Mini Calculators
Quick individual calculations without project creation. Ideal for initial estimates or single rooms.
Mini Calculators Overview
Calculate the heat load of a single room according to DIN EN 12831-1
The room heat load calculator quickly determines the required heating capacity for individual rooms - ideal for renovations or radiator sizing.
What the calculator offers:
- Standard-compliant calculation according to DIN EN 12831-1
- Transmission and ventilation heat losses
- Various wall constructions and insulation standards
- Instant results without project creation
Calculate the annual yield of your photovoltaic system
The PV yield calculator determines the expected electricity yield based on location, orientation and system size - for a quick initial estimate.
What the calculator offers:
- Annual yield based on PVGis data
- Specific yield in kWh/kWp
- Monthly yield distribution
- Various orientations and tilt angles
Calculate heat load from actual energy consumption
The consumption heat load calculator determines your building's heat load from your gas, oil or pellet consumption - ideal for a quick assessment before heat pump planning.
What the calculator offers:
- Calculation from gas, oil, pellets, district heating or electricity
- Climate data based using PVGIS TMY data
- Full load hours and degree hours
- Specific heat load in W/m²
Calculate the optimal battery storage size for your PV system
The battery storage calculator determines the recommended capacity for your battery storage – tailored to your PV system, electricity consumption and usage behavior.
What the calculator offers:
- Recommended storage size based on PV capacity and consumption
- Consideration of EV charging and heat pump
- Minimum and optimal recommendations
- Factors like home office and backup power requirements
What are Mini Calculators?
Mini calculators are focused tools for individual calculation tasks. Unlike our complete calculators (Heat Load Calculator, Heat Pump Calculator, Solar Calculator), they focus on one specific calculation.
Advantages of Mini Calculators:
- Quick results without extensive input
- No project registration required
- Ideal for initial estimates
- Standard-compliant calculations
For comprehensive calculations: For complete building analyses with multiple rooms, PDF export and project storage, use our complete calculators.
Embed Mini Calculators on Your Website
Do you run your own website on topics like energy, construction or renovation? You can embed our mini calculators for free on your website and offer your visitors real added value.
How embedding works:
The mini calculators can be integrated into any website with just a few lines of HTML code – whether WordPress, Joomla, static HTML pages or other content management systems. The calculators are displayed as responsive widgets and automatically adapt to the width of your page area.
Benefits for website operators:
- Free: Embedding is permanently free with no hidden costs
- No registration: You don't need to sign up or create an account anywhere
- Responsive design: The calculators work on desktop, tablet and smartphone
- Always up-to-date: Updates and improvements are automatically applied
- Multilingual: Support for 11 languages – ideal for international websites
Find embedding instructions:
The complete instructions with embedding code can be found at the bottom of each mini calculator's page. There you will find step-by-step explanations on how to integrate the calculator into your website.
→ Room Heat Load Calculator – Embedding code at page bottom → PV Yield Calculator – Embedding code at page bottom → Consumption Heat Load Calculator – Embedding code at page bottom → Battery Storage Calculator – Embedding code at page bottom