Months ↔ Weeks Converter

Convert between months and weeks instantly

Months

Enter months to convert to weeks

Weeks

Enter weeks to convert to months

📝 Note: Calculations use the average month length of 30.44 days (365.25 days ÷ 12 months). Actual months vary in length from 28 to 31 days.

Conversion Result

3 months ≈ 13.04 weeks

91.31 days • 13 weeks 0.25 days • 13.04 weeks

📚 Months ↔ Weeks Conversion Details

Months to Weeks Formula

weeks = months × 4.34524

To convert months to weeks, multiply months by 4.34524 (average weeks in a month).

Weeks to Months Formula

months = weeks ÷ 4.34524

To convert weeks to months, divide weeks by 4.34524 (average weeks in a month).

Bidirectional Conversion

This converter works both ways simultaneously:

Type in months → weeks updates automatically
Type in weeks → months updates automatically
No buttons to click - works as you type

Common Uses

Pregnancy tracking (often measured in weeks)
Project planning and deadlines
Financial planning (monthly to weekly budgets)
Fitness and health goals

📏 How This Converter Works

This is a bidirectional converter that works in real-time:

Months → Weeks: When you type in the months field, the weeks field automatically updates
Weeks → Months: When you type in the weeks field, the months field automatically updates
No swapping needed: Both conversions happen simultaneously
Real-time: Updates happen as you type, no button clicks required

// Bidirectional Conversion Logic:
weeks = months × 4.34524
months = weeks ÷ 4.34524

// Example 1: Type "3" in months
weeks = 3 × 4.34524 = 13.0357

// Example 2: Type "26" in weeks
months = 26 ÷ 4.34524 = 5.983

💡 Important: The conversion uses 4.34524 weeks per month as the average, calculated from 365.25 days per year ÷ 12 months ÷ 7 days per week. This accounts for leap years and provides the most accurate average conversion.

📊 Conversion Table

Months	Weeks (approx.)	Days (approx.)
1 month	4.35 weeks	30.44 days
2 months	8.69 weeks	60.88 days
3 months	13.04 weeks	91.31 days
6 months	26.07 weeks	182.63 days
9 months	39.11 weeks	273.94 days
12 months	52.14 weeks	365.25 days

❓ Frequently Asked Questions

Q: How many weeks are in a month?

A: On average, there are approximately 4.345 weeks in a month. This accounts for varying month lengths and leap years.

Q: Why is the conversion approximate?

A: Months vary in length (28, 29, 30, or 31 days), so we use the average month length of 30.44 days for accurate long-term calculations.

Q: How does the bidirectional conversion work?

A: Both input fields work simultaneously. When you change the months value, weeks updates automatically. When you change the weeks value, months updates automatically.

Q: Do I need to click any button to convert?

A: No! The conversion happens automatically as you type in either field.

Q: How accurate is this converter?

A: This converter uses the scientifically accurate average of 4.34524 weeks per month, making it suitable for most planning and calculation purposes.