Simple calculators for analytics, finance, and business decisions
Data Calculators helps analysts, students, marketers, business professionals, and spreadsheet users solve common formulas faster. Explore practical tools for percentages, weighted averages, CAGR, ROI, standard deviation, and more.
Featured Calculators
A fresh set of 9 calculators is featured each week so you can discover different tools across the site.
Customer Lifetime Value Calculator
Calculate customer lifetime value using purchase value, purchase frequency, customer lifespan, and profit margin.
Conversion Rate Calculator
Calculate conversion rate using conversions and total visitors, sessions, clicks, or leads.
Roth IRA Calculator
Estimate Roth IRA growth based on age, current balance, annual contributions, and expected return.
HELOC Calculator
Estimate available home equity, maximum HELOC amount, and interest-only payment.
Refinance Calculator
Estimate your new mortgage payment, monthly savings, and break-even point when refinancing.
CAGR Calculator
Calculate compound annual growth rate over time.
Standard Deviation Calculator
Calculate standard deviation for a set of numbers.
Percent Change Calculator
Calculate the percentage increase or decrease between two values.
ROI Calculator
Measure return on investment from gain and cost inputs.
Why use Data Calculators?
Designed to make common formulas easier to use without opening a spreadsheet.
Fast and free
Get answers quickly with simple tools that are free to use and easy to understand.
Built for practical work
Useful for finance, analytics, reporting, Excel workflows, business decisions, and school.
Growing calculator library
New tools will continue to be added so the site becomes more useful over time.
Popular use cases
These calculators are useful across a wide range of work and personal projects.
Finance and investing
Use CAGR, ROI, and percentage calculations to evaluate growth and returns.
Business reporting
Quickly calculate changes, averages, and performance metrics for reporting.
Excel and spreadsheet work
Validate formulas and get fast answers before building them into your spreadsheets.
Statistics and analytics
Use standard deviation and weighted averages to better understand your data.
Start with a calculator
Explore the current calculator collection and find the tool you need.
Browse Calculators