Need to mix 2-stroke fuel using liters instead of gallons? Whether you're in Europe, Australia, or anywhere else using the metric system, getting the right gas-to-oil ratio in milliliters (mL) is just as important — and easy. For instant calculations, try our 2-Stroke Oil Mix Calculator to get precise measurements for any fuel volume and ratio.
This guide covers everything you need to know about mixing 2-stroke fuel with metric measurements, including charts, examples, and tool-specific recommendations.
What You'll Learn
- How 2-stroke fuel mix ratios work in metric
- Conversion chart for 1L, 5L, and 10L of fuel
- Common mix ratios (50:1, 40:1, 32:1)
- Tool-specific ratio recommendations
Understanding Metric 2-Stroke Mix Ratios
2-stroke mix ratios tell you how many parts of petrol (gasoline) to how many parts of oil. The concept is the same whether you're using metric or imperial measurements.
For example:
50:1 → 50 parts petrol to 1 part oil
40:1 → 40 parts petrol to 1 part oil
To convert this into metric:
Oil (mL) = Fuel Volume (L) × 1000 ÷ Mix Ratio
So, 1L of petrol at 50:1 → 1000 ÷ 50 = 20 mL of oil
This is simply because 1 liter = 1000 milliliters, making the conversion straightforward with metric units.
2-Stroke Oil Mix Chart (Metric Liters)
Use this handy reference chart to quickly determine how much oil you need for common fuel volumes in liters:
| Fuel (Liters) | 50:1 Mix | 40:1 Mix | 32:1 Mix | 25:1 Mix |
|---|---|---|---|---|
| 1 L | 20 mL | 25 mL | 31 mL | 40 mL |
| 2 L | 40 mL | 50 mL | 63 mL | 80 mL |
| 3 L | 60 mL | 75 mL | 94 mL | 120 mL |
| 5 L | 100 mL | 125 mL | 156 mL | 200 mL |
| 10 L | 200 mL | 250 mL | 313 mL | 400 mL |
Tip: Use a measuring jug or syringe for precise mL quantities.
Mix Ratio Recommendations by Tool
Different 2-stroke engines have different oil requirements based on their design and usage. Here are the recommended ratios for common equipment:
| Tool Type | Recommended Ratio | Notes |
|---|---|---|
| Chainsaw | 40:1 or 50:1 | High-RPM; extra oil helps durability |
| Brush Cutter | 50:1 | Follow brand instructions |
| Hedge Trimmer | 50:1 | Most new models require lean mix |
| Moped/Scooter | 40:1 | Varies; check manual |
| Dirt Bike | 32:1 | Especially for racing models |
Always defer to your machine's owner manual if the recommended ratio differs from these general guidelines.
Example: Mixing 5L of Fuel for a 40:1 Ratio
You're prepping fuel for a hedge trimmer that requires a 40:1 mix:
Fuel volume: 5 liters
Mix ratio: 40:1
Formula: 5 × 1000 ÷ 40 = 125 mL of oil
Use a clean jerry can or fuel-safe container. Always:
- Add oil to petrol (not the other way around)
- Mix thoroughly before use
- Label your container with the ratio and date mixed
Measurement Tips for Accuracy
Accurate measurement is crucial, especially with leaner mixes like 50:1 where small errors can impact engine performance. Here are some tools and methods for precise oil measurement:
- Measuring syringe: Medical-type syringes (without needles) are perfect for precise mL measurements
- Graduated measuring cup: Many 2-stroke oil bottles come with measurement markings
- Bottle caps: Some oil bottle caps hold exactly 20mL, which is perfect for a 1L mix at 50:1
- Pre-mixed bottles: Some manufacturers offer bottles with measurement chambers
If you regularly mix the same amount, consider marking a container at the exact oil level you need for quick reference.
Metric 2-Stroke FAQs
Q: Can I eyeball oil amounts if I don't have a measuring tool?
A: It's risky. Use a marked syringe, cap, or container to be accurate — especially with ratios like 50:1.
Q: What happens if I use 100 mL instead of 125 mL in 5L?
A: You're using a 50:1 mix instead of 40:1. This may under-lubricate older engines.
Q: Can I use synthetic oil in metric mixes?
A: Yes, just follow the same ratio in mL. Synthetic burns cleaner and offers more protection.
Q: Is it okay to mix more fuel than I need?
A: Only if you'll use it within 30–60 days. Use fuel stabilizer if storing longer.
Use the HandyCalcs 2-Stroke Mix Calculator
Use our 2-Stroke Oil Mix Calculator to:
- ✅ Input liters or gallons of petrol
- ✅ Select your preferred ratio (25:1–100:1)
- ✅ Instantly see oil amount in mL and oz
Precision in seconds. Fuel your 2-stroke engine the right way.
Calculate Your Mix NowKey Points Covered
- Metric 2-stroke mix ratio calculations (liters to milliliters)
- Common mix ratios (50:1, 40:1, 32:1, 25:1) for different equipment
- Complete conversion chart for 1L, 5L, and 10L mixes
- Equipment-specific ratio recommendations
- Step-by-step mixing examples with metric measurements
- Using the HandyCalcs 2-Stroke Oil Mix Calculator