Math Calculators
Solve percentage problems, simplify fractions, calculate GPA, compute scientific expressions, and analyze datasets.
Percentage Calculator
Calculate percentage of a number, percentage increase/decrease, and relative ratios.
Age Calculator
Determine exact age in years, months, days, hours, and find upcoming birthdays.
Scientific Calculator
Evaluate trigonometric, logarithmic, exponential, and algebraic expressions.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step simplification.
GPA Calculator
Calculate cumulative and semester Grade Point Average on 4.0 or weighted scales.
Percentage Change Calculator
Calculate relative percent increase, decrease, and absolute variance between numbers.
Date / Days-Between Calculator
Count exact calendar days, business weekdays, and weeks elapsed between two dates.
Time / Hours Calculator
Add, subtract, and track clock hours, minutes, and work timesheet durations.
Random Number Generator
Generate cryptographically random integers and lottery picks within custom min/max ranges.
Standard Deviation Calculator
Compute sample and population standard deviation, variance, and mean for any dataset.
Grade / Test Calculator
Calculate test scores, letter grade equivalents, and score required on final exams.