Finance & Loan
Mortgages, loans, interest, tax and everyday money maths.
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Work out a mortgage, a BMI, a due date, zakat owed, a molar mass or a final grade — seventy tools across seven categories, all free and all instant.
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Seven themed collections, each with its own colour. Jump straight to a tool, or open the category to see them all.
Health & Fitness
Body composition, energy needs and daily wellbeing numbers.
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Women's Health
Cycle, fertility and pregnancy dates worked out clearly.
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Zakat & Islamic Finance
Work out zakat due on money, gold, silver, trade goods and crops.
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Math & Science
Geometry, algebra, physics and chemistry, solved step by step.
18 calculators
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Date & Time
Ages, date spans and Hijri/Gregorian conversion.
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Grade & GPA
Grades, GPA, CGPA and percentage conversions for students.
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Featured calculators
The tools people reach for most often, across every category.
Mortgage Calculator
Monthly payment, total interest and a full amortisation schedule.
BMI Calculator
Body mass index for adults, in metric or imperial units.
GPA Calculator
Grade point average from course credits and letter grades.
Pregnancy Due Date Calculator
Estimated delivery date from your last period or ultrasound.
Money Zakat Calculator
Zakat due on cash, bank balances and receivables.
Percentage Calculator
Percent of a number, increase, decrease and difference.
Most popular tools
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