...calculate anything, anytime, anywhere.
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Standard Calculator
Use this standard tape calculator for everyday arithmetic with a running calculation tape.
What's New
Project what your current college savings plan may cover and estimate any funding gap.
Calculate the monthly or annual contribution needed to meet a college savings goal.
Calculate the exam score needed for a target grade or project a final course grade.
Project a final course grade from the current grade, final exam weight, and expected exam score.
Calculate semester and cumulative GPA from letter or numeric grades and course credits.
Calculate an overall course grade using points or weighted categories.
Calculate the score needed on a final exam to reach a desired course grade.
Estimate student-loan payments, total interest, payoff timing, or an affordable loan amount.
This calculator allows you to calculate how many tiles you need to cover a simple rectangular area. Works both in metric and imperial units. Works for both rectangular and square tiles.
Convert colors between Hex, RGB, HSL, HSV, and CMYK, and view complementary and inverted colors.