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Decimal To Fraction Converter
Parse a finite decimal as an integer over a power of ten and reduce it with integer greatest common divisors.
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Density Calculator
Density in kg/m³ = mass / volume.
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Density Converter
Convert a quantity using the listed fixed unit factors.
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Determinant Calculator
Find the determinant of a 2 × 2 matrix.
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Dice Probability Calculator
Find the exact chance of a target sum with identical fair dice.
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Discount Calculator
Savings = original price × discount / 100; sale price = original price − savings.
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Distance Between Two Points Calculator
Find Euclidean distance between two points in a plane.
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DOCX to EPUB converter
A reflowable EPUB 3 book from supported Word blocks. Extract sanitized DOCX structure, then build an EPUB package with supplied title and author.
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DOCX to HTML converter
Sanitized structural HTML from a Word document. Read DOCX with Mammoth and sanitize its text, headings, lists, links and basic tables.
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DOCX to ODT converter
An OpenDocument text file with extracted Word structure. Convert supported DOCX blocks to a ZIP with OpenDocument content and manifest XML.
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Dot Product Calculator
Calculate the scalar dot product of two three-dimensional vectors.
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DPI Calculator
Pixel density = pixel length / printed length in inches.
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DXF to SVG Converter
Convert supported ASCII 2D DXF lines, polylines, circles and arcs to SVG. Unsupported entities are reported so geometry is not silently omitted.
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Dynamic Viscosity Converter
Convert dynamic viscosity between the listed units.
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Efficiency Calculator
Calculate energy efficiency as useful output / input × 100%.
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Electric Charge Converter
Convert a quantity using the listed fixed unit factors.
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Electric Charge Density Converter
Convert electric charge density between listed units.
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Electric Current Converter
Convert a quantity using the listed fixed unit factors.
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Electric Field Calculator
Signed radial electric field = ke × charge / distance².
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Electric Field Strength Converter
Convert electric field strength between listed units.
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