Dollar-cost averaging simulation on a supplied price list: average cost, units, return, breakeven price and a comparison against one lump sum at the first price.

Render Markdown to escaped, safe HTML with heading anchors, links, images and lists, plus the heading outline, link list, word count and reading time

Credit utilization calculator - overall and per-card utilization plus paydown needed for a target percent

Buy and sell amounts that bring a crypto portfolio to target weights, with optional new cash, drift band and fees, plus turnover and the biggest drift.

Token market cap, fully diluted valuation, MC to FDV overhang and the constant-market-cap price effect of an upcoming unlock or yearly inflation.

Find the nearest active NOAA weather stations to a coordinate - GHCN station ID, name, distance, record start and latest data date, ready for history queries

Token vesting from total allocation, cliff, vesting months, TGE unlock and start date: tokens unlocked today, locked remainder, next unlock and the monthly schedule.

Debt payoff calculator - payoff months, total interest and impossible-payment flag from balance, APR and payment

FDA medical device recalls by device or firm - recall status, product, reason, root cause, firm, corrective action, product code and posting dates

Profile CSV text - detected delimiter, per-column type, nulls, unique counts, min, max, mean, median, top values, duplicate rows and ragged rows

Unix chmod calculator - octal to symbolic and back, what owner, group and others can do, umask equivalents and warnings for setuid and world-writable modes

Aave-style lending health factor from collateral, debt and liquidation threshold: status, liquidation price, drop to liquidation, repay or add needed for a target.

Constant product swap output, execution price, price impact, minimum received and the trade size that moves the price 1% or 5%, from pool reserves.

FDA drug recalls by drug or firm - recall number, class I to III, status, product, reason, recalling firm, distribution, quantity and dates

FDA drug label excerpts by brand or generic name - boxed warning, indications, dosage, contraindications, warnings, adverse reactions and interactions

Check a top-level domain against the IANA root zone - exists or not, ccTLD, gTLD or IDN type, RDAP server URLs and the current TLD count

MIME type lookup from mime-db - content type for a file extension, extensions for a type, charset, compressibility and IANA source, or search by term

Analyze a Cache-Control header - browser and CDN freshness, no-store and no-cache handling, stale-while-revalidate and conflicting directive warnings

Impermanent loss for a Uniswap v2 or v3 position: LP value against simply holding, the fee income needed to break even, and whether fees cover the loss.

Liquidity pool fee APR and APY from fee tier, daily volume and TVL, your fees per day and period, and the price moves at which impermanent loss cancels them.