Math & Time Calculators
Perform precision calculations for academic, professional, and everyday number problems. Instant, responsive, and completely client-side — no server round-trips required.
Available Math & Time Tools (13)
Percentage Calculator
Calculate percentage increases, percentage decreases, proportions, and percentage differences between two numbers for school, business, and financial calculations.
Age Calculator
Find your exact age in years, months, and days from your date of birth and a selected reference date.
Date Difference Calculator
Calculate the exact number of days, weeks, months, and years between two calendar dates for project scheduling and deadlines.
Time Calculator
Add, subtract, and convert time durations in hours, minutes, and seconds for timesheet auditing, project tracking, and media production.
Scientific Calculator
Solve advanced mathematical equations involving trigonometric functions, logarithms, exponents, square roots, and algebraic operations directly in your browser.
Fraction Calculator
Add, subtract, multiply, and divide proper, improper, and mixed fractions with automatic reduction to lowest terms and decimal equivalents.
Average / Mean Calculator
Calculate the arithmetic mean, median, mode, range, and geometric average for any list of numbers separated by commas or spaces.
Square Root Calculator
Calculate square roots, cube roots, and custom nth roots of positive numbers with exact radical simplification and decimal precision.
Random Number Generator
Generate truly pseudo-random numbers within a customizable minimum and maximum range for giveaways, statistical sampling, games, and lotteries.
Number to Words Converter
Convert numeric values into standard English words and formal check-writing currency formats for invoices, legal documents, and banking.
Grade Calculator
Calculate weighted course grades, determine current semester standing, and find the minimum final exam score required to achieve your target letter grade.
GPA Calculator
Calculate high school and college grade point averages across weighted and unweighted scales, supporting AP, IB, and Honors grade point adjustments.
Standard Deviation Calculator
Compute population and sample standard deviation, variance, mean, and sum of squares for any list of dataset values.