FDIC insured bank lookup by name - total assets, deposits, branches, charter class, regulator, city and state for US banks

Area converter - convert between acres, hectares, square meters, square feet and square kilometers with all equivalents

Tile quantity estimator from area, tile size and waste allowance

French company register lookup - search Sirene by name or SIREN for legal form, activity code, status, address, headcount band and revenue

Author profile - birth and death dates, top work, work count, subjects, bio and alternate names from Open Library

Concrete volume estimate for a rectangular pour with waste allowance - cubic meters and liters

Airport TAF forecast - decoded terminal forecast periods with wind, visibility, ceiling, flight category and the worst expected category for an ICAO airport

Airport METAR weather - decoded current conditions, flight category (VFR/IFR), wind, visibility, ceiling, altimeter and raw report for up to 5 ICAO airports

CSV to JSON converter - parses quoted CSV with a chosen delimiter and header row into an array of objects

Paris Velib bike availability - real-time bikes, e-bikes and free docks for any station by name or street

JSON to CSV converter - turns an array of objects or arrays into CSV with proper quoting

Volume converter - convert between liters, gallons, quarts, cups, tablespoons and milliliters with all equivalents

Speed converter - convert between mph, km/h, m/s, knots and ft/s with all equivalents

Temperature converter - convert between Celsius, Fahrenheit and Kelvin with all three equivalents

Crypto price on a past date - USD price of up to 5 coins on any day since 2013 with change and multiple versus today

Weight converter - convert between pounds, kilograms, ounces, grams, stone and tons with all equivalents

Crypto price across exchanges - bid, ask, last and 24h USD volume on Kraken, Coinbase, Gemini, Bitstamp, Bitfinex, Gate.io, KuCoin and MEXC, USDT books converted to USD, with best bid/ask, cross-exchange gap and premium vs median

Perp funding rate - current funding for a coin on OKX, Bitget, Gate.io, Hyperliquid, dYdX and Deribit, normalised to 8h and annualized with the long/short bias

DEX volume - top decentralized exchanges by 24h trading volume on any chain with 7d, 30d totals and change percent

Crypto options open interest and max pain - Deribit BTC, ETH, SOL or XRP put/call ratio, top strikes with USD open interest and distance from spot, ATM implied volatility and max pain by expiry