Plan the trade before the order
Model net profit, break-even, exchange costs, and position risk from manual assumptions.
Privacy-first Web3 utilitiesKnow the cost
Know the cost
before the click.
Use 31 transparent calculators for crypto trading, DeFi, tokenomics, Bitcoin and stablecoin payments, plus Ethereum developer data. Every tool runs in your browser without a wallet connection.
No wallet connectionNo accountInputs stay on-device
Stablecoin transferManual estimate
Send amount$1,000.00USDC · Base
Estimated receiver amount$998.96with $1.04 total fee
Network estimate$0.04
Withdrawal assumption$1.00
Provider fee$0.00
Illustrative inputsMethodology v1.0.0
Most used
View all 31 toolsStart with the number you need
Trading results
Crypto Profit, Loss & Break-Even Calculator
Calculate net crypto profit or loss, ROI, total fees, take-home proceeds, and the fee-adjusted break-even price.
Yield planningStaking APR, APY & Net Yield Calculator
Project staking rewards with APR or APY, compounding, validator commission, recurring contributions, and restaking costs.
Bitcoin feesBitcoin Transaction Fee Calculator
Estimate Bitcoin transaction virtual size and cost from address type, input and output counts, and a manual sat/vB fee rate.
Contract callsEthereum ABI Function Encoder
Encode a function call and JSON arguments into EVM calldata locally with a trusted ABI.
Network fee overview
Live data offReference inputs, never disguised as live
Phase 1 stays free and resilient: nothing is fetched until a future live-data action is explicitly requested.
EthereumReference input
3 GweiBaseReference input
0.008 GweiArbitrumReference input
0.02 GweiPolygonReference input
35 GweiReviewed July 22, 2026Compare transaction types
Stress-test return and collateral
Project staking yield, lending health, and liquidity-pool outcomes without a wallet connection.
See supply and valuation together
Explore market cap, FDV, vesting, and dilution without presenting a scenario as a prediction.
Compare every visible cost layer
Estimate Bitcoin, stablecoin, gateway, card, and cross-border payment costs with editable inputs.
Inspect EVM data locally
Encode ABI calls, decode errors and logs, generate selectors, validate addresses, and hash typed data.
Built for verification
Every result keeps its assumptions attached.
01
Local by default
Core calculations stay on your device.
02
Precise arithmetic
Decimal and integer math avoids silent rounding.
03
Source labels
Manual, reference, cached, and live data are distinct.
04
Honest limits
Estimates explain what they cannot know.
Practical guides
Browse all guidesUnderstand the number behind the result
016 min read
How to estimate stablecoin transfer fees
Separate network, withdrawal, and service costs before sending USDC or USDT.
Read guide027 min readEthereum gas fees explained without guesswork
Understand gas units, Gwei, base fees, priority fees, and why wallet estimates move.
Read guide036 min readCrypto payment gateway fees explained
Compare provider pricing without overlooking network, conversion, and settlement costs.
Read guideCommon questions
Transparent from the first input
CoinCalcs is designed to remain useful when live providers are unavailable or feature flags are off.
Do I need to connect a wallet?
No. Every Phase 1 calculator accepts manual inputs and never asks for a seed phrase, private key, or signature.
Are results live or guaranteed?
No result is guaranteed. Manual and reference results are labeled explicitly; future live results will include source, timestamp, freshness, and methodology version.
Is calculation history stored?
Not on a server. Firebase and authentication are disabled. Only local preferences such as theme or consent are stored on this device.
Does CoinCalcs give investment advice?
No. The tools are informational and educational. They do not recommend assets, routes, trades, or position directions.