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Project compound growth, regular savings, or a loan payment from a rate and a term.

Read a cron expression as a sentence and list the next run times.

Convert a number between decimal, binary, hexadecimal, octal, and Base64.

Convert storage sizes and transfer rates, from MB and GB to Mbps and MB/s.

Convert length, mass, volume, temperature, and other common units.

Read a pixel size as a ratio, then scale the other side so the layout stays proportional.

Translate Unix timestamps into human-readable dates, and dates back into epoch time.

Solve percentages, discounts, sales tax, and VAT from any two values.

Calculate a restaurant tip and split the total across any number of people.