Calculate daily and monthly energy output from solar panels.
Solar Panel Output Calculator
Solar Panel Output
P = Area × Eff × Sun
m²
%
h/day
Daily Output
18.00kWh
Monthly
540kWh
Solar Generation
About this calculator
What is the Solar Panel Output Calculator?
Solar Panel Output Calculator calculate daily and monthly energy output from solar panels. It is part of Home of Calculators's Environment Calculators suite for carbon footprint, energy savings, and sustainability metrics. The calculator is designed for environmentalists, homeowners, conscious consumers, but anyone can use it. No signup, no ads, no tracking. Just accurate math, computed locally in your browser using a BigNumber-precision math engine.
Formula Reference
The Formula
P = Area × Efficiency × Irradiance × Sun Hours
Solar panel output depends on the panel area, efficiency rating (typically 15-22%), solar irradiance (~1000 W/m² at peak), and the number of peak sun hours per day at your location.
Variables
AreaPanel area (m²)EfficiencyPanel efficiency (%)Sun HoursPeak sun hours/day (h)Worked Example
Area = 20Efficiency = 18%Sun Hours = 5
Result: ~18 kWh/day
How to use the Solar Panel Output Calculator
- 1
Determine panel area
Calculate total panel surface area in square meters.
- 2
Find efficiency
Check your panel specifications (typically 15-22%).
- 3
Calculate daily output
Daily Wh = Area × (Efficiency/100) × 1000 × Sun Hours.
- 4
Convert to kWh
Divide by 1000 to get daily kWh output.
Quick tips
- All calculations run locally in your browser; your data never leaves your device.
- For best results on mobile, rotate to landscape when entering many values.
- Bookmark this page to come back to your calculation anytime.
- Need a different calculator? Try our visual builder to create your own.
Why Home of Calculators
- 100% private (calculations run in your browser)
- 128-bit BigNumber precision (no rounding errors)
- Works on any device: phone, tablet, desktop
- Free forever (no signup, no ads, no upsells)
Frequently asked questions
Is the Solar Output accurate?
+
Yes. Home of Calculators uses a BigNumber-precision math engine (64-128 decimal digits) to ensure calculations are accurate. We run 96+ automated tests covering unit conversion, financial formulas, health formulas, and more. For critical decisions (financial, medical, legal), we still recommend consulting a qualified professional.
Is the Solar Panel Output Calculator free?
+
Yes. Every calculator on Home of Calculators is 100% free, with no signup, no ads, and no hidden fees. The entire platform is free forever.
Do you store the values I enter?
+
No. All calculations happen in your browser. We never see, store, or transmit your inputs to any server. Your data stays on your device.
Can I use the Solar Output on my phone?
+
Yes. Home of Calculators is fully responsive and works on any device (phone, tablet, laptop, or desktop). The interface adapts to your screen size.
Can I embed this calculator on my own website?
+
Yes. Click the "Share" button to get an iframe embed code. The embedded calculator will look like any other Home of Calculators widget. You can also build a fully customized version using our visual builder.
Can I build my own custom calculator?
+
Absolutely. Home of Calculators's visual builder lets you add fields, write formulas, choose a theme, and brand the result with your own logo, all without writing code.