Observed arrival · 2026-09-07

EAVESENCE: Many Devices, One Calculator

eavesence.com Observed source

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

A free browser calculator that estimates household electricity costs per use, week, month, and year.

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

Field notes

The calculator combines a preset device list with adjustable power, duration, electricity price, and weekly frequency. Its output separates per-use, weekly, monthly, and annual costs, while a second route accepts measured or manufacturer consumption figures for a more precise estimate. The device list includes household staples such as kettles, dishwashers, dryers, televisions, game consoles, laptops, and air conditioners, and the interface supports nine European currency formats.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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