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Developer Tools Calculators
Subnet, password, hash, Base64, JSON, URL encoding, and web utility calculators.
6 free tools available⭐ Top Picks in Developer Tools
All Developer Tools Calculators
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Base64 Converter
Encode or decode Base64 text....
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Hash Generator
Generate a simple non-cryptographic hash for quick checksums....
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JSON Formatter
Validate and inspect JSON structure....
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Password Generator
Generate a strong random password in the browser....
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Subnet Calculator
Estimate IPv4 subnet address counts from CIDR prefix....
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URL Encoder Decoder
Encode or decode URL query text....
Use FreeAbout Developer Tools Calculators
Developer utilities for everyday encoding, formatting, networking, and security checks.
Quick browser-based tools for common developer workflows.
❓ Developer Tools Calculators — FAQ
No. These tools run in your browser. Avoid pasting secrets into any website unless you understand the risk.