Seasonality Adjusted Growth Calculator

How to Use the Calculator – Step-by-Step

1. Enter Current Period Value – The latest data for your metric (e.g., revenue, signups, or traffic). 
2. Enter Same Period Last Year Value – The metric from the same period one year ago to establish the seasonal baseline. 
3. Enter Previous Period Value – The value from the previous month or quarter to calculate raw MoM or QoQ growth. 
4. Click “Calculate” – The calculator computes: 
   • Raw MoM Growth % 
   • Year-over-Year (YoY) Index
     
   • A short interpretation comparing current growth vs. seasonal expectation.

Understanding Results

You’ll see two key outputs:

Industry Benchmarks

Average seasonality strength varies by industry — use this as reference:

Practical Examples

Example:

• Current Period Revenue = ₹13,00,000 
• Same Period Last Year = ₹10,00,000 
• Previous Period Revenue = ₹11,50,000 

Step 1: Raw MoM Growth %
((₹13,00,000 – ₹11,50,000) ÷ ₹11,50,000) × 100 = 13.0%

Step 2: Seasonal Index (YoY Ratio)
₹13,00,000 ÷ ₹10,00,000 = 1.30 (i.e., 30% typical seasonal uplift)

Step 3: Comparison / Interpretation
MoM Growth (13%) is slightly below the 30% seasonal index — meaning performance this month aligns with normal seasonal trends, but not beyond expectations.

Final Output Message:

“Your MoM growth is in line with typical seasonal uplift — current performance reflects expected trends.”

Tips to Improve Seasonally Adjusted Growth

• Benchmark Year-over-Year: Always compare equivalent timeframes across multiple years. 
• De-seasonalise Your Data: Use moving averages to normalise out peaks and troughs. 
• Leverage Off-Season Marketing: Build campaigns during slower periods to smooth revenue across the year. 
• Track Category-Specific Trends: Every industry’s seasonality pattern is unique — maintain custom baselines.
  
• Combine with Rolling or QoQ Calculators: For deeper trend visibility across overlapping periods.