Consolidate deliberately
Low-fee periods can reduce a future fee burden, but avoid combining UTXOs whose labels, sources, identities, or intended uses should remain separate.
Tools · Privacy-first
UTXO Consolidation Planner
Compare the total fee cost of consolidating several Bitcoin UTXOs now with keeping them separate and spending them together at a different fee rate later.
The model needs only counts and script types. Addresses and transaction IDs are unnecessary. An optional aggregate value can show how much of the selected bitcoin the current consolidation fee would consume.
Runs locally
Your UTXO plan stays in this browser.
Local input: UTXO counts and script types, destination types, fee-rate assumptions, and an optional aggregate value in satoshis. Network effect: None when planning. Values are processed in this page, are not sent to BitcoinStats, and are not stored or added to the URL.
UTXO counts + fee rates
Browser comparison
Cost + break-even range
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Consolidation model
Describe the UTXOs and both fee environments
The comparison assumes every selected UTXO is spent into one consolidation output, then later spent once to one final output. It does not model change or script-path spends.
Consolidation has a privacy cost.Spending UTXOs together can create a strong common-input-ownership heuristic and link coins, addresses, labels, sources, or identities that were previously separate. A lower fee does not automatically make consolidation a good idea.
Examples:
Default model: ten P2WPKH UTXOs, 1 sat/vB now, and 20 sat/vB later.
Projected two-stage difference—
Path comparison
Pay once later, or pay once now and once later
The break-even rate is the approximate highest current fee rate at which the two-transaction consolidation path still offsets its extra transaction using the assumed future rate. It is a range because common ECDSA and Taproot signature lengths vary.
Optional value checkIf the modeled output is zero or negative, the plan cannot work. This is not a dust, wallet-policy, or spendability check.
Transaction breakdown
Sizes and fees used in the comparison
| Stage | Inputs → outputs | Virtual size | Fee rate | Fee |
|---|
Purpose and limits
Use cost and privacy as separate decisions
Model, not wallet advice
The planner does not inspect ownership, amounts, confirmations, coinbase maturity, frozen coins, wallet labels, script conditions, or whether a wallet will select these inputs.
Future rates are unknown
The alternative rate is a scenario, not a prediction. Relay policy, signature size, additional outputs, change, RBF or CPFP needs can alter the actual cost.
Size intervals reuse the same serialization model as the Fee & Transaction Size Calculator: common single-key P2PKH, P2SH-P2WPKH, P2WPKH and Taproot key-path spends, including CompactSize boundaries and witness discount. No transaction is created, signed, stored, or broadcast.