Offline data tools — charts and statistics in your browser

Charts from data

18 tools

CSV to line chart A time series from a pasted table, exported as PNG Multi-series line chart Several lines on one canvas, from one pasted table CSV to bar chart Compare categories as vertical columns Horizontal bar chart Ranking with long category names that actually fit Grouped bar chart Two or three values per category, side by side Stacked bar chart The total and its parts in one column 100% stacked chart Shares of the whole, with the totals deliberately removed CSV to area chart A line with the space beneath it filled in Stacked area chart How a total and its composition changed over time CSV to pie chart One total split into a handful of parts CSV to donut chart A pie with the middle removed and the total put back in CSV to scatter plot Two columns plotted against each other to reveal a relationship CSV to bubble chart A scatter plot with a third number carried by the dot size CSV to radar chart Several criteria compared on one circular grid Waterfall chart How a starting figure became a final one, step by step CSV to Gantt chart A project timeline from a table of tasks and dates CSV to sparklines Every metric as its own miniature line, stacked in lanes Slope chart Before and after, one line per item

Statistics on data

26 tools

Descriptive statistics Seventeen summary measures for one column at once Mean, median and mode Three centres of the same data, and why they disagree Standard deviation calculator Spread in the same units as your data, sample and population Variance calculator Squared spread, in both the sample and population forms Quartiles and percentiles Where your data sits, from P5 to P99 Five-number summary Minimum, Q1, median, Q3 and maximum in one line Histogram builder The shape of a distribution, with bin width chosen for you Box plot builder Five numbers and the outliers, drawn compactly Outlier detection Two independent rules, and the rows they disagree about Z-score calculator Every value expressed in standard deviations from the mean Pearson correlation How strongly two columns move together, with a p-value Spearman correlation Rank correlation — robust to outliers and curved relationships Correlation matrix Every numeric column against every other, in one table Linear regression The line through your points, with its equation and R² Moving average Smoothing that reveals the trend and hides the noise Confidence interval for the mean The range the true average probably sits in Student's t-test Whether two groups really differ, with an effect size Chi-square test Whether two categorical variables are related Normality check Whether your data is normal enough for the usual formulas Frequency table How often each distinct value appears, with cumulative shares Pareto and ABC analysis Which few items produce most of the result Coefficient of variation Relative spread, comparable across different units Data normalisation Three ways to put a column on a common scale Weighted average An average where some rows count more than others Geometric and harmonic mean The right averages for growth rates and for speeds Data quality report Missing values, duplicates and column types, before you analyse anything

Text tools

73 tools

Character and Word Counter Counts characters, words, sentences and paragraphs as you type Capitalize First Letter of Each Line Capitalizes the first letter of every line, leaves the rest of the line untouched Find and Replace Replaces text with plain matching, whole words, or a regular expression Duplicate Line Remover Removes repeated lines from a list, keeping the first occurrence String Sorter Sorts lines of text alphabetically, A to Z String Joiner Merges a list of lines into one string with a chosen delimiter Keyboard Layout Converter Fixes text typed in the wrong keyboard layout — "ghbdtn" turns into "привет" Flip Text Upside Down Replaces letters with their "upside down" Unicode look-alikes and reverses the order Reverse Text Flips text backwards: as a whole, line by line, or just word order Dot to Space Replacer Replaces every period with a space — with an option to collapse the resulting double spaces Dot to Comma Replacer Replaces every period with a comma — or only periods between digits, for decimal numbers Comma to Dot Converter Replaces every comma with a period — or only commas between digits, for decimal numbers Lowercase First Letter of Each Line Lowercases the first letter of every line, leaves the rest of the line untouched Text Similarity Comparison Scores how similar two texts are by comparing their word sets Phone Number Finder Extracts phone-number-like fragments from a text Average Word Length Calculates average word length in characters — with or without surrounding punctuation Longest Word Finder Finds the longest word in a text, or the top 5 longest at once Space Counter Counts spaces in text — plain spaces, or together with tabs and line breaks Paragraph Counter Counts paragraphs, plus their average length and the longest one Sentence Counter Counts sentences and the average sentence length in words Text Case Converter UPPERCASE, lowercase, Title Case, Sentence case and iNVERT cAsE — in one place Remove Line Numbers Strips numbering like "1. ", "2)", "3 - " from the start of lines Random Case Generator RaNdOmLy fLiPs LeTtEr CaSe — for mocking-style text and chat jokes Cyrillic-Latin Transliterator Converts text between Cyrillic and Latin script using a practical web scheme HTML Tag Remover Strips HTML markup from text, leaving only readable content Word Joiner Merges every word of a text into one string — handy for filenames or slugs Line Counter Counts lines of text — all of them, or only the non-empty ones List Splitter Lays out a long list across several columns for pasting into a spreadsheet Line Numberer Adds a sequence number to the start of every line, with a configurable step List Cleaner Trims whitespace, removes empty lines and duplicates in one pass Remove Matching Lines Deletes every line that contains a given piece of text Add Prefix Adds your own text to the start and/or end of every line Text to Column Splits a delimited string into a list, one item per line Compare Lists Finds what's only in list A, only in list B, and in both Digit Counter Counts individual digit characters 0-9 in text Number Counter Finds and counts numbers in text, not individual digits Unique Character Counter Counts how many distinct characters appear in a text Unique Word Counter Counts how many different words a text uses, and how repetitive it is Punctuation Counter Counts punctuation marks and shows which ones appear most often Vowel Counter Counts vowel letters in text — Russian, English, or both Consonant Counter Counts consonant letters in text — Russian, English, or both Russian Letter Counter Counts only Cyrillic Russian-alphabet letters — no digits, punctuation or spaces English Letter Counter Counts only Latin-alphabet letters — no digits, punctuation or spaces Reading Time Calculator Estimates how long a text takes to read, from its word count Page Count Calculator Estimates the number of standard pages from a text's character count Email Domain Sorter Sorts or groups a list of email addresses by their domain End-of-Line Numberer Adds a sequence number to the end of every line — like "Text (1)" List Shuffler Puts every line of a list into a random new order List Order Reverser Flips a list upside down: last line first, first line last Reverse Alphabetical Sort Sorts lines of text alphabetically, Z to A Empty Line Remover Strips blank and whitespace-only lines from a block of text Number Line Extractor Keeps only the lines of a text that contain at least one digit Latin Line Detector Keeps only the lines of a text that contain at least one Latin letter Cyrillic Line Filter Keeps only the lines of a text that contain at least one Cyrillic letter Word Shuffler Shuffles the words within each line, keeping the lines themselves in place Phrase Shuffler Randomly shuffles the order of sentences in a text Alphabetical Word Sorter Sorts individual words alphabetically, not whole lines Letter Remover Strips every Cyrillic and Latin letter from text, keeping digits and punctuation Digit Remover Strips every digit 0-9 from text, keeping letters and punctuation intact Letter and Digit Remover Strips both letters and digits at once, keeping punctuation and other symbols Latin Letter Remover Strips Latin letters a-zA-Z, keeping Cyrillic, digits and punctuation intact Cyrillic Letter Remover Strips Cyrillic letters а-яёА-ЯЁ, keeping Latin, digits and punctuation intact Letters-Only Cleaner Keeps only letters and spaces, strips digits, punctuation and everything else Digit Extractor Pulls out only the digits from text, discarding letters and punctuation Russian Letters Only Keeps only Russian Cyrillic letters and spaces, strips everything else English Letters Only Keeps only plain Latin letters a-zA-Z and spaces, strips everything else Punctuation Remover Strips punctuation marks from a fixed set, keeping letters, digits and spaces Hashtag Remover Strips hashtags from text, and optionally @mentions too Extra Space Remover Collapses repeated spaces into one, without removing spaces entirely Remove Spaces Before Punctuation Removes the space before a comma, period, bracket and other marks Space Remover Deletes every space character from a text, leaving no separator behind Tab Remover Deletes tab characters from a text, or replaces each one with a single space Space Replacer Replaces every space in a text with a custom string of your choice

Unit converters

158 tools

Why offline matters here

Online chart builders and statistics calculators need your table on their server before they can draw anything. For a sales report, a payroll extract or a list of patients that is often simply not allowed — and even when it is allowed, the file ends up in someone else’s logs and backups. These tools remove the question entirely: there is no upload endpoint, because there is no server. The page is static HTML, the maths runs in JavaScript on your device, and the export file is assembled in memory next to you.

Data tools that never upload your files

Charts from data

Statistics on data

Text tools

Unit converters

Why offline matters here