Electrocalc
Electricity price calculator, taxes included.
electrocalc
Know what a device actually costs to run, in seconds.
Most people can read their electricity bill’s total, but have no idea what any single appliance actually costs to run. electrocalc closes that gap: enter a device’s power draw and your price per kWh, and it breaks the cost down across realistic usage windows — so “is it worth leaving this on?” becomes a two-second answer instead of a guess.
What it does
- Input power (W) and price (€/kWh) to get a cost table spanning half an hour to a full day of use
- Spanish and English support
- Light and dark mode
How it’s built
A React 19 + TypeScript app with Material UI, form handling via React Hook Form and Zod validation, and i18next for translations. It’s statically pre-rendered with vite-react-ssg, with dynamic meta tags and structured data for SEO. Every pull request runs a full verification gate in GitHub Actions (lint, typecheck, tests, audit, build); releases deploy to S3 behind CloudFront via a manual pipeline. It also ships as a Docker image for a one-command local run.
Try it with a few appliances around your house — link above.