THE YORPHIVES COLLECTION
All free tools
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⌕ Search the tool library ↗Calculators16 tools
Add or Subtract DaysAdd or subtract calendar days from a date.Average & Median CalculatorCalculate the mean, median, sum, and range of a list of numbers.Break-even CalculatorEstimate the number of units needed to cover fixed costs.Business Days CalculatorCount weekdays between two dates, with an optional list of holidays.Compound Interest CalculatorEstimate the growth of savings with monthly compounding and contributions.Currency Converter with Manual RateConvert a currency amount using an exchange rate you provide.Discount CalculatorCalculate a sale price and savings from an original price and discount.Loan Payment CalculatorEstimate a fixed-rate monthly loan payment and total interest.Percentage CalculatorCalculate a percentage of a value, a percentage share, or percentage change.Profit Margin CalculatorCalculate profit, margin, and markup from cost and selling price.Return on Investment CalculatorCalculate net gain and return on investment from a cost and total return value.Reverse Sales Tax CalculatorFind the pre-tax amount and tax included in a total price.Sales Tax CalculatorCalculate tax and the total from an amount and a rate you provide.Time Duration CalculatorFind the time between two clock times, including an overnight end.Tip & Bill Split CalculatorCalculate a tip and split a bill among a group.Unit ConverterConvert common length, weight, and temperature units.
Creator2 tools
Design8 tools
Aspect Ratio CalculatorSimplify image dimensions and calculate a proportional height.Color Contrast CheckerCheck text and background colors against WCAG contrast thresholds.Color Palette GeneratorGenerate five evenly spaced colors from a hex color.CSS Box Shadow GeneratorCreate CSS box-shadow code and preview the effect.CSS Gradient GeneratorCreate a two-color CSS linear gradient and preview the result.CSS Grid GeneratorGenerate a responsive-friendly CSS grid declaration with equal columns.Hex Color ConverterConvert a hex color into RGB and HSL values.PX to REM ConverterConvert CSS pixel and rem values using your chosen root font size.
Developer25 tools
Base64 Encoder & DecoderEncode and decode UTF-8 text using Base64.CSV Column ExtractorSelect a CSV column by header, preserving quoted fields and newlines.CSV to HTML TableGenerate properly escaped HTML table markup from a CSV.CSV to JSON ConverterConvert CSV with a header row into an array of JSON objects.CSV to Markdown TableTurn CSV data into a Markdown table while preserving quoted commas and line breaks.HTML Entity Encoder & DecoderEncode special HTML characters or decode common entities and numeric references.IPv4 Subnet CalculatorCalculate an IPv4 network, subnet mask, address range, and usable hosts from a CIDR prefix.JSON Formatter & ValidatorFormat, minify, and validate JSON while preserving the original numbers.JSON Key SorterSort nested JSON object keys while preserving array order.JSON Lines ConverterConvert JSON Lines to a JSON array or a JSON array to JSON Lines.JSON Merge PatchApply an RFC 7396 merge patch to a JSON document without sending your data away.JSON Pointer ExplorerSelect a value from a JSON document using an RFC 6901 JSON Pointer.JSON to CSV ConverterConvert an array of JSON objects into CSV for spreadsheets and data tools.JWT DecoderRead the header and payload of a JSON Web Token locally.Markdown to HTML ConverterConvert Markdown into HTML locally using the open-source Marked parser.Number Base ConverterConvert whole numbers between binary, octal, decimal, and hexadecimal with arbitrary precision.Regular Expression TesterFind regular-expression matches and capture groups in text, privately in your browser.SHA Hash GeneratorCreate a SHA-256, SHA-384, or SHA-512 hash of UTF-8 text.Text to Hex ConverterEncode text as UTF-8 hexadecimal bytes or decode valid UTF-8 hex back to text.Unicode Code Point InspectorInspect the Unicode code point for each character in a string.Unix Timestamp ConverterConvert Unix timestamps to UTC dates or timezone-qualified ISO dates to timestamps.URL Encoder & DecoderEncode or decode a URL component using percent encoding.URL ParserInspect a URL’s host, path, query parameters, and fragment.URL Query Parameter BuilderAdd or replace URL query parameters safely without manually encoding them.UUID GeneratorGenerate version 4 UUIDs using your browser’s secure random generator.
Files8 tools
Batch File RenamerGive multiple files consistent numbered names and download one ZIP.Batch Find and Replace in FilesFind and replace exact text across multiple UTF-8 files and download the updated copies as a ZIP.Duplicate File FinderFind byte-identical duplicate files by SHA-256 and byte comparison without uploading or deleting anything.File Format InspectorIdentify common file types from actual file signatures instead of filenames.File SHA-256 ChecksumCalculate the SHA-256 checksum of a file locally.Open-Source Conversion Command BuilderMake copyable commands for free desktop conversion tools.ZIP Contents ViewerView ZIP filenames and uncompressed sizes without extracting anything.ZIP File CreatorCreate a downloadable ZIP of local files with no uploads.
Images4 tools
Add Text WatermarkAdd a text watermark to an image without uploading it.Image CropperCrop a JPEG, PNG, or WebP image using pixel coordinates.Images to PDFCombine JPEG, PNG, or WebP images into a PDF, one image per page.Rotate and Flip ImageRotate an image by 90-degree increments or flip it horizontally.
Marketing6 tools
Campaign URL BuilderCreate clean UTM tracking links for campaigns, newsletters, and social posts.Email Link GeneratorCreate a mailto link with an optional subject and message.Robots.txt GeneratorBuild a basic robots.txt file with optional disallowed paths and sitemap.SEO and Open Graph Meta Tag GeneratorCreate basic page title, description, canonical, and Open Graph tags.URL Tracking Parameter RemoverRemove common tracking parameters from a link without visiting the destination.XML Sitemap GeneratorCreate an XML sitemap from a list of page URLs on one website.
PDF5 tools
Extract PDF PagesCreate a new PDF from the pages or ranges you choose.Merge PDF FilesCombine PDF documents into one file directly in your browser.PDF Page CounterCount PDF pages and inspect their dimensions locally.Remove PDF PagesRemove selected pages and download the remaining PDF.Rotate PDF PagesRotate all or selected PDF pages by a right angle.
Presentations2 tools
Spreadsheets3 tools
Writing12 tools
Duplicate Line RemoverRemove repeated lines while keeping their original order.Line SorterSort lines alphabetically or in natural numeric order.List and Delimiter ConverterJoin lines with a separator or split separated text into a list.Lorem Ipsum GeneratorGenerate placeholder paragraphs for mockups, prototypes, and layouts.Reverse TextReverse text while preserving emoji and combined characters where supported.Text Case ConverterConvert text to uppercase, lowercase, title case, or sentence case.Text Difference CheckerCompare two versions of text line by line.Text Find & ReplaceFind and replace an exact piece of text without uploading it.URL Slug GeneratorTurn a title into a clean, readable URL slug.Whitespace CleanerClean spaces and blank lines with simple, configurable options.Word & Character CounterCount words, characters, sentences, paragraphs, and estimated reading time.Word Frequency CounterFind the most frequently used words in a piece of text.