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Fee Estimator

Current mempool fee rates and transaction cost calculator. Updated every 30 seconds.

Current Mempool Fees

⚡ Fast (1–2 blocks)

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sat / vByte

~10–20 min

⏱ Medium (3–6 blocks)

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sat / vByte

~30–60 min

🐢 Economy

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sat / vByte

1–6 hours

Fee Calculator

Transaction type:

Custom vBytes:

Fast

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Medium

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Economy

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How Bitcoin Fees Work

Every Bitcoin transaction pays a fee to miners, priced in satoshis per virtual byte (sat/vB) — not as a percentage of the amount sent. The fee depends on the transaction's size in bytes and how congested the mempool (the queue of unconfirmed transactions) is. When demand for block space rises, fees go up; when the mempool clears, they fall.

Fast — top priority, confirms in the next 1–2 blocks (~10–20 min).
Medium — confirms within 3–6 blocks (~30–60 min), good for most payments.
Economy — lowest fee, may take 1–6 hours when the mempool is busy.

Transaction type also matters: a Taproot spend (~58 vB) is far cheaper than a 2-of-3 multisig (~406 vB) at the same fee rate. Use the calculator above to estimate the cost in USD for your exact transaction size before you broadcast.

Want to avoid on-chain fees entirely? Explore the Lightning Network for instant sub-cent payments, check the halving countdown to understand miner economics, or look up any transaction on the address & TX explorer.

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Frequently Asked Questions

What is a good Bitcoin transaction fee right now?

It depends on network demand. This page shows live mempool fee rates (sat/vB) for fast, medium and slow confirmation — pick based on how soon you need it confirmed.

Why are Bitcoin fees sometimes high?

Fees rise when many people transact at once and compete for limited block space. During congestion, a higher sat/vB rate confirms sooner.

How can I lower my Bitcoin fee?

Send during low-demand periods, use native SegWit (bech32) addresses, batch payments together, or use the Lightning Network for small amounts.

What does sat/vB mean?

Satoshis per virtual byte — the unit for Bitcoin fee rates. A higher sat/vB means you pay more per byte of transaction data, which speeds up confirmation.