Finance

Calculate student loan repayment with an optional grace period and subsidized/unsubsidized interest. Unsubsidized loans accrue interest during the grace period that capitalizes into principal; subsidized loans do not. Shows monthly payment, total interest, total repayment, a balance curve, and a yearly breakdown.

Development

Generate theme.extend.colors for tailwind.config.ts from HEX colors, with WCAG contrast levels and optional dark mode.

Development

Parse Tailwind utility classes into equivalent plain CSS for non-Tailwind projects.

Design

Paste Tailwind classes that use arbitrary values (w-[137px], text-[#bada55], grid-cols-[1fr_2fr], [mask-type:luminance]) and inspect the generated CSS, with a live visual preview, data-type hint detection, and an explanation of each translation. Useful for debugging calc(), CSS variables, and one-off values that escape the design token scale.

Astronomy

Compute telescope optics for visual astronomy: magnification, true field of view, focal ratio, exit pupil, limiting magnitude, Dawes/Rayleigh resolution and useful-magnification range. Enter aperture, telescope focal length, an eyepiece focal length and its AFOV (metric mm or imperial inches), pick a target (deep-sky, planetary, lunar or terrestrial), and get a scaled field-of-view overlay plus target-specific advice on exit pupil and framing.

Text Processing

Convert text to real Unicode superscript (ˣ²) or subscript (H₂O), or mixed — no HTML tags. Digit coverage is full; letter coverage follows Unicode.

Astronomy

Compute the sun’s elevation and azimuth (NOAA algorithm) for any latitude, longitude, date and time, plus the length and direction of the shadow cast by an object of a given height, with sunrise/sunset and a full-day shadow curve

Health

Convert swim benchmark times into 25m, 50m, and 100m pacing and generate CSS-style threshold intervals

Health

Estimate BMR, TDEE, ideal weight, and macro splits for weight loss, maintenance, or muscle gain

Math & Numbers

Convert terabytes to tebibytes with decimal vs binary interpretation, alternate-system comparison, and network-speed-aware transfer estimates

Media

Convert SVG vector graphics to PDF documents for printing and sharing

Math & Numbers

Convert terabytes to gigabytes with decimal vs binary interpretation, alternate-system comparison, and transfer estimates