Observed arrival · 2026-09-07

CalculatorFox: calculations with the working shown

calculatorfox.org Observed source

Editorial interest 78/100 Selection signal · not a rating of the site

A library of 1,327 free calculators for money, health, maths, construction, business, and dozens of other subjects.

Landing page captured for the 2026-09-07 issue.

Field notes

The homepage organizes 1,327 calculators into 24 categories, with examples ranging from mortgage payments and ROAS to concrete, electrical wiring, BMI, and gaming calculations. It states that results are computed live, show the arithmetic steps, and cite the figures’ sources. A paid Pro workspace is described separately for saving assumptions, comparing scenarios, exporting reports, and sharing decisions, while the public calculations remain free.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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