BTC Dust Limit Calculator
Use this BTC dust limit calculator to estimate the minimum practical value for common Bitcoin output types at a given relay fee rate.
Rule of thumb: 3 * (output bytes + spend vbytes) * fee rate
Example Usage
- Estimate the dust threshold for a P2WPKH output at 1 sat/vB.
- Compare how output type changes the minimum practical send value.
- Check whether a planned change output is likely to be considered dust.
BTC Dust Limit Calculator Explained
A BTC dust limit calculator helps you estimate when a Bitcoin output may be too small to be economical to spend later. Dust thresholds depend on output type and relay fee assumptions, because spending a tiny output can cost more than the output itself is worth. By selecting a common output type and a fee rate, the tool gives you a rough threshold in satoshis. This is useful for wallet builders, payment tools, change-output planning, and transaction review. It gives you a practical planning number even though exact policy details may vary by environment.
FAQ
What is dust in Bitcoin?
Dust is an output so small that spending it later may cost more in fees than the output value itself.
Is there one universal dust threshold?
No. It depends on script type, policy assumptions, and fee rate context, so this tool provides an estimate.
Why do different output types have different dust levels?
Because different script types have different sizes and spending costs, which changes the economics of redeeming them later.
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