# What Length EV Charging Cable Do I Need? 5m, 7m or 10m

By EV Charge Cables · Published 1 October 2026

**The short version**

5m suits most home driveways, while 7m or 10m is better for on-street parking or an awkward car inlet position.

- Measure socket to inlet, then add slack for parking and routing
- Longer cables cost more and are heavier to handle and store
- Length does not change your charging speed

For most home driveways a 5m EV charging cable is the right length, giving enough reach from a wall socket or wallbox to the car with a little slack. Choose 7m or 10m if you park on-street, use shared or public untethered chargers, or your car inlet sits far from the socket. The rule is simple: measure the route from the socket to the charging inlet, add slack for parking and routing, then match the result to a [Type 2 cable](https://www.evchargecable.co.uk/type-2-charging-cables). Longer is not always better, because extra length adds weight, cost and cable to store.

**One thing first:** cable length only matters if you supply the cable, that means an untethered home charger, a portable granny charger, or public and shared untethered points. If you have a [tethered charger](https://www.evchargecable.co.uk/blogs/guides/tethered-vs-untethered-ev-chargers), the lead is permanently attached and its length is fixed when the unit is installed, so there is nothing to choose. This guide is for everyone buying their own cable.

### At a glance: which cable length

| Length | Best for | Trade-offs |
| --- | --- | --- |
| 5m | Most driveways and home wallboxes | Can fall short on-street or if the inlet is far |
| 7m | Awkward inlet position, longer driveways | Slightly heavier and pricier than 5m |
| 10m | On-street parking, shared and public points | Heaviest, dearest, more to coil and store |

### How do I measure the right length?

Do not guess, and do not just measure the straight line. Work it out in four steps:

1. **Note where the car parks and where the socket is.** Use the spot you actually park in, not the closest the car could get.
2. **Measure the route the cable will take,** not the straight line. The lead runs from the socket, along or around the car, to the inlet, which may be at the front wing, a rear corner, or the opposite side. Measure the path it genuinely follows.
3. **Add slack.** Add roughly 1 to 2 metres so the cable is never pulled tight and copes with parking a little differently each day.
4. **Round up to a standard size.** Cables come in 5m, 7m and 10m, so round your figure up to the next length.

Worked example: a wallbox 3m from the driveway, a car that parks with its inlet about 2m further along, plus 1 to 2m of slack, comes to roughly 6 to 7m, so a 7m cable is the safe choice.

### Why is 5m right for most driveways?

5m is the popular choice because it covers the typical gap between a home wallbox and a car parked on a driveway with comfortable slack. It is light enough to handle easily, coils into a boot or holster without fuss, and costs less than longer options. Most home wallboxes are fitted close to where the car parks, so 5m rarely leaves you short. If your setup is a standard driveway with the charger near the parking spot, start here.

### When should I choose 7m or 10m?

Go longer when reach is genuinely a problem. On-street parking, shared chargers in car parks, and points where you cannot control exactly where you stop all favour 7m or 10m. The same applies if your charging inlet sits at the front or on the opposite side from the socket, forcing the cable around the car.

- **7m:** longer driveways, awkward inlet positions, a bit of extra insurance.
- **10m:** on-street bays, public untethered points, unpredictable parking.

### Does a longer cable charge slower?

No, a longer cable does not meaningfully slow charging at home speeds. The charging rate is set by your supply, the cable rating and the car, so a 5m and a 10m cable of the same rating charge at the same speed. The real trade-offs of length are weight and price, not speed. A 10m lead is noticeably heavier to carry and coil, and costs more, so buy the length you need rather than the longest you can find.

### Coiled or straight for the length I need?

Both come in a range of lengths, and the choice is about storage and handling. Straight cables are lighter to handle for a given length and lie flat, but need tidy storage such as a bag or holster. Coiled cables spring back and take up less space, which suits smaller boots, though they can feel stiffer and heavier. For longer 7m or 10m leads especially, think about how you will carry and store it, and read [coiled vs straight EV charging cables](https://www.evchargecable.co.uk/blogs/guides/coiled-vs-straight-ev-charging-cables) before deciding.

### Mistakes to avoid

- **Buying the longest "just in case".** A 10m cable you do not need is heavier to carry and coil, costs more, and is more to store. Buy the length that reaches with a little slack, not the maximum.
- **Forgetting where the inlet is.** Measure to the actual inlet, front wing, rear corner or opposite side, not the nearest point of the car, or the cable may not reach around.
- **Trying to extend a short cable.** Never add a domestic extension lead to gain reach, it is a fire and safety risk and is not designed for the sustained current. Buy a single cable of the correct length, as explained in [using an extension lead with a charger](https://www.evchargecable.co.uk/blogs/guides/can-you-use-an-extension-lead-with-a-granny-charger).
- **Leaving slack on the ground.** Coil the excess tidily to avoid trip hazards and cable damage, especially across a pavement.

**Quick tool:** find the right lead length for your setup with our free [EV charging cable length calculator](https://www.evchargecable.co.uk/tools/ev-charging-cable-length-calculator).

### Frequently asked questions

#### Is a 5m cable long enough for a home charger?

For most home wallboxes and driveways, yes. Chargers are usually fitted close to where the car parks, so 5m reaches with slack to spare. Measure the route from the socket to your car inlet and add a metre or two. If the inlet is on the far side of the car, consider 7m instead.

#### What length do I need for on-street charging?

Choose 7m or 10m for on-street or public untethered points, because you cannot always control where you park. A longer lead reaches the inlet even when the car sits a little further from the post. Keep it coiled tidily to avoid trip hazards and cable damage on the pavement.

#### Are longer EV cables heavier and pricier?

Yes, more copper and insulation means more weight and cost. A 10m cable is noticeably heavier to lift and coil than a 5m one, and it costs more. That is why the advice is to buy the length you actually need rather than defaulting to the longest available option.

#### Can I use an extension lead to add length?

No, you should not extend an EV charging cable with a domestic extension lead. It creates a fire and safety risk and is not designed for the sustained current. If you need more reach, buy a single cable of the correct length. This applies to Type 2 leads and to portable chargers alike.

#### Does cable length affect charging speed?

No, not meaningfully at home charging speeds. Your supply, the cable rating and the car set the rate, so a longer cable of the same rating charges at the same speed. The practical downsides of length are extra weight and cost, not slower charging.

#### Should I get coiled or straight for a longer cable?

It depends on storage. Straight cables handle more easily for a given length but need a bag or holster. Coiled cables save space and spring back, which suits a small boot, though they can be stiffer. For 7m or 10m leads, decide based on how you will carry and store them.

Once you have your length, match the cable to your car and supply. Read [which EV charging cable do I need](https://www.evchargecable.co.uk/blogs/guides/which-ev-charging-cable-do-i-need) to confirm the connector and rating, then choose your exact lead on the [Type 2 charging cables](https://www.evchargecable.co.uk/type-2-charging-cables) page. Get both right and you have a cable that reaches, coils away neatly, and charges at your car's full home rate.

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Canonical version: https://www.evchargecable.co.uk/blogs/guides/what-length-ev-charging-cable-do-i-need

EV Charge Cables, EV charging cables matched to your car: https://www.evchargecable.co.uk. Some links in this article are Amazon affiliate links; as an Amazon Associate we earn from qualifying purchases at no extra cost to you.