Free Online Calculators
Quick, accurate calculators for money, math and everyday life. No sign-up, no clutter — just answers.
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Percentage Calculator
Six quick percentage tools with live answers and the working shown.
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Compound Interest Calculator
See how savings grow with interest and monthly contributions, in any of 5 currencies.
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Grade Calculator
Weighted course grades, the score you need on your final, and exam scores to letter grades.
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Scientific Calculator
Trig, logs, powers, roots and factorials with live answers and full keyboard support.
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Fraction Calculator
Add, subtract, multiply and divide up to 5 fractions, mixed and whole numbers, with every step and the order of operations.
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Age Calculator
Exact age in years, months and days, the next birthday, a baby’s age in weeks, or a birth date from an age.
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Finance
Savings, investing and borrowing
Math
Everyday number crunching
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Percentage Calculator
Find percentages, percentage change and differences.
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Grade Calculator
Work out weighted course grades, the score you need on your final and letter grades.
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High School GPA Calculator
Weighted and unweighted GPA with Honors, AP, IB and Dual Enrollment classes.
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Scientific Calculator
Trig, logs, powers, roots, factorials and memory, with live answers.
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Simplify Fraction Calculator
Reduce fractions and mixed numbers to lowest terms, with the steps.
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Mixed Number Calculator
Add, subtract, multiply and divide mixed numbers, or convert them.
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Decimal to Fraction Calculator
Convert decimals, repeating decimals and percents to fractions.
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Fraction Calculator
Add, subtract, multiply and simplify fractions.
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Average Calculator
Calculate the mean, median and mode of a list of numbers.
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Everyday
Dates, time and life admin
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Age Calculator
Find your exact age in years, months and days.
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Date Calculator
Count the days between dates or add days to a date.
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Hours Calculator
Work hours between two times, a weekly timesheet with overtime, and adding up hours.
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Batting Average Calculator
Cricket average and strike rate, or baseball average, OBP, SLG and OPS.
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Business
Pricing, profit and returns
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