Bitcoin Transaction Fee Estimator
Check real-time Bitcoin network fees before sending a transaction. See how much you'll pay at different priority levels and estimate the exact cost based on your transaction size.
Fee rates update automatically every 30 seconds using live data from the Bitcoin mempool. Choose the right fee tier to balance speed and cost.
Based on native SegWit (P2WPKH) with 1 input and 2 outputs
Frequently Asked Questions
What are Bitcoin transaction fees?
Bitcoin transaction fees are small amounts of BTC paid to miners who include your transaction in a block. Fees are based on transaction size (in virtual bytes), not the amount of Bitcoin you're sending. Higher fees incentivize miners to prioritize your transaction.
Why do Bitcoin fees change so often?
Fees fluctuate based on network demand. When many people want to transact, fees rise because block space is limited (~4MB per block every ~10 minutes). During quiet periods, fees drop significantly. Weekends and off-peak hours often have lower fees.
What are sat/vB and vBytes?
Sat/vB (satoshis per virtual byte) is the fee rate — how much you pay per unit of transaction size. Virtual bytes (vBytes) measure your transaction's size after SegWit's weight discount. A typical simple transaction is about 140 vBytes.
How can I reduce my Bitcoin transaction fees?
Use a SegWit-compatible wallet (most modern wallets support this), batch multiple payments into one transaction, consolidate small UTXOs during low-fee periods, and time your transactions for off-peak hours. You can also use the Lightning Network for instant, near-zero-fee payments.
What happens if I set my fee too low?
If your fee is too low, your transaction may stay unconfirmed in the mempool for hours or even days. Eventually it will either confirm when fees drop, or be dropped from the mempool (typically after 2 weeks). Most wallets let you bump the fee using RBF (Replace-By-Fee) if your transaction is stuck.
Keep Your Bitcoin Safe
Understanding fees is important, but so is knowing where to store your Bitcoin. Learn how to take full control of your keys with our self-custody guide.
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