Observed arrival · 2026-11-13
Calculator of Alexandria shows its working
A free collection of calculators across nine subjects, each presented with a step-by-step derivation.
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- People checking calculations across science, health, finance, and engineering
- Worth noticing
- The homepage shows numbered derivations for dilution, compound interest, and kinetic energy, alongside a directory of 84 calculators.
Field notes
The directory is organized by subject and names specific methods, including Beer–Lambert law, Hardy–Weinberg equilibrium, and the Mifflin–St Jeor calorie calculation. On the homepage, three featured examples show numbered equation steps; the dilution explanation also clarifies that adding solvent does not add solute. The extracted page links to individual calculators, but does not show their input fields or results.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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