EV tool · EPA · WLTP · NEDC · CLTC
EV range converter
A range figure only means something next to the test that produced it. Put in the claimed range and its cycle, and this converts it to the other three — as an honest low–high band, because no exact conversion exists.
The bands this converter uses
Each cycle is expressed against EPA, the strictest of the four in practice. To convert, the tool divides by the source band and multiplies by the target band, taking the widest combination for the low and high ends.
| Cycle | EPA-basis figure, roughly | Bias |
|---|---|---|
| EPA (United States) | 100% of claimed | Most realistic of the four |
| WLTP (Europe and others) | 85–90% of claimed | Moderately optimistic |
| NEDC (older, parts of Asia) | 75–80% of claimed | Very optimistic |
| CLTC (China) | 65–75% of claimed | The most optimistic |
These are rules of thumb, not regulator figures. No official conversion exists, because these are different laboratory tests rather than different units, and the gap varies from car to car. Where a manufacturer publishes the same trim on two cycles, trust those figures over this tool.
Then take off for your own driving
Every figure here is still a laboratory number. Fast motorway driving, cold winters and air conditioning running all day in a hot climate all cost range on top, while slow stop-start traffic is where electric cars do best, thanks to regenerative braking. Our explainer on EPA vs WLTP vs NEDC vs CLTC covers what each test is and how real conditions change the picture.
Questions
How do I convert WLTP range to EPA?
There is no official conversion, because WLTP and EPA are different tests. A widely used rule of thumb is that an EPA figure comes out roughly 10–15% below the WLTP figure for the same car, so 500 km WLTP is roughly 425–450 km on an EPA basis.
How do I convert NEDC range to WLTP or EPA?
NEDC is the most generous of the European cycles. As a rule of thumb, discount an NEDC figure by roughly 20–25% to estimate EPA, which puts it roughly 6–17% below the WLTP figure for the same car. The converter applies both bands and shows the spread.
Why is CLTC range so high?
CLTC, the cycle used for cars homologated in China, runs at low average speeds with a large share of urban driving, which suits electric cars. It is the most optimistic of the four: as a rule of thumb, an EPA-basis figure is roughly 25–35% lower.
Which range figure is closest to real driving?
EPA is generally the closest of the four, because it tests at higher speeds and includes a highway cycle. It is still a laboratory figure: sustained motorway speed, cold weather and constant air conditioning all take more off.
Is this converter accurate?
It is a shortlisting tool, not an official conversion. The real gap between cycles varies by car, so the converter gives a range rather than a single number. When a manufacturer publishes figures on two cycles for the same trim, use those instead.
Related
- Compare every EV and hybrid we track — with the test cycle shown beside every range
- Longest-range electric cars, ranked
- EV savings calculator — does an EV actually pay back for you?
- How to track EV charging costs and cost per km
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