WikiSolutions

Free, client-side utility tools. No sign-up, no data leaves your browser.

World Clock

A fixed UTC clock plus up to 5 customizable locations, updating live.

Estimate your net take-home pay from gross salary, filing status, pay frequency, and location.

Project investment growth over time with regular contributions and custom compounding frequency.

Estimate your monthly mortgage payment, total interest, and full amortization schedule.

Solve percentage of a number, percentage change, and percent increase/decrease instantly.

Convert weight and mass between kilograms, pounds, ounces, stone, and more.

Convert length, area, and volume between metric and imperial units.

Calculate your Body Mass Index, BMI category, and daily calorie needs (BMR/TDEE).

Convert Unix timestamps to human-readable dates across timezones, with a live epoch counter.

Generate cryptographically secure, customizable random passwords in your browser.

Format, validate, and minify JSON with syntax error detection, entirely in your browser.

Encode text to Base64 or decode Base64 back to plain text, with URL-safe support.

Count words, characters, sentences, and paragraphs, with estimated reading time.

Write Markdown and see the rendered HTML update live, side by side.

Convert colors between HEX, RGB, HSL, and CMYK, and check WCAG contrast ratios.

Generate a downloadable QR code from any text or URL, entirely in your browser.