Fetal Weight Calculator

Tool Introduction

This tool is an online fetal weight calculator designed to help pregnant women and doctors estimate fetal weight based on obstetric ultrasound data. It supports various commonly used fetal weight estimation formulas, including the Standard Formula (Chinese Obstetrics Guidelines), Hadlock Formula (four and three parameters), Shepard Formula, Warsof Formula, and Obstetric Quick Formula. Users only need to enter the corresponding ultrasound data to quickly obtain an estimated fetal weight.

How to Use

1. Select the tab corresponding to the calculation formula you want to use (e.g., Standard Formula (Chinese Obstetrics Guidelines)).
2. Enter the data from your ultrasound examination report into the corresponding input fields. Different formulas require different parameters; please fill them in accurately according to the prompts.
3. Click the calculate button, and the tool will automatically calculate and display the estimated fetal weight.

Input Parameter Format and Requirements:

• Biparietal Diameter (cm): The diameter of the widest part of the fetal head, must be a number.
• Abdominal Circumference (cm): The length around the fetal abdomen, must be a number.
• Femur Length (cm): The length of the fetal thigh bone, must be a number.
• Head Circumference (cm): The length around the fetal head, must be a number.

All parameters are in centimeters and must be numbers. Some formulas may only require a subset of parameters; please enter according to the requirements of the selected formula.

Output Result Format:

The calculation result is displayed in a list format, including the estimated fetal weight, in grams.

Usage Example

Example: Calculating Fetal Weight using the Standard Formula (Chinese Obstetrics Guidelines)

• Input Data:
  • Biparietal Diameter: 9.5 cm
  • Abdominal Circumference: 36.5 cm
  • Femur Length: 7.6 cm
• Expected Output Result:
  • Fetal Weight (Estimated): Approximately 3000 grams (specific value subject to calculation results)
• Operation Demonstration:
  1. Click the "Standard Formula (Chinese Obstetrics Guidelines)" tab.
  2. Enter 9.5 in the "Biparietal Diameter" input field.
  3. Enter 36.5 in the "Abdominal Circumference" input field.
  4. Enter 7.6 in the "Femur Length" input field.
  5. Click the "Calculate" button. (The actual tool requires a calculate button)
  6. View the calculation result.

Frequently Asked Questions

• Q: What input formats are supported?
• A: Only numerical format is supported, with units in centimeters.
• Q: What is the format of the output result?
• A: The output result is the estimated fetal weight, displayed in a list format, with units in grams.
• Q: Are there any usage restrictions?
• A: The calculation results are only estimates and cannot be used as a basis for diagnosis. Please consult a professional doctor. Different formulas are applicable to different gestational weeks; please choose according to your actual situation.

Notes

• Please ensure the accuracy of the input data to avoid calculation errors due to incorrect data.
• The applicability of different formulas may vary; please choose the appropriate formula based on your gestational week and your doctor's advice.
• This tool only provides estimated values and cannot replace professional obstetric examinations and diagnoses.
• Calculation results may have errors; please consult a doctor for a professional assessment.