Utility

General-purpose generators, analyzers, and calculators.

Age Calculator

Calculate age from a birth date and optional comparison date.

Calculate simplified aspect ratios and matching proportional dimensions.

Calculate body mass index from height and weight.

Convert colors between HEX, RGB, and HSL.

Calculate the difference between two dates in days, weeks, and calendar terms.

Compute MD5, SHA-1, and SHA-256 hashes of text or a file.

Estimate monthly payments and total repayment for a loan.

Calculate percentages, increases, and decreases.

Generate a QR code image from text, a URL, or other payload.

Generate a password with configurable complexity.

Count words, characters, sentences, and common words.

Convert Unix timestamps to human-readable dates and back.

Decode a percent-encoded URL or string.

Percent-encode a URL or string.

Convert values across common length, weight, temperature, and area units.