Premium Converters

Loading

Premium Converters

Loading

Utility Calculators & Converters

Handy utilities for developers, writers, and everyday use.

20 tools

All Utility Tools

Browse all 20 calculators

Base Converter

DEC · HEX · BIN · OCT

Convert any number between decimal, hex, binary, and octal in one shot.

Open

Password Generator

Strong · Random

K9!xW@2·qP

Strength

Cryptographically secure passwords with length and character-set toggles.

Open

QR Code Generator

PNG · SVG

Generate QR codes for URLs, Wi-Fi, vCards, and text — download as PNG or SVG.

Open

Image Format Converter (PNG / JPEG / WebP)

PNG · JPEG · WebP

PNG

WebP

Convert any image between PNG, JPEG, and WebP — fully in your browser.

Open

Unix Timestamp Converter

Unix epoch seconds to a human-readable date — or the other direction.

Open

Color Converter

Pick a colour, get every common code instantly — HEX, RGB, HSL, CMYK.

Open

Word Counter

Live word, character, sentence, and reading-time count for any text.

Open

Case Converter

UPPER, lower, Title, camelCase, snake_case, kebab — all from one box.

Open

Text Reverser / Palindrome Checker

Reverse any text instantly and detect whether it reads the same backwards.

Open

Barcode Generator

EAN · UPC · Code 128

4 901234 567890

Create print-ready barcodes — Code 128, EAN-13, UPC-A, and more.

Open

Regex Tester

Test JavaScript regex patterns live with capture groups and flag toggles.

Open

JSON ↔ YAML Converter

JSON ↔ YAML

{
  "k": 1,
  "ok": true
}

↔

k: 1
ok: true

Two-way JSON / YAML converter with formatting and validation.

Open

JSON ↔ CSV Converter

JSON ↔ CSV

[
  {"id":1,
   "name":"A"}
]

↔

id,name
1,A

Flatten JSON arrays into CSV — or read CSV back into clean JSON.

Open

Base64 Encode / Decode

Base64 encode or decode text and files — handles Unicode correctly.

Open

URL Encoder / Decoder

URL encode or decode any string — works on full URLs or single params.

Open

Hash Calculator (MD5 / SHA-1 / SHA-256 / SHA-384 / SHA-512)

MD5 · SHA-1 · SHA-256

SHA-256

5d41402abc4b2a76b9719d911017c592

from "hello"

MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes computed in your browser.

Open

UUID Generator (v4)

Cryptographically random UUID v4 generator — one or bulk in a click.

Open

Markdown ↔ HTML Converter

MD ↔ HTML

# Title
**Bold**
- list

↔

<h1>Title</h1>
<b>Bold</b>
<li>list</li>

Convert Markdown to clean HTML — and the other way for blog imports.

Open

IBAN Validator

Bank-Account Check

GB29 NWBK 6016 1331 9268 19

✓ Valid · United Kingdom

Validate any IBAN against country format and ISO 7064 mod-97 checksum.

Open

Lorem Ipsum Generator

Placeholder Text

Lorem ipsum dolor sit amet…

Lorem ipsum paragraphs, sentences, or words for mock-ups and drafts.

Open

About Utility

Everyday utility tools for developers, writers, designers, and curious users — password generator, word counter, case converter, color converter (HEX/RGB/HSL/CMYK), QR code generator, barcode generator, base converter (binary/octal/decimal/hex), Unix timestamp, regex tester, JSON/YAML/CSV converters, base64, URL encoder, hash calculator, UUID generator, markdown converter, image format converter, IBAN validator, and lorem ipsum.

Whether you're hashing a password, generating 100 UUIDs for a database seed, encoding a URL for a query string, validating a customer's IBAN, counting words in an essay, or converting an SVG to PNG — these tools save you a Google search and a sketchy third-party site visit.

Developer-grade

Output formats match what production code expects — UUIDs follow RFC 4122, Base64 follows RFC 4648, hashes are NIST-standard.

Privacy-first

Passwords, secrets, hashes, and source data never leave your browser — all processing is client-side JavaScript.

Bulk + batch ready

Most tools accept multi-line input — paste 1000 lines, get 1000 results. No pagination, no API key required.

Frequently Asked Questions

Are passwords generated here secure?

Yes. We use the browser's Web Crypto API (cryptographically secure RNG) for password generation. The password never leaves your browser, never gets logged, never gets transmitted.

Can I trust the hash calculator?

Yes — it uses the browser's built-in Web Crypto SubtleCrypto API for SHA-1, SHA-256, SHA-384, SHA-512. These are NIST-standard implementations identical to what OpenSSL uses server-side.

Will my pasted JSON / source code be uploaded anywhere?

No. All processing is client-side JavaScript. The data you paste never gets sent to any server, never gets logged, never gets stored.

Why use this instead of a CLI tool?

Convenience — no install, no environment setup, no version conflicts. For one-off conversions or quick verifications, a browser tool is faster than firing up Python, Node, or your favourite CLI suite.

Explore Other Categories

Browse 159 free, browser-based calculators across 9 more categories.

Islamic

9

Zakat, Mahr, Qurbani, Faraiz inheritance, Salah times, Qibla direction, Hijri calendar, and Sehri/Iftar — all in one place.

Browse

Financial

14

Make smarter money decisions with financial calculators.

Browse

Gold & Silver

8

Price, purity, weight, and karat calculators for precious-metal buyers, sellers, and jewellers.

Browse

Health

25

Monitor your wellness metrics with reliable health tools.

Browse

Unit

19

Instantly switch between any unit of measurement.

Browse

Date & Time

9

Plan ahead and track time with precision.

Browse

Math

21

Solve everyday math problems with dedicated calculators.

Browse

Construction

22

Essential tools for property, land, and building work.

Browse

Fun

12

Shareable, lighthearted tools for curiosity and entertainment.

Browse

Need something specific? Search all 159 tools →

Back to home

Premium Converters

Loading

Utility Calculators & Converters

Handy utilities for developers, writers, and everyday use.

20 tools

All Utility Tools

Browse all 20 calculators

Base Converter

DEC · HEX · BIN · OCT

Convert any number between decimal, hex, binary, and octal in one shot.

Open

Password Generator

Strong · Random

K9!xW@2·qP

Strength

Cryptographically secure passwords with length and character-set toggles.

Open

QR Code Generator

PNG · SVG

Generate QR codes for URLs, Wi-Fi, vCards, and text — download as PNG or SVG.

Open

Image Format Converter (PNG / JPEG / WebP)

PNG · JPEG · WebP

PNG

WebP

Convert any image between PNG, JPEG, and WebP — fully in your browser.

Open

Unix Timestamp Converter

Unix epoch seconds to a human-readable date — or the other direction.

Open

Color Converter

Pick a colour, get every common code instantly — HEX, RGB, HSL, CMYK.

Open

Word Counter

Live word, character, sentence, and reading-time count for any text.

Open

Case Converter

UPPER, lower, Title, camelCase, snake_case, kebab — all from one box.

Open

Text Reverser / Palindrome Checker

Reverse any text instantly and detect whether it reads the same backwards.

Open

Barcode Generator

EAN · UPC · Code 128

4 901234 567890

Create print-ready barcodes — Code 128, EAN-13, UPC-A, and more.

Open

Regex Tester

Test JavaScript regex patterns live with capture groups and flag toggles.

Open

JSON ↔ YAML Converter

JSON ↔ YAML

{
  "k": 1,
  "ok": true
}

↔

k: 1
ok: true

Two-way JSON / YAML converter with formatting and validation.

Open

JSON ↔ CSV Converter

JSON ↔ CSV

[
  {"id":1,
   "name":"A"}
]

↔

id,name
1,A

Flatten JSON arrays into CSV — or read CSV back into clean JSON.

Open

Base64 Encode / Decode

Base64 encode or decode text and files — handles Unicode correctly.

Open

URL Encoder / Decoder

URL encode or decode any string — works on full URLs or single params.

Open

Hash Calculator (MD5 / SHA-1 / SHA-256 / SHA-384 / SHA-512)

MD5 · SHA-1 · SHA-256

SHA-256

5d41402abc4b2a76b9719d911017c592

from "hello"

MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes computed in your browser.

Open

UUID Generator (v4)

Cryptographically random UUID v4 generator — one or bulk in a click.

Open

Markdown ↔ HTML Converter

MD ↔ HTML

# Title
**Bold**
- list

↔

<h1>Title</h1>
<b>Bold</b>
<li>list</li>

Convert Markdown to clean HTML — and the other way for blog imports.

Open

IBAN Validator

Bank-Account Check

GB29 NWBK 6016 1331 9268 19

✓ Valid · United Kingdom

Validate any IBAN against country format and ISO 7064 mod-97 checksum.

Open

Lorem Ipsum Generator

Placeholder Text

Lorem ipsum dolor sit amet…

Lorem ipsum paragraphs, sentences, or words for mock-ups and drafts.

Open

About Utility

Everyday utility tools for developers, writers, designers, and curious users — password generator, word counter, case converter, color converter (HEX/RGB/HSL/CMYK), QR code generator, barcode generator, base converter (binary/octal/decimal/hex), Unix timestamp, regex tester, JSON/YAML/CSV converters, base64, URL encoder, hash calculator, UUID generator, markdown converter, image format converter, IBAN validator, and lorem ipsum.

Whether you're hashing a password, generating 100 UUIDs for a database seed, encoding a URL for a query string, validating a customer's IBAN, counting words in an essay, or converting an SVG to PNG — these tools save you a Google search and a sketchy third-party site visit.

Developer-grade

Output formats match what production code expects — UUIDs follow RFC 4122, Base64 follows RFC 4648, hashes are NIST-standard.

Privacy-first

Passwords, secrets, hashes, and source data never leave your browser — all processing is client-side JavaScript.

Bulk + batch ready

Most tools accept multi-line input — paste 1000 lines, get 1000 results. No pagination, no API key required.

Frequently Asked Questions

Are passwords generated here secure?

Yes. We use the browser's Web Crypto API (cryptographically secure RNG) for password generation. The password never leaves your browser, never gets logged, never gets transmitted.

Can I trust the hash calculator?

Yes — it uses the browser's built-in Web Crypto SubtleCrypto API for SHA-1, SHA-256, SHA-384, SHA-512. These are NIST-standard implementations identical to what OpenSSL uses server-side.

Will my pasted JSON / source code be uploaded anywhere?

No. All processing is client-side JavaScript. The data you paste never gets sent to any server, never gets logged, never gets stored.

Why use this instead of a CLI tool?

Convenience — no install, no environment setup, no version conflicts. For one-off conversions or quick verifications, a browser tool is faster than firing up Python, Node, or your favourite CLI suite.