Calculator
BTC to sats
Pure unit conversion. Price is irrelevant; the scale is protocol-fixed.
Fixed unit math — 1 BTC = 100,000,000 sats. No price feed required.
Sats
100,000,000
The fixed ratio
Bitcoin’s consensus treats 1 BTC as 100,000,000 base units (sats). Converting BTC → sats is multiply by 1e8 and round to a whole sat for display.
When you need this
Wallets and explorers often show BTC with eight decimals. Faucets and Lightning UX prefer integer sats. Convert before you copy an amount into the wrong field.
Sources & methodology
Factual claims cite primary documentation. Interpretation and calculator assumptions are labeled separately so you can verify the source yourself.
Source: Bitcoin Developer Documentation — One bitcoin equals 100,000,000 base units (satoshis) in standard wallet notation.
GetFreeBit analysis: Fixed unit math only—halvings change issuance, not the sats-per-BTC ratio.
Examples
- Convert 0.01 BTC → 1,000,000 sats.
- Express 1.5 BTC as sats for a Lightning channel budget.
FAQ
- How many sats in 1 BTC?
- 100,000,000. Always.
- Do I need a live price?
- No. BTC ↔ sats is unit math only. Use sats-to-usd or the Bitcoin calculator when you need dollars.
Related tools
- Sats to BTCInteger sats in, BTC with up to eight decimals out.
- Satoshi calculatorStart in sats. See BTC and dollars without rewriting scientific notation.
- BTC to USDDirectional converter: Bitcoin in, dollars out—plus sats as a secondary read.
- Sats to USDMicro amounts in, dollar snapshot out—plus BTC as a secondary line.
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