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All available calculators, by category:

• Simple Math Operations
• Money Calculations
• Time, Dates and Years

• Simple Math Operations

  • 1. Write Numbers in Words

    • Numbers to Words, Converter, in English: Write Numbers in Word Form
    • Write Ordinal Numbers in Words, in English, Converter

  • 2. Roman Numerals Converters and Calculator

    • Numbers to Roman Numerals Converter
    • Roman Numerals Converter to Hindu Arabic Numbers
    • Roman Numerals Addition and Subtraction Calculator

  • 3. Binary and Decimal Numbers Converters

    • Unsigned Base 10 Decimal System Numbers to Binary
    • Base 10 Numbers to Signed Binary in Base 2
    • Decimal to Signed Binary in One's (1's) Complement Representation
    • Decimal to Signed Binary in Two's (2's) Complement Representation
    • Decimal to 32 Bit Single Precision IEEE 754 Binary Floating Point Representation Standard
    • Decimal to 64 Bit Double Precision IEEE 754 Binary Floating Point Representation Standard
    • Unsigned Base 2 Binary Numbers - To Base 10 Decimal System
    • Base 2 Signed Binary Numbers - To Base 10 Decimal System
    • Signed Binary in One's (1's) Complement Representation to Decimal
    • Signed Binary in Two's (2's) Complement Representation to Decimal Converter
    • 32 Bit Single Precision IEEE 754 Binary Floating Point Representation Standard to Decimal
    • 64 Bit Double Precision IEEE 754 Binary Floating Point Representation Standard to Decimal

  • 4. Simple Arithmetic

    • Rounding off Numbers to Whole or Decimal Places
    • Adding Numbers: Calculate the Sum. Learn To Add
    • Subtracting Numbers: Calculate the Difference. Learn To Subtract

  • 5. Prime Numbers

    • Prime Factorization Calculator: Decompose Numbers Into Prime Factors
    • Calculator of the Greatest (Highest) Common Factor (Divisor)
    • Calculator of LCM, the Least Common Multiple
    • Simplify (Reduce) Fractions to the Lowest Terms
    • Numbers' Divisibility Calculator: Is a Number Divisible by Another?
    • Calculator of the (Common) Factors of One or Two Numbers
    • Check if Two Numbers are Relatively Prime (Coprime, Prime to Each Other)
    • Numbers' Parity Calculator: Is the Number Even or Odd?

  • 6. Fractions Operations

    • Reduce Common Fractions, Simplify Them to the Lowest Terms
    • Compare Common Fractions, Sort Them in Ascending Order
    • Sort Multiple Common Fractions in Ascending Order
    • Adding Common (Ordinary) Fractions
    • Subtracting Common (Ordinary) Fractions
    • Multiplying Common (Ordinary) Fractions
    • Convert numbers into fractions, mixed numbers and percentages. Equivalent fractions

  • 7. Percentages Calculators

    • Calculate Percentages of Numbers: p% of N = ?
    • Number N Is P% Percent of What Missing Number?
    • What Is a Number as a Percentage of Another?
    • Convert and Write Numbers, Proportions, Ratios or Fractions as Percentage Values
    • Relative Percent Change (Difference) Calculator
    • Increase Numbers by Percentages of Values
    • Decrease Numbers by Percentages of Values
    • Percentages Into Numbers and Marks Converter

  • 8. Geometry - Triangle

    • Solve a Triangle Given the Lengths of Its Three Sides
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• Money Calculations

  • 1. Write Numbers in Words

    • USD in Words: Write US$ Dollar Amounts in Words, Converter
    • Check Writing Calculator: How To Write a Check

  • 2. Simple Interest

    • Simple Interest (Flat Rate) Calculator: Calculate the Sum of Money Earned by a Principal
    • Calculate the Principal That Yields a Sum of Money as Simple Interest
    • Calculate the Simple Interest Rate That Yields a Sum of Money as Simple Interest
    • Calculate the Duration Period That Yields a Sum of Money as Simple Interest

  • 3. Compound Interest

    • Compound Interest Calculator with Periodic Contributions
    • Calculate the Simple Interest on an Amount of Money

  • 4. Sales Tax

    • Sales Tax Addition Calculator: Charge the Sales Tax to Listed Prices
    • Deduct (Extract) the Sales Tax From Sales Tax Charged Prices

  • 5. VAT Value Added Tax

    • VAT Calculator, Net to Gross: Add the Value Added Tax Rate
    • Reverse VAT Calculator, Gross to Net: Remove VAT From Gross Amount
    • Update Prices with New VAT Rates: Calculate Gross and Net Amounts
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• Time, Dates and Years

  • 1. Write Numbers in Words

    • Year to Words Converter: Write Years in Words, in English
    • Date of Birth in Words, Converter. Write Dates in Words, in English
    • Time 12 / 24 Hour to Words Converter: How To Write Clock Time in Words

  • 2. Roman Numerals Converters and Calculator

    • Date of Birth to Roman Numerals Converter

  • 3. Leap Years Calculator

    • Leap Years Calculator. Check if the Year Is a Leap Year or a Common One
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