UtilHero

Free web utilities,
zero clutter.

Fast, accurate tools that just work — no sign-up, no downloads, on any device.

Unit Converter

Convert across 75+ categories — length, weight, temperature, data, and more.

NetToolkit

Subnet & CIDR, IP conversion, signal power, and transfer time — calculators for network engineers.

Click Counter

A fast tally counter — click or press a key to count, with a custom step and saved total.

Click Test

Clicks-per-second speed test — pick a duration and beat your best CPS.

Password Generator

Strong, random passwords — custom length and characters, made in your browser.

ID Generator

UUID, ULID, CUID2, and NanoID — generate in bulk and copy.

Stopwatch

Precise timing with lap splits — start, stop, and reset by click or key.

Timer

Countdown timer with an alarm — set hours, minutes, seconds and go.

Todo List

A simple task list — add, edit, complete, filter, and clear. Saved in your browser.

Word Counter

Count words, characters, sentences, paragraphs, and reading time as you type.

JSON Formatter

Pretty-print, minify, and validate JSON with clear error messages.

JSON Visualizer

Visualize JSON as an interactive node graph — pan, zoom, and explore nested data.

QR Code Generator

QR codes for text, URLs, Wi-Fi, email, SMS, phone, location, and calendar events.

Percentage Calculator

What is X% of Y, X is what % of Y, and percentage change between numbers.

Age Calculator

Your exact age in years, months, days — and the difference between two dates.

Base64 Encode / Decode

Convert text to Base64 and back, with full Unicode support.

Case Converter

UPPERCASE, lowercase, Title, Sentence, camelCase, snake_case, kebab-case.

Hash Generator

Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes of any text.

URL Encode / Decode

Percent-encode text for URLs and decode it back.

Unix Timestamp Converter

Current epoch time and conversion between timestamps and dates.

Color Converter

Convert colors between HEX, RGB, and HSL with a preview.

Lorem Ipsum Generator

Generate placeholder text by paragraphs, sentences, or words.

BMI Calculator

Find your Body Mass Index and weight category — metric or imperial.

Tip Calculator

Tip, total, and per-person split for any bill.

JWT Decoder

Decode a JSON Web Token's header and payload and read its claims.

JWT Encoder

Build and sign a JSON Web Token with HS256, HS384, or HS512.

Regex Tester

Test regular expressions with live match highlighting, groups, and flags.

Slugify

Turn any title into a clean, URL-safe slug — accents stripped, hyphenated.

Text Diff

Compare two blocks of text line by line and see what changed.

Remove Duplicate Lines

De-duplicate, trim, clean, and sort lines of text.

Discount Calculator

Sale price, savings, and final total with sales tax.

Loan Calculator

Monthly EMI payment, total interest, and total cost of a loan.

Time Duration Calculator

Elapsed time between two dates and times — days, hours, minutes.

Contrast Checker

Check color contrast against WCAG AA and AAA accessibility standards.

Gradient Generator

Build linear and radial CSS gradients with color stops and copy the CSS.

Palette Generator

Build complementary, analogous, triadic, and monochromatic color palettes.

Tints & Shades

Lighten and darken any color into a full range of tints and shades.

Image to Base64

Encode an image as a Base64 data URI, CSS, HTML, or Markdown.

Image Resizer

Resize, compress, and convert images between PNG, JPEG, and WebP.

Favicon Generator

Turn an image into favicon.ico plus every icon size and the HTML snippet.

Merge & Split PDF

Combine PDFs into one file or split a PDF by page range.

made with ❤️ UtilHero · 2026