Know what each number means.

Exact Ethereum unit conversion

The Wei, Gwei and ETH converter scales a valid decimal input to an integer number of Wei. One ETH is 10¹⁸ Wei and one Gwei is 10⁹ Wei. It formats the other units from that integer, so a valid input is never rounded to make the conversion work. This is a denomination calculation, not a network quote.

Estimates from your inputs

The EVM gas fee calculator multiplies gas units by the gas price you enter. A gas limit is a ceiling; actual gas used may differ. Any USD estimate uses your own native-token price. The page does not fetch live gas or exchange prices.

The crypto futures calculator models a linear USD-margined position from your entry, exit, margin, leverage, fees and funding assumptions. It reports gross and net P&L, ROI and break-even. An isolated-margin liquidation value is a simplified estimate only when you provide a maintenance rate; cross-margin liquidation is unavailable without account-wide information and exchange rules.

The USDT and USDC transfer comparison separates deducted or additional platform fees from native-currency wallet costs. Fee amounts, optional prices, sources and UTC observation times come from you. USD prices are never assumed. It flags quotes at 15 minutes and provides selected issuer contract references with a fixed review date; neither quote age nor an issuer listing verifies a receiver's deposit support.

These calculators use decimal or integer arithmetic for financial values and round only when presenting results. Exchange execution may differ because of price movement, spreads, slippage, changing fees and platform-specific rules.

Sourced Bitcoin history

The Bitcoin DCA calculator requests BTC/USDT daily history from Binance only after you select Load. The request comes from your browser. The backtest uses 00:00 UTC opening prices from completed daily candles for scheduled purchases and the end-date valuation. It shows the date range and fetch time alongside the result.

If a required day is missing, the source is unavailable or the response is stale, the calculation stops with an error. It does not interpolate or invent a price. This calculator limits requests to the past 365 completed UTC days. Values are in USDT, not USD; regional restrictions and rate limits may apply. Daily snapshots are reference data, not executable purchase quotes; historical returns do not predict future results.

Check a result yourself

1. Read the units and the source or input label beside the result.
2. Compare your inputs with the formula and example on the tool page.
3. For the DCA backtest, review each purchase date and price in its table.
4. For an actual transaction or trade, confirm current terms with the network, wallet or exchange before acting.