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Calculators and tools
for every task.

Convert, build, analyze, and calculate. Free online tools that turn complexity into clarity - without the guesswork.

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What you type stays on your device. 362 of our 369 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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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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Development

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

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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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Cooking

Cooking tools for the math you actually run into in a kitchen: scaling a recipe up or down, swapping volume...

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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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Unit Conversion

Unit conversion tools for turning a measurement expressed in one unit into the same quantity in another,...

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Discover

What people are using.

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#1

Budget Calculator

Break down income and expenses by frequency to see monthly or annual totals, net balance, and savings rate at a glance.

Budgeting
#2

Dummy Text Generator

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

Text
#3

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

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

Auto Loan Calculator

This auto loan calculator allows you to determine either your estimated monthly payment based on the vehicle price or the maximum vehicle...

Finance

Extract Conversion Calculator

Convert between LME, DME, and base grain weights while preserving equivalent gravity contributions.

Drink

Popular

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#1

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
#2

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
#3

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

Text to Binary Converter

Converts text to binary and back using UTF-8 (8-bit bytes) or UTF-16 (16-bit code units, with surrogate pairs for characters above the...

Encoding & Decoding

Structured Text to Markdown Converter

This tool formats basic structured text blocks from a Word document into clean, consistent Markdown based on a predefined schema.

Development
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