Free Online Tools
28 fast, free tools that run entirely in your browser — network calculators, DNS & WHOIS lookups, private PDF utilities, generators and converters. No signup, no uploads, no watermarks.
IP Subnet Calculator (IPv4 / CIDR)
Free IPv4 subnet calculator: enter an IP and CIDR prefix to get network address, broadcast, usable host range, subnet mask, wildcard mask and host count.
🌐 NetworkIPv6 Subnet Calculator & Address Expander
Free IPv6 calculator: expand or compress any IPv6 address, calculate the subnet range for a prefix (/64, /56, /48…) and identify the address type.
🌐 NetworkCIDR to IP Range Converter (and Range to CIDR)
Convert CIDR notation to an IP address range and back: enter 10.0.0.0/22 to get first/last addresses, or enter any start–end range to get the minimal CIDR blocks.
🌐 NetworkIP to Binary, Hex & Decimal Converter
Convert any IPv4 address to binary, hexadecimal and decimal (integer) form and back. See each octet's bits — useful for learning subnetting.
🌐 NetworkDNS Lookup — A, AAAA, MX, TXT, NS, CNAME Records
Free online DNS lookup: query A, AAAA, CNAME, MX, TXT, NS, SOA, CAA and SRV records for any domain instantly, with TTLs, using secure DNS-over-HTTPS.
🌐 NetworkReverse DNS Lookup — PTR Record for Any IP
Find the hostname behind any IP address with a free reverse DNS (PTR record) lookup. Works for IPv4 and IPv6, straight from your browser.
🌐 NetworkWHOIS / RDAP Lookup — Domain & IP Owner
Free WHOIS lookup using modern RDAP: see who operates any IP address or domain, the allocated range, registrar, dates and abuse contacts.
🌐 NetworkIP Address Lookup — Location, ISP & ASN of Any IP
Look up any IP address: approximate location on a map, city, country, ISP, ASN and timezone. Free IPv4 and IPv6 geolocation lookup.
🌐 NetworkMAC Address Vendor Lookup
Find the manufacturer behind any MAC address (OUI lookup). Identify unknown devices on your Wi-Fi by their hardware address — free and instant.
🌐 NetworkInternet Latency Test (HTTP Ping & Jitter)
Test your connection's latency and jitter from the browser: repeated HTTP round-trips measure min/avg/max response time — no install, works anywhere.
💻 DeveloperWhat Is My User Agent?
Instantly see your browser's user agent string, plus detected browser, operating system, language and platform details. Free user agent checker.
💻 DeveloperWhat Is My Screen Resolution?
See your screen resolution, browser viewport size, device pixel ratio and colour depth instantly — updates live as you resize the window.
💻 DeveloperJSON Formatter & Validator
Format, beautify, validate and minify JSON online. Clear error messages for invalid JSON. Private — nothing leaves your browser.
💻 DeveloperBase64 Encode / Decode Online
Encode text to Base64 or decode Base64 to text — UTF-8 safe, instant, and private (runs entirely in your browser).
💻 DeveloperSHA Hash Generator (SHA-1, SHA-256, SHA-512)
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text or file — computed locally in your browser with the Web Crypto API.
💻 DeveloperUUID Generator (v4)
Generate cryptographically random version-4 UUIDs, one or in bulk, with one-click copy. Free online GUID generator.
💻 DeveloperUnix Timestamp Converter (Epoch ↔ Date)
Convert Unix timestamps to human-readable dates and back. Live current epoch time, seconds and milliseconds support, local and UTC output.
📄 Files & PDFMerge PDF Files — Free & Private
Combine multiple PDF files into one, free and without uploading anything — merging happens entirely in your browser. No signup, no watermark, no limits.
📄 Files & PDFSplit PDF — Extract Pages Online
Extract chosen pages from a PDF into a new file — free, no upload, no watermark. Enter page ranges like 1-3,7 and download instantly.
📄 Files & PDFRotate PDF Pages Online
Rotate all pages or selected pages of a PDF by 90°, 180° or 270° — free, private, no upload, saved permanently into the file.
📄 Files & PDFJPG to PDF Converter — Images to PDF
Convert JPG and PNG images into a single PDF — free, no upload, no watermark. Choose original size or fit to A4, reorder pages, download instantly.
📄 Files & PDFImage Compressor & Resizer — JPG/PNG
Compress and resize images in your browser: set quality and max width, see before/after size, download instantly. No upload — completely private.
🧰 EverydayStrong Password Generator
Generate strong random passwords with custom length and character sets — created locally with cryptographic randomness, never sent anywhere.
🧰 EverydayQR Code Generator — Free, No Signup
Create QR codes for URLs, text, Wi-Fi and more. Generated instantly in your browser, downloadable as PNG — free with no watermark or signup.
🧰 EverydayWord Counter & Character Count
Count words, characters (with and without spaces), sentences and paragraphs as you type, plus reading and speaking time estimates.
🧰 EverydayPercentage Calculator
Calculate percentages three ways: what is X% of Y, X is what percent of Y, and percentage increase or decrease between two numbers.
🧰 EverydayAge Calculator — Exact Age in Years, Months & Days
Calculate exact age from a date of birth: years, months and days, total days lived, and a countdown to the next birthday.
🧰 EverydayBMI Calculator (Metric & Imperial)
Calculate your Body Mass Index from height and weight in metric or imperial units, with the WHO category and healthy weight range for your height.