SuperCalX

Drone Flight Time Calculator

Estimate the flight time of a drone based on battery capacity and average current draw.
Calculator
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Analysis
Interpretation of the current calculator output

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How to Use

Step-by-step instructions
  1. 1Enter the battery capacity (mAh).
  2. 2Enter the average current draw (Amps) at hover/cruise.
  3. 3The calculator will estimate the safe flight time.

Flight Duration

Calculates flight time by dividing battery capacity by average current draw, applying an 80% discharge limit for safety.
Time = (Capacity / Current) × 0.8

Variables:

CapacityBattery capacity in mAh
CurrentAverage draw in Amps
0.8Safe discharge factor

Example

Quadcopter

Inputs:

Capacity:5000 mAh
Current:20 A

Steps:

  1. 1.Capacity = 5 Ah
  2. 2.Total Time = 5 / 20 = 0.25 hours = 15 mins
  3. 3.Safe Time = 15 * 0.8 = 12 mins
Result:
12 Minutes

Frequently Asked Questions

How do I know the current draw?

You can estimate it based on motor thrust data sheets (e.g., amps at hover thrust) or measure it with a power meter.