Average Return Calculator
Calculate exact age in years, months, days, hours, and minutes.
Calculation Method
Return Data
Enter periodic returns as percentages, separated by commas
Return Calculation Methods
Calculation: Arithmetic Mean Return
Arithmetic Mean Return
Simple average return
Total Return
Overall performance
Annualized Return
Per year
Volatility (σ)
Standard deviation
Sharpe Ratio
Risk-adjusted return
Compounded Value
From $10,000.00 initial
How it works
Average return summarizes an investment's performance over several periods. The simple (arithmetic) average just averages the yearly returns, but the geometric average (CAGR) accounts for compounding and is the honest measure of growth over time — it's always less than or equal to the arithmetic mean when returns vary.
Arithmetic vs geometric (CAGR)
Arithmetic = (r₁ + r₂ + …) ÷ n CAGR = (ending ÷ beginning)^(1/years) − 1
- ending, beginning
- final and starting values
- years
- holding period
Worked example
- $10,000 grows to $16,000
- Over 5 years
- CAGR = (16,000 ÷ 10,000)^(1/5) − 1
- = 1.6^0.2 − 1
CAGR ≈ 9.86% per year.
Good to know
- Use CAGR, not the simple average, to compare investments — volatility makes the arithmetic mean overstate real growth.
- A +50% then −50% pair averages 0% arithmetically but is actually a −25% loss; CAGR catches that.
- CAGR smooths out the bumps and assumes steady compounding.
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Frequently Asked Questions
How does the calculator handle leap years?
Our calculator automatically accounts for leap years and varying month lengths, ensuring precise age calculations down to the day.
Can I calculate my age on a specific future date?
Yes, enter any target date to see your exact age on that date. Useful for planning milestones, retirement, or meeting age requirements.
Why might age calculations vary between sources?
Different systems may handle time zones, leap years, or calculation methods differently. Our calculator uses precise date arithmetic for accuracy.
How can I be more productive?
Use tools that fit your workflow, automate repetitive tasks, minimize distractions, and review processes regularly.
What if results seem wrong?
Double-check inputs, verify units match, ensure using correct tool, and consult documentation if needed.
Can I save my calculations?
Most calculators allow copying results. Consider keeping a spreadsheet or document for important calculations.
How accurate are these tools?
Calculators use standard formulas and algorithms. Accuracy depends on input precision and appropriate tool selection.