestion can reduce fees by 50% or more.
Projected Next BlocksNext Blocks
See where your transaction would land based on current fee rateYour TX placement by fee rate
+1
Next BlockBlockRange
0-502
sat/vB
+2
Next BlockBlockRange
0-0
sat/vB
+3
Next BlockBlockRange
0-0
sat/vB
+4
Next BlockBlockRange
0-0
sat/vB
+5
Next BlockBlockRange
0-0
sat/vB
+6
Next BlockBlockRange
0-0
sat/vB
24-Hour Fee TrendsFee Trends
Real historical fee rates to help you find the best time to transactFind the best time to transact
- Fastest
- 30 min
- Economy
💡 Insight: Bitcoin fees are often lowest during early morning (UTC) and weekends when trading volume decreases. Fees are lower during off-peak hours (early morning UTC).
Share & export
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What is the Mempool?
The Mempool (Memory Pool) is a "waiting room" for all Bitcoin transactions pending confirmation. When you send a transaction, it first enters this pool. Miners then select transactions to include in their blocks, usually prioritizing those with the highest fee (sats/vB).
Low Congestion
If the mempool is empty, 1-2 sats/vB can get you into the very next block.
High Congestion
When the network is busy, low-fee transactions can wait for days or be evicted.
RBF (Replace-By-Fee)
If your transaction gets stuck, you can speed it up by offering a higher fee.
Bitcoin Transaction Fee Calculator
Get accurate Bitcoin transaction fee estimates in four simple steps.
-
01
Enter Transaction Details
Specify your address type (Legacy, SegWit, Taproot), the number of inputs (UTXOs) and outputs for your transaction.
-
02
Fetch Live Network Data
We pull real-time fee recommendations from mempool.space, giving you accurate data on current network conditions.
-
03
Calculate Optimal Fee
Based on your transaction size and chosen priority, we calculate the exact fee in satoshis and USD value.
-
04
Choose Your Priority
Balance cost vs speed — pay more for faster confirmation or save by choosing economy for non-urgent transactions.
Frequently Asked Questions
Everything you need to know about Bitcoin transaction fees
Read Article
Bitcoin Transaction Fees Explained
How fees work, what determines cost, and practical tips to save on every transaction
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Disclaimer
Fee estimates are based on current network conditions and may change rapidly. This tool provides estimates only and is not financial advice. Always verify fees in your wallet before broadcasting transactions. Data sourced from mempool.space API.