convertimate Solar irradiance

Watts per square meter to kWh per m² per day

Type a value in W/m² to get it in kWh/m²/day instantly.

24kWh/m²/day

That's about the same as full midday sun. A two-square-meter panel at 20% would make about 400 W.

What it means

How much sun is that?

Panels are rated at 1,000 W/m², called one sun. kWh/m² per day here is averaged over 24 hours, not over daylight only.

The math

How to convert W/m² to kWh/m²/day

To convert watts per square meter to kWh per m² per day, multiply by 0.024.

Example: 1,000 W/m² × 0.024 = 24 kWh/m²/day.

In the other direction, 1 kWh/m²/day = 41.6667 W/m².

Every unit

Your irradiance in every unit

Tables

W/m² to kWh/m²/day conversion table

W/m² to kWh/m²/day conversion table
W/m²kWh/m²/day
50 W/m²1.2 kWh/m²/day
100 W/m²2.4 kWh/m²/day
200 W/m²4.8 kWh/m²/day
400 W/m²9.6 kWh/m²/day
600 W/m²14.4 kWh/m²/day
800 W/m²19.2 kWh/m²/day
1,000 W/m²24 kWh/m²/day
1,200 W/m²28.8 kWh/m²/day
1,361 W/m²32.664 kWh/m²/day
1,500 W/m²36 kWh/m²/day
kWh/m²/day to W/m² conversion table
kWh/m²/day to W/m² conversion table
kWh/m²/dayW/m²
50 kWh/m²/day2,083.33 W/m²
100 kWh/m²/day4,166.67 W/m²
200 kWh/m²/day8,333.33 W/m²
400 kWh/m²/day16,666.7 W/m²
600 kWh/m²/day25,000 W/m²
800 kWh/m²/day33,333.3 W/m²
1,000 kWh/m²/day41,666.7 W/m²
1,200 kWh/m²/day50,000 W/m²
1,361 kWh/m²/day56,708.3 W/m²
1,500 kWh/m²/day62,500 W/m²

Quick answers

Quick answers

How many kWh/m²/day is 1 W/m²?
1 W/m² is 0.024 kWh/m²/day.
How many kWh/m²/day is 10 W/m²?
10 W/m² is 0.24 kWh/m²/day.
How many kWh/m²/day is 1,000 W/m²?
1,000 W/m² is 24 kWh/m²/day.

The units

About these units

Watts per square meter (W/m²)

The SI unit of irradiance. Full sun is about 1,000 W/m².

kWh per m² per day (kWh/m²/day)

Peak sun hours: a whole day of sunshine as one number. 5 is a sunny climate.

Learn more about irradiance units

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