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Popular tools
Useful calculators and tools, free, fast, and ready in seconds.
AI Token Calculator
Estimate token counts for prompts, responses, and AI workflows before sending them to an API.
API Cost Calculator
Estimate API usage costs from requests, tokens, pricing, and monthly volume.
EMI Calculator
Calculate monthly EMI, total interest, and total repayment for a loan in seconds.
Latest articles
Simple explanations, formulas, and practical guides to help you understand the numbers behind every calculation.
Simple Interest vs Compound Interest: Key Differences
Simple interest grows in a straight line; compound interest curves upward. Learn the formulas, when each is used, and how the gap widens with time.
What Is Base64 Encoding?
Base64 turns binary data into ASCII text using 64 printable characters. Learn how it works, why it's used, why it adds 33%, and why it is not encryption.
Why Cups, Grams, and Ounces Are Not Always Equal
A cup of flour and a cup of honey weigh very different amounts. Learn why cup-to-gram conversions are ingredient-specific, and when to reach for a scale.
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