Articles
Practical guides on conversions, date math, data sizes, security, and other everyday topics.
Date & Time5 min read
How to Calculate Days Between Dates
Leap years, legal deadlines, Schengen visas, business days — when simple date subtraction is not enough.
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Crypto4 min read
Satoshis Explained: Bitcoin Units
What a satoshi is, how many make a bitcoin, and why tiny denominations matter for everyday crypto transactions.
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Data Size4 min read
MB vs Mbps: Why Downloads Look Slow
Bits vs bytes, ISP speed marketing, and why your 100 Mbps connection only downloads at 12.5 MB/s.
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Security5 min read
Is MD5 Safe? MD5 vs SHA-256
MD5 is broken for security but fine for checksums. When to use MD5, SHA-256, or a password hash like bcrypt.
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