Math & Calculators
Browse 15 free Math & Calculators tools. All tools run in your browser with zero data collection.
Percentage Calculator
Calculate percentages easily. Find what percent of a number, percentage change, and more.
Age Calculator
Calculate your exact age in years, months, and days from your date of birth.
Scientific Calculator
Advanced calculator with trigonometric, logarithmic, and exponential functions.
Grade Calculator
Calculate weighted grade averages and determine what score you need on your final exam.
Aspect Ratio Calculator
Calculate aspect ratios from dimensions or find missing dimensions based on a ratio.
Loan Calculator
Calculate monthly payments, total interest, and amortization schedule for any loan.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, and other statistics for a data set.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step results.
Roman Numeral Converter
Convert between Arabic numbers and Roman numerals. Supports values from 1 to 3,999.
Quadratic Equation Solver
Solve quadratic equations (ax² + bx + c = 0) and find roots, vertex, and discriminant.
Probability Calculator
Calculate probability for single events, combined events, and permutations/combinations.
GPA Calculator
Calculate your Grade Point Average (GPA) by entering courses, grades, and credit hours.
Dog Age Calculator
Convert your dog's age to human years based on breed size.
Date Calculator
Calculate the number of days between two dates or add/subtract days from a date.
Tip Calculator
Calculate tip amount and split the bill among friends easily.