ReturnLab Investment Tools

Calculate how your money changes.
Compare how each assumption changes the outcome.

Start with one set of assumptions.Use the full calculators to compare rates, time periods, and scenarios.

Run a quick calculation

Enter the essentials to see a result right away.Use the full calculators for deeper comparisons.

Compound Calculator

How much could this money grow?

Calculate the ending value from a starting amount, duration, and daily return.
Ending value$12.2K
Compare multiple returns

Monthly Investment Calculator

What could monthly investing grow to?

Calculate the ending balance from a fixed monthly contribution and annual return.
Ending balance$73.62K
Compare multiple returns

Loss Recovery Calculator

How long could recovery take?

Calculate the gain needed after a stock loss and estimate recovery time at a consistent daily return.
Estimated recovery time36 days
Calculate stock loss recovery

Cash Flow Calculator

How much could your principal fund each day?

Calculate daily spending from your principal, timeframe, and annual return.
Daily spending amount over 30 years$156
Explore time and return assumptions

What makes ReturnLab different

Run one calculation, then compare the alternatives.

After a quick answer, compare nearby returns and different time periods on the same screen to see how small changes alter the outcome.
01

Compare returns

Place nearby rates such as 1.0%, 1.1%, and 1.2% side by side.

02

Compare time

Keep the money and return fixed while changing only the duration.

03

Work backward from a goal

Calculate the time or daily return needed to reach a target amount.

Latest insights

Money questions, worked out with numbers

Explore market and everyday money questions through transparent calculations and concrete examples.
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