Technology Calculators
Developer and IT tools for networking, encoding, security, and bandwidth calculations. IP subnets, Base64, URL encoding, and password generation.
IP Subnet Calculator
Calculate IP subnets and ranges.
Bandwidth Calculator
Calculate download time and bandwidth.
Base64 Encoder/Decoder
Encode and decode Base64 strings.
URL Encoder/Decoder
Encode and decode URLs.
Password Generator
Generate strong random passwords.
LLM API Cost Calculator
Estimate API cost, compare models, find breakeven volume, and see which clouds host each LLM. Covers 110+ frontier models incl. GPT, Claude, Gemini, DeepSeek, Qwen, GLM, Kimi.
Which Calculator Should I Use?
About Technology Calculators
Technology calculators serve developers, network administrators, and IT professionals with tools for everyday technical tasks. From subnetting IP networks and calculating download times to encoding data and generating secure passwords, these utilities handle the precise conversions and computations that come up in software development, system administration, and cybersecurity work.
Why use these calculators?
- Accurate results based on standard formulas
- Fast and mobile-friendly interface
- Completely free to use with no registration
Best Practices
Always double-check your inputs for accuracy. While our tools are rigorous, for critical financial or health decisions, we recommend consulting with a professional explanation.
Frequently Asked Questions
What subnet mask formats are supported?
Our IP calculator supports both CIDR notation (/24) and dotted decimal (255.255.255.0) formats for IPv4.
Is the password generator secure?
Yes, passwords are generated entirely in your browser using cryptographic randomness. Nothing is sent to any server.
What is Base64 encoding used for?
Base64 converts binary data into text characters, commonly used in email attachments, data URLs, API authentication tokens, and embedding images in HTML/CSS.
What is CIDR notation?
CIDR (Classless Inter-Domain Routing) notation like /24 specifies how many bits of the IP address are the network portion. /24 means the first 24 bits are the network, leaving 8 bits (256 addresses) for hosts.