NumLuma›Calculators›Investment & Growth Calculators

Model growth over time

Investment & Growth Calculators

Growth math is easiest to understand by changing one variable at a time: starting value, rate, contribution and time. This collection groups the core tools used to compare long-term scenarios without treating projections as guarantees.

NumLuma Journey

A useful order, not just a list.

Start with the first question, then move through the connected calculations. You can jump in anywhere, but the sequence keeps the task coherent.

Step 1 of 6

01 Start here Compound Interest

Project compound growth.

02 Next calculation Savings Growth

Project savings with monthly contributions.

03 Next calculation CAGR

Find compound annual growth rate.

04 Next calculation Future Value

Project a lump sum into the future.

05 Next calculation Present Value

Discount a future amount to present value.

06 Next calculation Doubling Time

Estimate years needed to double.

Start calculating

Everything you need for this job.

Each tool is free, works without an account and links to its formula, assumptions and related calculators.

Browse all calculators →

MN Money

Compound Interest Calculator

Project compound growth.

NL / MN Open

MN Money

Savings Growth Calculator

Project savings with monthly contributions.

NL / MN Open

MN Money

CAGR Calculator

Find compound annual growth rate.

NL / MN Open

MN Money

Future Value Calculator

Project a lump sum into the future.

NL / MN Open

MN Money

Present Value Calculator

Discount a future amount to present value.

NL / MN Open

MN Money

Doubling Time Calculator

Estimate years needed to double.

NL / MN Open

MN Money

Savings Goal Calculator

Plan monthly savings toward a goal.

NL / MN Open

MN Money

Emergency Fund Calculator

Estimate an expense-based emergency fund target.

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MN Money

Simple Interest Calculator

Calculate simple interest.

NL / MN Open

Before you calculate

Useful context, not filler.

NumLuma groups tools around real tasks so you can move from one calculation to the next without starting your research over.

What is the difference between CAGR and compound interest?

Compound-interest calculators project growth from an assumed rate, while CAGR summarizes the annualized rate that links a starting value to an ending value over a period.

Should I treat a projected return as guaranteed?

No. These tools model mathematical scenarios. Real returns, fees, taxes, inflation and changing rates can produce different outcomes.