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Calculators and tools
for every task.

Hydrometer temperature correction, baker's percentage, macro depth of field. The catalog is that specific across all 33 categories, and every page runs the calculation and explains the method behind it.

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What you type stays on your device. 418 of our 425 tools run entirely in your browser, with no account and no upload.

Categories

Productivity across disciplines.

From data to design, each category curates a focused kit of tools, calculators and converters.

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Business

Business tools for the operational numbers a small business runs every week: average order value, customer...

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Development

Development tools for the small utilities that show up on every engineer's desktop and never feel important...

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Drink

Drink tools for the proportions behind what ends up in the glass: scaling a recipe from a single serving to a...

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Design

Design tools for color work, icon and asset preparation, depth-of-field math for photography that crosses...

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Construction

Construction tools for the estimation work that comes before any project: square footage and material...

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Budgeting

Budgeting tools for the money math that comes up between paydays: splitting a bill and tip across a table,...

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Encoding & Decoding

Encoding and decoding tools for the small format conversions that come up constantly in development, security...

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Finance

Finance tools that compute the standard numbers you would otherwise build in a spreadsheet: loan and mortgage...

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SEO

SEO tools for the on-page work that an editor or content operator can finish without involving an engineer:...

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Discover

What people are using.

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#1

Garlic Converter

Convert between garlic cloves, heads, minced, powder, granulated, flakes, jarred, juice, and garlic salt using standard culinary equivalencies.

Cooking
#2

Macro Depth of Field (DoF) Calculator

Computes macro DoF as 2Nc(1+m)/m² from f-number N, circle of confusion c, and magnification m.

Photography
#3

ZPL Label Generator

Renders imported or pasted ZPL II code, including .

Business

Credit Card Generator

Luhn-valid test card numbers built from real IIN prefixes and lengths for Visa, Mastercard, American Express, Discover, JCB, Diners Club, and UnionPay.

Development

Coffee Brewing Calculator

Determine exact water volume, brew temperature, grind size, and steep time for any coffee method by entering your coffee dose and adjusting...

Drink

Slices in a Loaf Calculator

Slice count from floor of loaf length divided by slice thickness, with units in inches or centimeters.

Cooking

Popular

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#1

Token Calculator

Counts tokens in pasted text with OpenAI's o200k_base byte-pair tokenizer, exact for GPT-4o and newer and approximate for other providers.

Development
#2

Screen Size Calculator

Find the exact screen dimensions, pixel density (PPI), and ideal viewing distance based on screen resolution, aspect ratio, and size with this...

Technology
#3

Dummy Text Generator

Builds placeholder text by sampling words from Lorem Ipsum or a custom source to a target word or character count.

Text

Leather Thickness Converter

Convert leather thickness between ounces, millimeters, inches, and irons.

Materials

Randomize Text Lines Tool

Shuffles lines of text using Fisher-Yates, with optional Line Groups (1 to 100) that shuffle whole blocks while preserving internal order.

Text

Whitespace Formatter Tool

Improve text readability in large blocks of text or code by removing extra whitespace, standardizing heading formats, applying text transformations, and preserving...

Text
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