Financial Calculators
Free professional calculators built for serious investors. From DCF intrinsic value to compound interest growth and equity dilution. Institutional methodology, mobile-first design, no signup.
DCF Calculator
Calculate intrinsic value using a two-stage discounted cash flow model. Includes sensitivity analysis, reverse DCF, and margin of safety.
Compound Interest Calculator
See how investments grow over time. Real-world return presets, inflation adjustment, and the cost-of-waiting insight.
Equity Dilution Calculator
Model funding round dilution, option pool top-ups, and cap table impact. Built for founders, employees, and angel investors.
Historical Return Calculator
What would a $10,000 investment in any stock years ago be worth today? Coverage across 8,000+ tickers and 15+ global exchanges.
Dollar Cost Averaging Calculator
Model recurring investments into any ticker over time. See average cost, total return, and what DCA would have produced for any stock.
Intrinsic Value Calculator
Multi-model valuation combining Graham, DCF, EV/EBITDA, and P/E approaches. Pre-populated with live financial data.
Retirement Calculator
Project your retirement nest egg with inflation, tax brackets, and withdrawal strategy modeling.
NPV Calculator
Net present value of any cash flow stream. For project evaluation and capital budgeting decisions.
Why WallStSmart Calculators
Most financial calculators on the web are either too generic or hidden behind email walls. WallStSmart calculators are different. Built for people who actually invest, with the methodology professionals use and the polish a modern web tool deserves.
Institutional methodology
Two-stage DCF, compound simulation at chosen frequencies, sensitivity analysis. The math professionals use.
Real-world presets
HYSA, bonds, S&P 500, real estate, seed and Series A rounds. One-click setup for the scenarios you actually care about.
Mobile-first design
Every calculator works cleanly on a phone. Inputs collapse, tables scroll, charts resize. No friction.
Privacy by default
All calculations run in your browser. Nothing is stored, logged, or sent anywhere. Your numbers stay yours.
Built for Serious Investors
These calculators are part of WallStSmart, a stock analysis platform covering 8,000+ tickers across 15+ global exchanges. The same financial data, valuation models, and analytical rigor that power the stock pages also feed into the calculators here. When the ticker-aware versions ship, you will be able to run a DCF on any stock pre-populated with its latest financials, or see exactly what a 10,000 dollar investment in NVDA, AAPL, or any other ticker would be worth today.
Until then, the general-purpose versions give you the same models with full control over inputs. Use the DCF Calculator to value any company. Use the Compound Interest Calculator to plan savings. Use the Equity Dilution Calculator to model funding rounds and option pool refreshes. More calculators are on the way.
Frequently Asked Questions
What financial calculators does WallStSmart offer?+
WallStSmart currently offers a DCF Calculator for stock valuation, a Compound Interest Calculator for investment growth, and an Equity Dilution Calculator for cap table modeling. Coming soon: a Historical Return Calculator covering 8,000+ tickers, a Dollar Cost Averaging Calculator, a multi-model Intrinsic Value Calculator, a Retirement Calculator, and an NPV Calculator. All calculators are free, mobile-first, and require no signup.
Are these calculators free to use?+
Yes. Every calculator on WallStSmart is completely free. No signup, no paywalls, no ads, no premium tier. The calculators are part of WallStSmart's mission to make institutional-grade investment tools accessible to retail investors.
How accurate are the calculations?+
The calculators use professional, institutional methodologies. The DCF Calculator implements a standard two-stage discounted cash flow model. The Compound Interest Calculator simulates growth month by month at the chosen compounding frequency. The Equity Dilution Calculator uses the standard pre-money option pool structure from venture term sheets. Results are educational and not financial advice. Always verify with your own analysis.
Do you save my inputs or share my data?+
No. All calculations run entirely in your browser. Your inputs, results, and any scenarios you build are never sent to any server, stored, or shared.
Which calculator should I start with?+
If you are valuing a specific stock, start with the DCF Calculator. If you are planning long-term savings or retirement, start with the Compound Interest Calculator. If you are modeling a funding round or stock dilution scenario, start with the Equity Dilution Calculator.
Do these calculators work on mobile?+
Yes. Every WallStSmart calculator is built mobile-first. Inputs collapse cleanly on smaller screens, tables scroll horizontally where needed, and charts resize responsively.
Need a calculator that is not listed?
WallStSmart's calculator suite is expanding. If there is a financial calculation you want a professional, mobile-first tool for, let us know what you need.
Request a calculator