United States — College Board
Free online calculators for SAT Math preparation. Practice algebra, statistics, and geometry with step-by-step solutions.
Ages 16-18 · Multiple dates per year
The digital SAT (Bluebook app) includes a built-in Desmos graphing calculator available for all 44 math questions. There is no separate non-calculator section.
Percentage Calculator
Calculate percentages instantly. Find what percent of a number, percentage change, and percentage difference. Free, fast, no signup.
Fraction Calculator
Add, subtract, multiply, and divide fractions. Simplify fractions and convert to mixed numbers. Free online fraction calculator.
Ratio Calculator
Simplify ratios and find missing values in proportions. Free online ratio calculator with step-by-step results.
Quadratic Formula Calculator
Solve quadratic equations using the quadratic formula. Find roots, discriminant, and vertex. Free online quadratic formula calculator.
Solve For X Calculator
Solve algebraic equations for x. Handles linear, quadratic, polynomial, and simple equations. Free online equation solver.
Slope Calculator
Calculate slope from two points, find slope-intercept and point-slope form. Free online slope calculator with graphing.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, and more for any dataset. Supports population and sample statistics. Free online tool.
Probability Calculator
Calculate probability of events, complements, unions, and intersections. Free online probability calculator for statistics.
Graphing Calculator
Free online graphing calculator. Plot mathematical functions, see graphs, and explore equations visually. No download needed.
If 3x + 7 = 22, what is the value of x?
A store increases the price of a $80 item by 15%. What is the new price?
What are the solutions to x² + 2x - 15 = 0?
What is the slope of the line passing through (2, 3) and (6, 11)?
The mean of a dataset is 72 and the standard deviation is 8. What percentage of data falls between 64 and 80 in a normal distribution?