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BitcoinToolkit

Crypto tools that show their work.

Estimate Bitcoin and Ethereum fees, compare stablecoin transfer costs, and convert units without hiding the arithmetic.

Open Bitcoin Fee Calculator Browse all tools
Bitcoin transaction diagram connecting two UTXO inputs to recipient and change outputs, with Weight, virtual size and sat per vB fee arithmetic

Different networks charge differently. Choose the calculator built around the fee model you are actually using.

Ethereum Gas Calculator

Estimate the Gas an action is expected to use, then compare the likely transaction fee with the maximum EIP-1559 fee cap.

Estimate Ethereum Gas
Ethereum EIP-1559 diagram separating Gas Used, Base Fee, Priority Fee, estimated transaction fee and maximum fee cap

Stablecoin Transfer Fee Calculator

Choose the token, network and transfer amount to see which asset pays the fee and what the sender may spend.

Compare stablecoin fees
Stablecoin routing diagram comparing Ethereum, Polygon PoS and Arbitrum execution paths with their network-native fee assets

More tools for units and UTXOs

View all tools
Bitcoin UTXO Consolidation CalculatorCompare consolidating now with spending the same UTXOs later. Bitcoin Dust & UTXO Spendability CalculatorCheck whether a UTXO is economical to spend at a chosen fee rate. Satoshi ConverterConvert BTC, mBTC, bits and sats exactly. ETH, Gwei and Wei ConverterConvert Ethereum units without floating-point rounding.

Research the network, not just its ticker

Fees and transaction rules depend on the system. Reference pages separate the network, its assets and the source of any market data.

Browse network references
Technical map separating DeFi protocols, execution networks, settlement relationships and network-native fee assets

Read the rule behind the number

Use a guide when the result depends on address format, transaction size or denomination.

How Bitcoin Transaction Fees Work See how virtual size, fee rate and block-space demand determine what a Bitcoin transaction pays.
Bitcoin Address Types ExplainedCompare legacy, nested SegWit, native SegWit and Taproot address formats. What Is a Satoshi?Understand the BTC-to-satoshi relationship and exact Bitcoin denomination conversions.

Methods and sources

Inputs, formulas, rounding rules and known limits stay visible on every calculator. Technical references link to primary documentation when it is available.