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Free Online IT Tools
for Developers
12 essential micro-tools for sysadmins, developers, and network engineers — all running in your browser, 100% free.
All Tools
Subnet Calculator
Calculate network address, broadcast, usable range, and total hosts from IP + CIDR.
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Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings back to plain text instantly.
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JSON Formatter
Paste minified or messy JSON and get it pretty-printed with syntax highlighting.
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Password Generator
Generate strong random passwords with configurable length and character sets.
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IP Lookup
Find your public IP address, ISP, city, country, and timezone information.
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Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input.
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URL Encoder / Decoder
Encode or decode URL strings, handling special characters and percent-encoding.
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Timestamp Converter
Convert Unix timestamps to human-readable dates and back, with live current time.
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WHOIS Lookup
Query WHOIS/RDAP data for any domain — registrar, creation date, expiry, and more.
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DNS Lookup
Query DNS records (A, MX, CNAME, TXT, NS) for any domain via Google's DNS API.
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Regex Tester
Test regular expressions in real time — highlights all matches as you type.
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Binary Converter
Convert numbers between binary, decimal, hexadecimal, and octal instantly.
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