Latest posts
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Percentage Calculator
Solve 3 essential percentage problems: What is X% of Y, X is what % of Y, and percentage increase/decrease.
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Margin & Markup Calculator
Calculate gross profit margin, markup percentage, revenue, and profit from cost and selling price.
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BMI Calculator (Body Mass Index)
Calculate Body Mass Index for adults in metric (kg/cm) and imperial (lbs/inches) units with visual WHO category gauge.
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BMR Calculator (Mifflin-St Jeor)
Calculate Basal Metabolic Rate and daily maintenance calories using the gold-standard Mifflin-St Jeor equation.
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Age Calculator
Calculate your exact age in years, months, days, total hours, and get a countdown to your next birthday.
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Date Difference Calculator
Calculate the exact number of days, weeks, months, and weekdays between two calendar dates.
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College GPA Calculator
Calculate semester and cumulative Grade Point Average (4.0 scale) with dynamic course rows and credit weights.