Math and school calculators

Your GPA on the 4.0 scale from letter grades and credits, with your new cumulative GPA.

High school GPA with honors and AP bonus points, shown next to your unweighted GPA.

The score you need on your final exam to get the class grade you want.

Your class grade as a percent and letter from weighted categories or total points.

Add, subtract, multiply and divide fractions and mixed numbers, with the steps and the answer in lowest terms.

Sample and population standard deviation, variance, mean, median and mode from a list of numbers.

90%, 95% and 99% confidence intervals for a mean or a proportion, plus the sample size you need.

Multiply, add, invert and find the determinant of 2×2, 3×3 and 4×4 matrices with exact fractions.

Solve ax² + bx + c = 0 with exact roots, the discriminant, vertex and factored form.

sin, cos, tan and their inverses in degrees or radians, with exact values for special angles.

Logarithms in base 10, e, 2 or any base, and powers (antilog), with change of base steps.

Break a number into prime factors, list every factor, and check whether it is prime.

nCr, nPr and factorials with exact answers, including choices with repetition.

Greatest common factor and least common multiple of 2 to 10 numbers, with the steps.

Find the hypotenuse or a missing leg of a right triangle, plus its angles, area and perimeter.

Convert length, weight, temperature, volume, area, speed, pressure, data and time in one place.

Convert inches, feet, yards and miles to centimeters, meters and kilometers, and back.

Convert pounds, ounces, stone and tons to kilograms and grams, and back.

Convert Fahrenheit to Celsius and Kelvin, with the formula and an oven temperature chart.

Convert cups, tablespoons, teaspoons, fluid ounces and gallons to mL and liters.

Convert square feet, acres, square miles and square meters, plus hectares.

Convert mph to km/h, meters per second, feet per second and knots.

Convert psi to bar, atm, kPa, mmHg and inches of mercury.

Convert bytes, KB, MB, GB and TB using 1,000 or 1,024, plus KiB, MiB and GiB.

Convert seconds, minutes, hours, days, weeks, months and years.

Find density, mass or volume in g/cm³ or lb/ft³, and compare with common materials.

Find molarity, the grams of solute you need, or a dilution with M1V1 = M2V2.

Enter any two of voltage, current, resistance and power to get the other two.