Convert values to G force

[ErwinV]

Hi I am having a hard time with the MPU6050.

What I want to achieve

I want to read values from the MPU6050 and convert these values to absolute G forces for measurement in a small airplane.
The sensitivty needs to be as high as possible +- 16G?

I've been able to read raw data from the sensor by using this code:

void loop() {
// read raw accel/gyro measurements from device
accelgyro.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);

// these methods (and a few others) are also available
//accelgyro.getAcceleration(&ax, &ay, &az);
//accelgyro.getRotation(&gx, &gy, &gz);

#ifdef OUTPUT_READABLE_ACCELGYRO
    // display tab-separated accel/gyro x/y/z values
    Serial.print("a/g:\t");
    Serial.print(ax); Serial.print("\t");
    Serial.print(ay); Serial.print("\t");
    Serial.print(az); Serial.print("\t");
    Serial.print(gx); Serial.print("\t");
    Serial.print(gy); Serial.print("\t");
    Serial.println(gz);
#endif

#ifdef OUTPUT_BINARY_ACCELGYRO
    Serial.write((uint8_t)(ax >> 8)); Serial.write((uint8_t)(ax & 0xFF));
    Serial.write((uint8_t)(ay >> 8)); Serial.write((uint8_t)(ay & 0xFF));
    Serial.write((uint8_t)(az >> 8)); Serial.write((uint8_t)(az & 0xFF));
    Serial.write((uint8_t)(gx >> 8)); Serial.write((uint8_t)(gx & 0xFF));
    Serial.write((uint8_t)(gy >> 8)); Serial.write((uint8_t)(gy & 0xFF));
    Serial.write((uint8_t)(gz >> 8)); Serial.write((uint8_t)(gz & 0xFF));
#endif

Does anyone know where I could get started or have a source code available?

Thanks in advance,

Erwin