Math & Academic Calculators
Calculate percentages, percentage change, GPA, and time between calendar dates.
Percentage Calculator
Calculate percentages, percentage increase/decrease, percentage difference, and reverse percentages.
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GPA Calculator
Calculate semester and cumulative GPA with standard 4.0 or custom grading scales.
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Date Calculator
Calculate exact days between dates, add/subtract days, and calculate business days (Mon-Fri).
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