Energy conversion

kWh to Joules conversion

Convert kilowatt-hours (kWh) to joules (J). Exact: 1 kWh = 3,600,000 J. Formula, examples, chart. Switch kWh → J or J → kWh. Runs locally in your browser.

Instant result

Result

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Enter values to convert.

Inputs —

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Formula —

Formulas

Core equations used by this converter.

kWh → JJ = kWh × 3600000

Exact factor1 kWh = 3600000 J

J → kWhkWh = J × 2.77778e-07

iLinear conversion using factor 3600000. Prefer the exact factor over rounded multipliers when precision matters.

How to use

1

Choose kWh → J or J → kWh

Use the tabs to switch direction. Forward mode needs kilowatt-hours; reverse uses the opposite unit.

2

Enter the value

Type a non-negative value in the active unit field.

3

Convert and read the result

Use Convert or let the result update automatically.

Example conversions

Common values with formula and result.

ϟ

1 kWh to joules

1 kWh to joules

1 × 3_600_000 = 3,600,000 J

3,600,000 J

ϟ

0.5 kWh to joules

0.5 kWh to joules

0.5 × 3_600_000 = 1,800,000 J

1,800,000 J

ϟ

2.5 kWh to joules

2.5 kWh to joules

2.5 × 3_600_000 = 9,000,000 J

9,000,000 J

ϟ

Reverse: 3,600,000 J → kWh

Reverse: 3,600,000 J → kWh

3_600_000 / 3_600_000 = 1 kWh

1 kWh

kWh to Joules conversion specification

Version 1.1.0 · Engine tested

Calculation status

Engine tested 4 published cases
Named expert review Not performed
Calculation version 1.1.0

Definition: Kilowatt-hours (kWh) converts to J using a fixed linear factor. Convert kilowatt-hours (kWh) to joules (J). Exact: 1 kWh = 3,600,000 J. Formula, examples, chart.
What it calculates: Value between kWh and J. Switch direction with the converter tabs.
Inputs: Kilowatt-hours (kWh) or reverse unit (J)
Outputs: Converted value in J or kWh
Formula: J = kWh × 3600000 · 1 kWh = 3600000 J
kWh to joules conversion table: kWh Joules (J) Megajoules (MJ)
0.001 kWh 3600 J 0.0036 MJ
0.1 kWh 360,000 J 0.36 MJ
0.5 kWh 1,800,000 J 1.8 MJ
1 kWh 3,600,000 J 3.6 MJ
5 kWh 18,000,000 J 18 MJ
10 kWh 36,000,000 J 36 MJ
Assumptions: Conversion runs locally in the browser; values are not uploaded.
Uses the standard factor/definition for these units.
Units: kWh → J
J → kWh
Boundary conditions: Empty or non-numeric input yields no valid result.
Non-negative values are expected for physical quantities.
Example: 1 kWh → 3600000 J
Validation cases: 1 kWh → 3600000 J
10 kWh → 36000000 J
50 kWh → 180000000 J
100 kWh → 360000000 J
Sources: SI / international unit definitions where applicable
CalculatorX conversion factors (local runtime)
Calculation version: 1.1.0

Background

Interpretation and common distinctions.

Use the converter tabs to switch direction when available. Results for kWh to Joules conversion update locally in your browser.

Frequently asked questions

Key distinctions behind the conversion.

How do you convert using kWh to Joules conversion?

Use 1 kWh = 3600000 J. Example: 1 kWh to joules → 3,600,000 J.

Can I switch direction?

Use the converter tabs when available, or open the related reverse tool from Related.

Does this run online or locally?

Calculation runs locally in your browser. Values are not uploaded.

How precise are the results?

Results follow the formulas on this page. Round to the precision your use case needs.