Math Calculators

Run common classroom math tools for expressions, matrices, and significant figures.

Calculators

Matrix Calculator
Calculate 2x2 and 3x3 matrix determinants, inverses, products, and reduced row echelon form.
- matrix calculator
- determinant calculator
- inverse matrix calculator
Percentage Decrease Calculator
Find the percentage decrease between two numbers, reduce a value by a percentage, or recover the original value before a decrease, with each calculation written out.
- percentage decrease calculator
- percent decrease
- percentage reduction
- percent change
- decrease by percentage
- percentage
Pythagorean Theorem Calculator
Solve a squared plus b squared equals c squared for any side of a right triangle, with the area, perimeter, and angles included.
- pythagorean theorem calculator
- hypotenuse calculator
- right triangle calculator
- a2 b2 c2
- missing side of a right triangle
- geometry
Scientific Calculator
A free online scientific calculator for trigonometry, logarithms, powers, roots, factorials, combinations, and constants, with selectable degree, radian, and gradian angle modes, memory keys, and a calculation history.
- scientific calculator
- online scientific calculator
- math calculator
- trigonometry calculator
- logarithm calculator
- factorial calculator
Sig Fig Calculator
Count significant figures, highlight which digits count, and round numbers to a chosen number of significant figures.
- sig fig calculator
- significant figures calculator
- sig fig counter
- significant digits
- round to significant figures
- rounding calculator