Tool first
Each page opens with a working interface before notes, examples, and limitations.
Private, practical, browser-based
Open a focused utility, finish the calculation or conversion, and move on. Most tools run locally in your browser; live data tools clearly show their public source.
Utility index
Search by task, filter by category, or open a related utility from the grouped index below.
15 tools available
Try a broader term such as text, date, password, color, JSON, loan, or rate.
Format, encode, count, and inspect text or structured snippets directly in the browser.
Count characters and words, estimate reading time, and clean simple text formatting.
Validate, format, and minify JSON snippets for API debugging and configuration checks.
Encode or decode URL components for query strings, redirects, and web debugging.
Encode text to Base64 or decode Base64 back to UTF-8 text in your browser.
Generate random passwords or protect short notes with browser-side encryption.
Handle practical everyday math for units, health reference, percentages, and fixed-rate loans.
Convert common distance, weight, and temperature values without leaving the page.
Estimate body mass index from height and weight for general wellness reference.
Calculate percent of a number, percent change, totals, discounts, and markups.
Estimate monthly payments, total interest, and total repayment for fixed-rate loans.
Convert dates, timestamps, colors, and layout dimensions for planning and production work.
Measure the number of days between two dates for schedules and planning.
Convert Unix timestamps to readable UTC, ISO, and local time values.
Pick a color and copy readable HEX, RGB, and HSL values for design work.
Find simplified ratios and proportional dimensions for images, video, and layouts.
Use clear source notes when a tool needs a public data API instead of only browser-side math.
How it works
Each page opens with a working interface before notes, examples, and limitations.
Text, password, conversion, date, color, and calculator tools run in the browser.
When a utility needs public live data, the page explains the API and fallback behavior.