Hard things, made easy.
Free, fast, no-nonsense online tools and calculators. Format JSON, encode Base64, hash text, and run mortgage, percentage, and tip calculations โ all in your browser, nothing uploaded.
Developer
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JSON Formatter
Pretty-print, validate, and minify JSON.
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Base64 Encode / Decode
Convert text to and from Base64.
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URL Encoder / Decoder
Percent-encode and decode URL components.
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Hash Generator
SHA-256, SHA-1, SHA-384, SHA-512.
Calculators
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Mortgage Calculator
Monthly payment, total interest, total paid.
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Percentage Calculator
Percent of, what percent, and change.
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Tip Calculator
Tip, total, and split per person.