How to use Tx Fee Estimator
Pick gas used for your action type and a gas price assumption. Read estimated network fee before you broadcast elsewhere.
Example: a Bitcoin transaction at 20 sat/vB
A typical one-input, two-output transaction is about 140 vbytes. The network rate is 20 sat/vB and BTC is $65,000.
- Fee = 140 × 20 = 2,800 sats
- In BTC = 2,800 ÷ 100,000,000 = 0.000028 BTC
- In dollars = 0.000028 × $65,000 = $1.82
The fee is about $1.82. Fees depend on transaction size in vbytes, not on how much you send.
Formula & methodology
fee ≈ gasUsed × gasPrice (in chain native units). Convert to USD with gas-cost tools when needed.
Estimate on-chain fees before you send
Transfers, approvals, and mints burn different gas. Estimating ahead of time avoids surprise fees during congestion.
Pair with the gas tracker snapshot and gas cost USD for fiat framing. CryptonicTools does not broadcast transactions.
L2 fee models can differ — confirm on the destination chain wallet estimate.
All CryptonicTools utilities are free, mobile-first, and require no account.