Latest posts
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Day of the Week Calculator
Enter any date to find which weekday it falls on, plus the day of the year and week number.
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Day Counter
Count the number of days, weeks and months between two dates.
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Date Calculator
Enter two dates to find the number of days between them — plus weeks, months and years.
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Cubic Yards Calculator
Get cubic yards from your dimensions, or convert cubic feet, gallons and cubic meters into cubic yards for ordering bulk materials.
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Cubic Feet Calculator
Enter length, width and height in any units to get the volume in cubic feet — plus cubic yards, cubic meters, gallons and cubic inches.
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Credit Cards Payoff Calculator
See how long minimum payments take to clear a card and the interest they cost.
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Credit Card Payoff Calculator
See how long minimum payments take to clear a balance — and how much interest they really cost.
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Unit Conversion Calculator
Convert between metric and imperial units for length, weight, volume and temperature.
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Confidence Interval Calculator
Find the margin of error and interval for a sample mean at your chosen confidence level.
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Concrete Calculator
Work out how much concrete you need for slabs, footings and columns — in cubic yards, plus 40, 60 and 80 lb bag counts.