Calculating Regulatory Weight Requires More Than the Manufacturer's Spec

The EU framework regulates based on maximum take-off mass (MTOM). The MmowW calculator walks you through determining your exact MTOM and maps it to the applicable EU category.

Opening the Tool

Visit mmoww.net/de/tools/weight-calculator/ from any device. No login required.

Step 1: Enter Base Drone Weight

Manufacturer-listed weight with standard battery. Enter in grams or kilograms.

Step 2: Add Battery Variations

Extended batteries weigh more. Enter each battery option to see how it affects your total.

Step 3: Add Payload and Accessories

  • Cameras and gimbals
  • Sensors (thermal, LiDAR, multispectral)
  • Prop guards
  • Lights and beacons
  • Remote ID modules

Step 4: Review Your EU Weight Category

  • Under 250g (C0). Minimal restrictions in A1 subcategory.
  • 250g-900g (C1). A1 subcategory with additional requirements.
  • 900g-4kg (C2). A2 subcategory — requires EU-Kompetenznachweis.
  • 4kg-25kg (C3/C4). A3 subcategory only — far from people.
  • Over 25kg. Requires Specific Category authorisation.

Step 5: Compare Configurations

Save different payload setups and compare their regulatory implications.

Key Benefits

Threshold awareness. See how close you are to the next weight category boundary. Multi-configuration support. Check each payload setup individually. Documentation. Save assessments for compliance records. Accuracy. Component-by-component input rather than estimates.

Real Scenarios in Action

Scenario 1: Accessory impact. Prop guards push a 240g drone over 250g — the calculator reveals the regulatory implications. Scenario 2: Sensor comparison. Two different sensors for the same platform place the drone in different weight categories.

FAQ

Q: Does MTOM include the parachute system?

A: Yes. Any equipment attached during flight contributes to MTOM.

Q: Should I use the weight with or without the gimbal?

A: Include the gimbal if it is attached during flight. Remove it only if you fly without it.

Q: What about drones with removable batteries?

A: Use the heaviest battery you fly with for worst-case assessment.

Try It Now — Free, No Signup Required

Calculate your weight category now

What's Next?

Weight classification connects to registration. Use the Registration Requirement Checker or plan flights with the Flight Planning Assistant. Every MmowW tool is free because compliance should never be a barrier to safe flying. Loved for Safety. Ready for complete compliance management? Start your 14-day free trial — €6.08/month, less than a coffee. Explore MmowW Drone SaaS