EV Charging Time Calculator USA

EV charging time and cost

Battery size

kWh

Start charge

End charge

Available time (optional)

hours

Charging power

Charger type

⚡AC wall charger

Your charging time 10 hr 70.0 kWh · ~270 miles

Estimated cost $21.00 at $0.18/kWh

Rate comparison

Portable charger · 2.3 kW

$0.13$0.16$0.18

30 hr 26 min

$9.10at $0.13/kWh

AC wall charger · 7 kW

$0.13$0.16$0.18

10 hr

$9.10at $0.13/kWh

3-phase AC charger · 22 kW

$0.13$0.16$0.18

3 hr 11 min

$9.10at $0.13/kWh

DC fast charger · 50 kW

1 hr 24 min

$33.60at $0.48/kWh

DC rapid charger · 150 kW

28 min

$33.60at $0.48/kWh

Ultra rapid charger · 250 kW

17 min

$39.20at $0.56/kWh

Typical EV charging time and cost in the United States

The table below shows estimated charging time and cost across all charger types, each paired with a typical electricity price for that charging method.

Charger type	Power	Estimated time	Electricity price	Estimated cost
Portable charger	2.3 kW	30 hr 26 min	$0.13 per kWh	$9.10
AC wall charger	7 kW	10 hr	$0.18 per kWh	$12.60
3-phase AC charger	22 kW	3 hr 11 min	$0.32 per kWh	$22.40
DC fast charger	50 kW	1 hr 24 min	$0.48 per kWh	$33.60
DC rapid charger	150 kW	28 min	$0.48 per kWh	$33.60
Ultra rapid charger	250 kW	17 min	$0.56 per kWh	$39.20

Based on a typical EV (100 kWh battery) charging from 10% to 80% (70 kWh added). Actual charging time depends on the vehicle's maximum charge rate and charging curve. Cost uses typical US electricity prices for each charger type.

How this calculator works

This calculator estimates both how long it takes to charge your EV and how much that charge will cost. The hero card shows your charging time on the left and estimated cost on the right, using a typical electricity price for the selected charger type. The charger cards below compare time and cost across all common charger types at a glance.

Home charger cards include tappable price chips so you can compare EV off peak, off peak and standard rate costs for the same charger. Public and DC charger cards use fixed typical prices for those charger types.

If you enter an available time, the cards add context showing how much energy and range each charger type would add in that time window, what charge level you would reach, the cost for that partial charge, and whether the charger finishes early or needs more time.

Formulas

Energy needed (kWh) = Battery size × (End charge − Start charge) ÷ 100

Charging time (hours) = Energy needed ÷ Charging power

Charging cost ($) = Energy needed × Electricity price

Energy in available time (kWh) = Charging power × Available time (capped at energy needed)

Worked example — charging time and cost

Battery size: 100 kWh
Start charge: 10%
End charge: 80%
Charging power: 7 kW (AC wall charger)
Electricity price: $0.18 per kWh (Home standard rate)

Energy needed: 100 × (80 − 10) ÷ 100 = 70.0 kWh

Charging time: 70.0 ÷ 7 = 10 hr

Charging cost: 70.0 × $0.18 = $12.60

Worked example — available time

Available time: 6 hours
Charging power: 2.3 kW (Portable charger)
Battery size: 100 kWh, starting at 10%
EV efficiency: 26 kWh per 100 miles
Electricity price: $0.13 per kWh (EV off peak)

Energy added: 2.3 × 6 = 13.8 kWh

Charge reached: 10% + (13.8 ÷ 100 × 100) = ~24%

Range added: 13.8 ÷ 26 × 100 = ~55 miles

Cost: 13.8 × $0.13 = $1.79

Real-world note

This calculator assumes a constant charging rate across the full charge window. In practice, most EVs throttle charging speed above 80% state of charge to protect the battery. Each charger card shows cost using a typical electricity price — use the price chips on home charger cards to compare different home rates.

Price preset guide

Each charger card uses a typical electricity price for that charger type. Home charger cards include price chips so you can compare different home rates.

Home solar is charging from your own rooftop generation. The cost shown is not a bill — it is the feed-in credit you give up by using that energy yourself instead of exporting it, which is what makes solar charging the cheapest option here.

EV off peak refers to very low EV specific overnight pricing offered by some electricity retailers.

Home off peak refers to a more typical off peak residential rate.

Home standard rate refers to a flat residential electricity tariff.

Public AC, DC fast and Ultra rapid DC refer to common public charging categories. Prices vary between networks and locations.

These labels are shorthand for the tiers used across this site. Set your own rate for any of them in the My EV panel and every figure here recalculates. Charging time does not change with price, but the rate you pay does — so the cheapest charger is rarely the fastest one.

Frequently asked questions

How long does it take to charge an EV at home?

Charging time at home depends on your charger and battery size. A standard 7 kW AC wall charger takes exactly 10 hours to charge a 100 kWh battery from 10% to 80%. A slower 2.3 kW portable charger takes over 30 hours for the same charge. Most EV owners with a wall charger charge overnight and start each day with a full battery.

Why is charging above 80% slower?

Most EVs intentionally slow the charging rate above 80% state of charge to reduce heat and protect battery longevity. This is called the charging curve. The slowdown means the final 20% of charge can take as long as the first 80%. This calculator assumes a constant rate across the charge window, so estimates to 100% will be shorter than real-world times.

How long does DC fast charging take?

At 50 kW, a 100 kWh battery charged from 10% to 80% takes around 1 hour 24 minutes. At 150 kW that drops to around 28 minutes, and at 250 kW to around 17 minutes. Real-world DC fast charging times can be longer if the battery is warm, the car limits peak power intake, or the charger is shared between vehicles.

Does battery size affect charging time?

Yes. A larger battery requires more energy to charge across the same percentage window. A 100 kWh battery charged from 10% to 80% requires 70 kWh — 40 percent more than a 70 kWh battery requiring 49 kWh — so it takes proportionally longer at the same charging power. Use the battery size input above to adjust for your own vehicle.