๐ Finance & Investment Calculators
Explore 42 free finance & investment calculators on DigiToolkit. Every tool gives instant, accurate results with the formula and a worked example so you understand the maths behind the answer.
Capital Budgeting
View Capital Budgeting โIRR Calculator
IRR is the discount rate that makes NPV = 0 (found numerically)
Open calculator โNPV Calculator
NPV = -initial + sum( CF_t / (1+r)^t )
Open calculator โPayback Period Calculator
Payback = initial investment / annual cash inflow
Open calculator โProfitability Index Calculator
PI = PV of future cash flows / initial investment
Open calculator โXIRR Calculator
IRR is the discount rate that makes NPV = 0 (found numerically)
Open calculator โMutual Funds
View Mutual Funds โELSS Calculator
FV = P x [((1+i)^n - 1) / i] x (1+i), where i = monthly rate, n = months
Open calculator โLumpsum Calculator
FV = P x (1 + r)^t
Open calculator โMutual Fund Calculator
FV = P x [((1+i)^n - 1) / i] x (1+i), where i = monthly rate, n = months
Open calculator โSWP Calculator
Each month: balance = balance x (1 + r/12) - withdrawal
Open calculator โAnnuity
View Annuity โAnnuity Calculator
FV = PMT x ((1+r)^n - 1)/r; PV = PMT x (1-(1+r)^-n)/r
Open calculator โFuture Value of Annuity Calculator
FV = PMT x ((1+r)^n - 1)/r; PV = PMT x (1-(1+r)^-n)/r
Open calculator โPresent Value of Annuity Calculator
FV = PMT x ((1+r)^n - 1)/r; PV = PMT x (1-(1+r)^-n)/r
Open calculator โInterest
View Interest โCompound Interest Calculator
A = P x (1 + r/n)^(n x t); Interest = A - P
Open calculator โInterest Calculator
Simple: P x r x t. Compound: P x (1+r)^t - P
Open calculator โSimple Interest Calculator
SI = P x R x T / 100; Maturity = P + SI
Open calculator โInterest Rates
View Interest Rates โTime Value of Money
View Time Value of Money โBonds
Equity
Forex
Returns
Stocks
Trading
Corporate Finance
General Finance
Personal Finance
Purchasing Power
About finance & investment calculations
DigiToolkit's finance & investment tools make everyday and professional calculations fast and reliable. Each calculator is built around a generally accepted formula, validates your inputs, and explains the result in plain language. Because everything runs in your browser, your data stays private and results appear the moment you type.
Tips for accurate results
- Use consistent units across related fields.
- Check the worked example on each page to confirm your inputs.
- Read the assumptions โ some calculators use standard rates or methods that may differ from your situation.
Finance & Investment calculators โ FAQs
What can I do with the finance & investment calculators?
The Finance & Investment section on DigiToolkit has 42 free calculators. Each one shows its formula, a worked example and instant results.
Are these calculators free?
Yes. Every calculator is free to use with no sign-up, and runs entirely in your browser.
Do I need to install anything?
No. All calculators work directly in your web browser on mobile and desktop.