---
title: "Tools — Transformer, power & EV charging calculators | Entogo"
description: "Free planning calculators for North American electrical power infrastructure — size transformers and overcurrent protection, estimate EV charging service…"
url: https://entogo.ca/tools/
lang: en
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  es: https://entogo.ca/es/tools/
  ar: https://entogo.ca/ar/tools/
site: https://entogo.ca/
llms: https://entogo.ca/llms.txt
---

Home › Tools

Planning tools

# Calculators for transformers, power & EV charging

Free, browser-based estimators to scope a project before you engage engineering. Every result is a preliminary planning estimate — confirm with a registered engineer, your utility / LDC and the AHJ / ESA.

- [EV charging ## EV charging service capacity & transformer calculator Estimate EV charging load, service capacity, transformer kVA, switchboard rating and EMS load-management scenarios — NEC (US) and CEC Section 86 (Canada). Open the tool](https://entogo.ca/tools/ev-charging-service-capacity-calculator/)
- [Transformers ## Transformer sizing & overcurrent protection calculator Full-load current, kVA selection, primary/secondary overcurrent protection (NEC 450.3(B) / CEC Section 26), available fault current for downstream AIC / SCCR and NEMA enclosure — US and Canada. Open the tool](https://entogo.ca/tools/transformer-sizing-calculator/)
- [Transformers ## Transformer configurator & quote Specify a transformer — type, capacity and voltages. Our engineers reply within one business day; the project-based quote follows the technical review. Open the tool](https://entogo.ca/products/transformer-quote/)

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_Markdown twin of https://entogo.ca/tools/ — generated at build time from the same content as the HTML page. Company facts, catalogue index and contact: https://entogo.ca/llms.txt_