Math

EV Range Converter

Convert EV range across WLTP, EPA, NEDC, and CLTC standards with instant cross-standard estimates.

By Calculator Suite Pro Editorial Team | Last updated March 18, 2026

Use this page for quick formula checks, conversions, and worked examples where units or rounding can change the answer.

Explore the Math group for nearby calculators, examples, and guide links.

NEDC (km)

WLTP

WLTP = NEDC x 0.85

EPA

EPA = NEDC x 0.72774

NEDC

NEDC = NEDC

CLTC

CLTC = NEDC x 1.036585

Input Standard

NEDC

Input Range

0.00 km

Reference

NEDC baseline

Cross-standard estimate

About this converter

This EV Range Converter helps you compare electric vehicle range values across the most common testing standards: WLTP, EPA, NEDC, and CLTC.

Because these standards use different test cycles and assumptions, the same vehicle can show different range numbers in each system.

Use this tool to get quick cross-standard estimates when researching imported EV models, reading mixed-spec listings, or comparing reviews from different regions.

How the calculation works

A short explanation of the formula, conversion rule, or arithmetic path behind the result.

The converter uses NEDC as a baseline and applies fixed conversion ratios between standards.
From NEDC baseline: WLTP = NEDC x 0.85, EPA = NEDC x 0.85 / 1.168, CLTC = NEDC x 0.85 / 0.82.
When you enter a value in any source standard, the tool first normalizes to NEDC and then computes target standard estimates.

Formula or conversion rule

These are the formulas, unit rules, and rounding assumptions used by this math page.

The converter uses NEDC as a baseline and applies fixed conversion ratios between standards.
From NEDC baseline: WLTP = NEDC x 0.85, EPA = NEDC x 0.85 / 1.168, CLTC = NEDC x 0.85 / 0.82.

Where this math tool helps

Use these scenarios to decide whether the calculation fits a homework, measurement, or quick-check task.

Comparing EV specs from US, Europe, and China listings
Converting WLTP values to EPA-style estimates before buying
Checking realistic expectation gaps between standards
Creating side-by-side EV comparison sheets
Researching imported EV models with mixed documentation

How to calculate

Select the source standard (WLTP, EPA, NEDC, or CLTC).
Enter the EV range value in kilometers.
Review converted estimates for all standards in the result cards.
Use the formulas shown in each row to understand how values were converted.

Math mistakes to avoid

Most errors come from mixed units, reversed inputs, or rounding too early.

Treating converted values as guaranteed real-world mileage.
Mixing miles and kilometers without unit conversion first.
Assuming all manufacturers report under the same test standard.
Comparing two EVs without confirming source standard labels.

Calculation tips

Always keep units consistent in kilometers when using this converter.
Use converted values for comparison guidance, not exact trip planning.
Check weather, speed, terrain, and battery age for real-world range expectations.
For public listings, display both source and converted standards for clarity.

Glossary

Quick definitions for units, formulas, and math terms used on this page.

WLTP

Worldwide Harmonized Light Vehicles Test Procedure, widely used in Europe.

EPA

US Environmental Protection Agency range testing standard, often more conservative.

NEDC

New European Driving Cycle, an older test standard used in many historical EV listings.

CLTC

China Light-Duty Vehicle Test Cycle used in Chinese EV documentation.

Worked examples

NEDC to WLTP

Input: NEDC: 600 km

Output: WLTP: 510 km (estimated)

WLTP to EPA

Input: WLTP: 500 km

Output: EPA: ~428.08 km (estimated)

CLTC to EPA

Input: CLTC: 550 km

Output: EPA estimate shown in output cards

FAQ

Is this EV range conversion exact for every car?

No. It provides standard-to-standard estimates. Real-world range varies by driving style, weather, speed, and battery condition.

Which standard is usually closest to real-world usage?

EPA is often considered more conservative than NEDC and CLTC, but actual results still vary by driver and route.

Can I convert in reverse (for example EPA to WLTP)?

Yes. Select EPA as input, enter the value, and the tool computes all other standards automatically.

Does this converter support miles?

This version uses kilometers. Convert miles to kilometers first for accurate cross-standard output.

Math references and update notes

Last updated: March 18, 2026

Reviewed by Calculator Suite Pro Editorial Team.

Check required precision and rounding rules when the result will be used formally.

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