School

School tools

The night before it is due: what grade you actually need on the final, whether that lab answer is rounded correctly, what GPA a semester of grades adds up to. Built around the assignment in front of you, not a general-purpose formula page.

GPA calculator (US 4.0 scale)Weighted and unweighted, AP/IB honors weighting, your actual courses and credits→ International GPA calculatorTen education systems - UK classifications, Australian 7-point, Indian CGPA, the inverted German scale and more→ Grade & final grade calculatorYour current weighted grade - and what you need on the final→ Fraction calculatorExact fraction arithmetic, fully reduced, working shown→ Significant figures calculatorCount sig figs, or round correctly - even on tricky cases like 9.995→ Scientific notation / standard form converterStandard number to scientific notation, without dropping trailing zeros→ Molarity & dilution calculatorWhat concentration did I make - or how do I dilute it?→ Ohm’s Law calculatorEnter any two of V, I, R, or P - get the other two→ Quadratic formula solverReal, repeated, or complex roots - with the actual parabola drawn→ Standard deviation calculatorPopulation or sample, with the actual spread drawn on a number line→