Year-over-Year Growth Calculator
Use this tool to calculate absolute change, year-over-year (YoY) growth rate, and optional CAGR if your values span multiple years.
What is year-over-year growth?
Year-over-year growth compares a metric from one period to the same period in the prior year. It is one of the most practical ways to measure progress because it removes much of the seasonality that can distort month-to-month results.
Businesses use year-over-year analysis for revenue, profit, users, website traffic, and conversion rates. Individuals use it for salary growth, savings, net worth, and investment performance.
The formula behind the calculator
The core year-over-year growth formula is:
YoY Growth (%) = ((Current Value - Previous Value) / Previous Value) × 100
This page also calculates:
- Absolute Change:
Current Value - Previous Value - CAGR (if years > 1 and values are positive):
((Current / Previous)^(1 / Years) - 1) × 100
How to use this year-over-year growth calculator
Step 1: Enter the previous year value
This is your baseline value. It could be last year’s revenue, prior-year monthly sales, or your net worth one year ago.
Step 2: Enter the current year value
Input the most recent value you want to compare against the baseline.
Step 3: Enter years between values
Keep this at 1 for standard YoY growth. If your data spans multiple years (for example, 2022 to 2026), enter the number of years so the calculator can estimate annualized growth (CAGR).
Step 4: Click calculate
You’ll get:
- Absolute dollar/unit change
- YoY percentage growth
- Growth multiple (e.g., 1.25×)
- CAGR (when applicable)
Example calculations
Example 1: Revenue growth
Previous year revenue: 1,200,000
Current year revenue: 1,500,000
Absolute change = 300,000
YoY growth = 25%
Example 2: User decline
Previous year users: 80,000
Current year users: 72,000
Absolute change = -8,000
YoY growth = -10%
Example 3: Multi-year growth with CAGR
Previous value: 50,000
Current value: 85,000
Years: 3
Total growth over period = 70%
CAGR ≈ 19.4% per year
How to interpret your result
- Positive YoY %: Growth vs last year.
- Zero YoY %: Flat performance.
- Negative YoY %: Decline vs last year.
Always pair percentage growth with the absolute change. A 50% increase sounds huge, but context matters: growth from 2 to 3 is very different from growth from 2 million to 3 million.
Common mistakes to avoid
- Comparing mismatched periods: Compare Jan this year to Jan last year, not Jan to Dec.
- Ignoring base effects: A small starting number can make growth rates look inflated.
- Using only percentages: Always inspect underlying values and trend direction.
- Assuming linear growth: YoY growth is a snapshot, not a guarantee of future performance.
YoY vs QoQ vs CAGR
Year-over-year (YoY)
Best for removing seasonality and understanding annual progress.
Quarter-over-quarter (QoQ)
Best for short-term trend tracking, but can be volatile.
Compound annual growth rate (CAGR)
Best for smoothing multi-year performance into an annualized rate.
When this calculator is useful
- Business revenue and margin tracking
- E-commerce order and conversion trends
- Personal income growth analysis
- Net worth and investment progress reviews
- SaaS metrics like MRR, ARR, and churn-adjusted growth
Final thoughts
A strong year-over-year growth calculator should do more than output a single percentage. It should help you understand change in absolute terms, relative terms, and—when needed—annualized terms. Use the tool above regularly to make better budgeting, forecasting, and goal-setting decisions.