How accurate are these calculations?

Formulas adhere strictly to industry engineering and trade handbook standards. Always allow safety margins for critical real-world installations.

Does this tool transmit any personal or project data?

No. All calculations run strictly client-side inside your browser. No data ever leaves your computer.

What does the EV Level 2 Home Charger Amperage & Speed Calculator give me?

It works out Delivered Charging Speed, Time to Reach Target Charge, Continuous Draw and Driving Range Added Per Hour, updating live as you change the inputs.

Is my data uploaded anywhere?

No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.

Does it work on a phone?

Yes. The layout adapts to small screens and needs no app or signup.

EV Level 2 Home Charger Amperage & Speed Calculator

Size home 240V electric vehicle EVSE charging circuits (30A, 40A, 50A, 60A), continuous draw (80% rule), charging speed (kW), and miles added per hour.

100% free
Private in browser
No signup
No watermarks

EV Usable Battery Pack Capacity (kWh)

Current State of Charge (%)

Target State of Charge (%)

Electrical Panel Dedicated Breaker (Amps)

Delivered Charging Speed (kW)

9.6

Time to Reach Target Charge (Hours)

5.2

Continuous Draw (Amps, 80% NEC rule)

Driving Range Added Per Hour (Miles/hr)

32.6

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About EV Level 2 Home Charger Amperage & Speed Calculator

Size home 240V electric vehicle EVSE charging circuits (30A, 40A, 50A, 60A), continuous draw (80% rule), charging speed (kW), and miles added per hour. You get Delivered Charging Speed, Time to Reach Target Charge and Continuous Draw straight away. Everything runs in your browser, so your data never leaves your device.

How to use EV Level 2 Home Charger Amperage & Speed Calculator

Enter your specific project and environment input parameters
Review the computed values, conversions, and ratings in real-time
Adjust variables to simulate different scenarios and tolerances

Key features

Instant dynamic client-side calculations
Interactive sliders and numeric inputs
Industrial and engineering formulas validated against standards
100% private and offline in-browser execution

Frequently asked questions

How accurate are these calculations?: Formulas adhere strictly to industry engineering and trade handbook standards. Always allow safety margins for critical real-world installations.
Does this tool transmit any personal or project data?: No. All calculations run strictly client-side inside your browser. No data ever leaves your computer.
What does the EV Level 2 Home Charger Amperage & Speed Calculator give me?: It works out Delivered Charging Speed, Time to Reach Target Charge, Continuous Draw and Driving Range Added Per Hour, updating live as you change the inputs.
Is my data uploaded anywhere?: No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.
Does it work on a phone?: Yes. The layout adapts to small screens and needs no app or signup.

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EV Home Charging Electrical Guide: Level 2 Circuit Amperage, NEC 80% Rule & Wire Gauge

Electrician guide to installing a Level 2 240V home EV charger. Compare 30A vs 40A vs 50A vs 60A breaker options, continuous load sizing, charging speeds, and miles added per hour.