35 Free Calculators — No Signup Required
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Finance, health, education — all the calculators you need in one place. Fast, accurate, and always free.
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Finance
Compound Interest Calculator
See how your money grows over time
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Loan Calculator
Monthly payments and total interest
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Mortgage Calculator
Home loan payments and amortization
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Debt Payoff Calculator
Snowball or avalanche strategy
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Salary to Hourly Calculator
Convert annual salary to hourly rate
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Savings Calculator
Monthly plan to reach a savings goal
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Retirement Calculator
Monthly saving needed for your nest egg
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Paycheck Calculator
Estimate US take-home pay after taxes
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Inflation Calculator
Compare purchasing power across years
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Net Worth Calculator
Assets minus liabilities with categories
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Freelance Rate Calculator
Find a sustainable hourly freelance rate
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Rent vs Buy Calculator
Compare the cost of renting versus buying
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Cost of Living Calculator
Compare salary needs between US cities
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Tax Calculator
Estimate 2024 US federal income tax
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Sales Tax Calculator
Price plus state sales tax by state
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Currency Converter
Static exchange rates for major currencies
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Health
BMI Calculator
Body Mass Index with health ranges
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Calorie Calculator
Daily calorie needs by activity level
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Body Fat Calculator
Estimate body fat with the US Navy method
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BAC Calculator
Estimate blood alcohol content by drinks and time
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Math & Everyday
Tip Calculator
Split bills and calculate tips easily
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Age Calculator
Exact age in years, months and days
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GPA Calculator
Calculate your grade point average
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Sleep Calculator
Ideal times to sleep and wake by cycles
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Hours Calculator
Weekly hours total and pay estimate
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Overtime Calculator
US overtime pay with 1.5x and 2x rules
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Percentage Calculator
Percent of, what percent, and % change
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Discount Calculator
Sale price and savings from a discount
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Unit Converter
Weight, length, temperature, and volume
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Date Calculator
Difference between dates and add/subtract days
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Random Number Generator
Generate single or multiple random values
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Word Counter
Words, characters, reading time, and top words
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Grade Calculator
Weighted final grade across assessments
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Free Online Calculators — DolarCalc
DolarCalc provides free, accurate online calculators for personal finance, health, math, and everyday calculations. Whether you need to calculate compound interest on your savings, compare rent versus buy, estimate take-home pay, determine body fat, convert currencies, or generate lucky lottery numbers — we have the tools you need.
All calculators are completely free to use with no registration required. Results are calculated instantly in your browser with no data sent to our servers. Bookmark this page to access all your favorite calculators anytime.