Calculate Diesel Generator Fuel Consumption Per Hour
Accurately estimate your diesel generator’s fuel usage in liters per hour with our free online tool. Designed for engineers, contractors, and businesses, this calculator simplifies complex formulas into instant results. Just input your generator’s power (kW) and efficiency to get started.
Why use this tool?
- ✅ Save time : Avoid manual calculations.
- ✅ Improve efficiency : Optimize fuel costs for your projects.
- ✅ Accurate results : Based on industry-standard energy density (10,700 Wh/liter).
Fuel Consumption Calculator
Frequently Asked Questions (FAQs)
1. What is generator efficiency?
Generator efficiency refers to how effectively a diesel engine converts fuel energy into electrical power. It’s typically 30–45% for most generators. Lower efficiency means higher fuel consumption.
2. How do I find my generator’s efficiency?
Check your generator’s manual or specifications sheet. Efficiency is often listed as a percentage (e.g., 35%). If unavailable, use 30% as a baseline.
3. What is the formula for fuel consumption?
The formula is:
Fuel Consumption (L/hr) = (Power in kW × 1000) / (Energy Density of Diesel × Efficiency)
- Energy density = 10,700 Wh/liter (standard for diesel).
4. Can this tool work for all generator sizes?
Yes! It works for small portable generators (e.g., 5 kW) to industrial units (e.g., 2000 kW).
5. How to reduce diesel generator fuel consumption?
- Use a higher-efficiency generator.
- Avoid overloading the generator.
- Perform regular maintenance (e.g., clean filters).
Why Trust Our Calculator?
Our tool uses the same formula trusted by engineers globally.