Health Canada Drug Product Database by brand or DIN - DIN, product class, company, active ingredients with strengths and last update date
Sun azimuth and elevation for any place and time, plus sunrise, solar noon, sunset, civil to astronomical twilight, day length and polar day or night
Linear regression on two lists - slope, intercept, r, r-squared, standard errors, p-value, 95% slope interval, equation and a prediction for a new x
Find outliers in a list of numbers with IQR fences or z-scores - quartiles, fences, flagged values with index and side, and the mean without them
Simple, exponential or weighted moving average of a numeric series for any window - full series, latest value, trend direction and price versus average
Pearson and Spearman correlation of two lists with p-values, r-squared, strength label and a flag for monotonic but non-linear relationships
Confidence interval for a mean from mean, sd and n using Student t, or a proportion from successes and n using Wilson, at 50 to 99.9 percent
Survey sample size for a margin of error and confidence level with optional population correction, expected proportion and the z value used
Loan payoff with extra payments - monthly payment, months and interest saved, new payoff length and totals versus the original schedule
Maximum home price and loan from income, debts, down payment and rate using the 28/36 rules, with tax, insurance and HOA in the monthly total
Retirement projection from age, savings and monthly saving - nest egg, value in today's dollars, total contributed, growth and sustainable withdrawal income
Break-even units and revenue from fixed costs, price and variable cost, plus contribution margin, target profit units and margin of safety
Credit card payoff time from balance, APR and a fixed payment - months, total interest, total paid and what share of payments goes to interest
Convert text or identifiers between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Title Case and sentence case
Classic ciphers - Caesar with any shift, ROT13, Atbash and Vigenere with a key, encode or decode, with all 25 Caesar candidates for brute force
Inspect a string by code point - UTF-8 bytes, category, script, normalization changes, and warnings for zero-width, bidi and mixed-script lookalike text
Decode a UUID - version, variant, and the embedded timestamp and node for v1, v6 and v7, plus nil and max detection and URN, braced and bare formats
Explain a 5-field cron expression or @daily style macro in plain English and list its next run times in UTC, with runs per day and day-matching rule
Find overlapping working hours across 2 to 8 time zones for a date - UTC windows with local start and end in each zone and total overlap minutes
Split an IPv4 CIDR block into subnets by new prefix or subnet count - network, broadcast, first and last host and usable hosts for each subnet
Convert an ISO 8601 duration like P1DT2H30M or PT90M to seconds, minutes, hours, days and plain words, or turn seconds into a duration string
Convert decimal latitude and longitude to degrees-minutes-seconds and degrees-decimal-minutes, or parse a DMS coordinate pair back to decimal degrees
Polygon area in km2, hectares, acres and square miles from lat,lon vertices, plus perimeter, centroid, bounding box and a point-in-polygon test
Total distance of a multi-stop route from waypoints in km, miles and nautical miles, with each great-circle leg, bearing, detour ratio and travel time
