Find the calculator you need.
Free-calc.com offers calculators for loans, mortgages, retirement, net worth, percentages, date math, paint, gravel, and many other everyday tasks.
Calculator categories
Explore the full calculator library by topic.
Finance Calculators
Helpful calculators for mortgages, loans, savings, retirement, debt, taxes, and everyday money decisions.
Health Calculators
Useful calculators for body composition, calorie planning, and wellness estimates.
Math Calculators
Fast tools for percentages, fractions, averages, ratios, scientific math, and date calculations.
Home & DIY Calculators
Project planning calculators for area, concrete, paint, gravel, and home improvement needs.
37 calculator tools
These calculator pages are linked from the homepage to make them easier to find for both visitors and search engines.
Mortgage Calculator
Estimate mortgage payments, amortization, taxes, insurance, and extra-payment savings.
Loan Calculator
Estimate loan payments, compare payoff structures, and build an amortization table.
Auto Loan Calculator
Estimate auto loan payments, payoff timing, and interest savings.
Compound Interest Calculator
Project future value with compound growth and recurring contributions.
Savings Calculator
Estimate savings growth over time with contributions.
Retirement Calculator
Estimate retirement savings growth and income readiness.
Investment Return Calculator
Estimate investment growth and returns over time.
APR Calculator
Estimate annual percentage rate and borrowing costs.
Credit Card Payoff Calculator
Estimate payoff timing and total interest on credit card debt.
Debt Payoff Calculator
Estimate debt payoff timing and repayment cost.
Refinance Calculator
Compare an existing loan against a refinance scenario.
Student Loan Calculator
Estimate student loan payments and total repayment cost.
Down Payment Calculator
Calculate down payment amounts and resulting loan size.
Amortization Calculator
Estimate fixed-rate amortized loan payments and balance reduction.
Salary Calculator
Convert salary across monthly, weekly, daily, and hourly periods.
Sales Tax Calculator
Calculate sales tax amount and final total.
Tip Calculator
Calculate tip, split bills, and total meal cost.
Inflation Calculator
Estimate how purchasing power changes over time and compare current and future values.
Rent vs Buy Calculator
Compare the estimated long-term cost of renting against buying a home.
Net Worth Calculator
Add up assets and liabilities to estimate personal net worth.
Debt Snowball Calculator
Plan a debt snowball payoff strategy and estimate payoff order and timing.
BMI Calculator
Calculate body mass index using height and weight.
Calorie Calculator
Estimate daily calorie needs based on activity and goals.
Body Fat Calculator
Estimate body fat percentage using common measurements.
Age Calculator
Calculate exact age in years, months, days, and total days from a birth date.
Percentage Calculator
Solve percentage increase, decrease, and percentage-of problems.
Fraction Calculator
Add, subtract, multiply, or divide fractions.
Average Calculator
Find the average of a list of numbers.
Ratio Calculator
Simplify and scale ratios.
Unit Converter
Convert common measurement units quickly.
Scientific Calculator
Use advanced math functions including trig, powers, logs, and parentheses.
Probability Calculator
Calculate combinations, permutations, and event probability estimates.
Date Difference Calculator
Calculate the number of days, weeks, months, and years between two dates.
Concrete Calculator
Estimate concrete volume for slabs, footings, and posts.
Square Footage Calculator
Calculate area in square feet for rooms and projects.
Paint Calculator
Estimate paint needed based on room dimensions, coats, and paint coverage.
Gravel Calculator
Estimate gravel volume, cubic yards, and tons for paths, driveways, and beds.
Free online calculators for everyday decisions
Use free-calc.com to estimate payments, compare options, solve math problems, check dates, and plan projects. The site is designed to make common calculations easier to understand and faster to use.