Growth Rate Calculator

Calculate CAGR, MoM, YoY, and simple growth rates

Understanding Growth Rates

Growth rates measure how quickly your business metrics are changing over time. Different calculation methods are appropriate for different situations and time periods.

Types of Growth Rates

Simple Growth Rate

Growth Rate = ((Ending Value - Starting Value) / Starting Value) × 100

When to use: Measuring total growth over any single period. Simple to understand and communicate.

Example: Revenue grew from $100K to $150K = 50% growth

Compound Annual Growth Rate (CAGR)

CAGR = ((Ending Value / Starting Value)^(1/Years) - 1) × 100

When to use: Measuring average annual growth over multiple years. Smooths out volatility.

Example: $100K to $150K over 3 years = 14.47% CAGR

Month-over-Month (MoM)

MoM = ((Ending Value / Starting Value)^(1/Months) - 1) × 100

When to use: Tracking short-term momentum and recent trends. Common for startups.

Example: Growing 10% MoM compounds to 214% annual growth

Year-over-Year (YoY)

YoY = ((This Year - Last Year) / Last Year) × 100

When to use: Comparing same period across years. Accounts for seasonality.

Example: Q4 2024 revenue vs Q4 2023 revenue

Why Growth Rates Matter

Investor Expectations

Stage	Expected Annual Growth	MoM Equivalent
Early Stage (Pre-Seed/Seed)	300-500%+	12-15%+
Growth Stage (Series A/B)	100-300%	6-12%
Late Stage (Series C+)	50-100%	3-6%
Mature (Public)	10-30%	0.8-2.2%

The Rule of 40

For SaaS companies, the sum of growth rate and profit margin should exceed 40%:

40% growth + 0% profit: Acceptable (growth mode)
20% growth + 20% profit: Balanced
10% growth + 30% profit: Cash cow

Interpreting Different Growth Rates

When CAGR vs Simple Growth Differ Significantly

Large differences indicate volatility or non-linear growth:

Example 1: Steady Growth

$100K → $150K → $225K → $338K over 3 years

Simple growth: 238%
CAGR: 50% (consistent)

Example 2: Volatile Growth

$100K → $300K → $250K → $338K over 3 years

Simple growth: 238% (same end result)
CAGR: 50% (masks volatility)

MoM Growth Rates

High MoM growth compounds dramatically:

MoM Growth	Annual Growth	10× in
5%	80%	48 months
10%	214%	25 months
15%	435%	16 months
20%	791%	13 months

Growth Strategy Implications

High Growth (>100% annual)

Focus: Land grab, market share
Priorities: Sales, marketing, hiring
Metrics: MoM growth, user acquisition
Risk: Burning capital, unit economics

Moderate Growth (30-100% annual)

Focus: Sustainable scaling
Priorities: Efficiency, profitability
Metrics: LTV:CAC, payback period
Risk: Competitive pressure

Slow Growth (<30% annual)

Focus: Optimization, profitability
Priorities: Margins, cash flow
Metrics: EBITDA, cash generation
Risk: Market saturation, disruption

Common Pitfalls

Vanity Metrics

High growth rates are meaningless without context:

Growing from $1K to $10K = 900% growth (but still tiny)
100% growth with negative margins = unprofitable
High churn negating growth = treadmill

Comparing Different Time Periods

Always specify the time frame:

20% YoY ≠ 20% MoM ≠ 20% QoQ
Use consistent measurement periods
Distinguish between simple and compound growth

Using Growth Rates for Forecasting

Linear Projection

Simple but often inaccurate for growing businesses:

Future Value = Current Value + (Growth × Periods)

Compound Projection

More accurate for sustained growth:

Future Value = Current Value × (1 + Growth Rate)^Periods

Conservative Approach

Account for growth rate deceleration:

Assume growth rate decreases as you scale
Use tiered growth rates (50% → 30% → 20%)
Model multiple scenarios (best/base/worst)

Quick Reference

Rule of 72:

Time to double = 72 / growth rate

10% growth: 7.2 years
20% growth: 3.6 years
50% growth: 1.4 years

10× Growth:

25% CAGR: 9.6 years
50% CAGR: 5.0 years
100% CAGR: 3.3 years

Industry Benchmarks

SaaS: 20-40% annual
E-commerce: 15-30% annual
Marketplaces: 50-100% early
Consumer Apps: 100%+ early
Enterprise: 30-50% annual