Math & Calculation Tools
Scientific calculator, percentage calculator, grade calculator, and unit converter โ all free, all in one place.
Scientific Calculator
Basic arithmetic plus trigonometry, logarithms, powers, and roots.
0
Percentage Calculator
Three common percentage calculations, updated live as you type.
What is X% of Y?
Example: 20% of 150
What is % of ?
= 30
X is what percent of Y?
Example: 30 is what % of 150
is what % of ?
= 20%
Percentage increase / decrease
From X to Y
From to
= 20% increase
Grade Calculator
Add each assignment's score and weight to calculate your overall grade.
| Assignment | Score (%) | Weight (%) |
|---|
0%
Overall Grade
โ
Letter Grade
Unit Converter
Convert between units of length, weight, temperature, volume, speed, and area.