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)Weighted and unweighted, your actual courses and credits → International GPA calculatorUS, UK, Australia, India, Canada, Germany and more - on your own country’s scale → 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 →
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