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Exclude Digit Filter
Filter numbers by the digits they contain — check any position or one position counted from the right, keeping or removing the matches
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Outlier Detector
Flag unusual values in your data with IQR, Z-score or MAD detection, and see a deviation score for every number
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Repeated Digit Finder
Filter numbers by how often a digit repeats — a specific digit or any digit, with at-least or exactly-N rules
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Number Sequence Generator
Generate classic sequences — arithmetic, geometric, Fibonacci, Lucas, square, triangular — with the step difference and running total for every term, plus min/max/mean
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Sum Calculator
Add up each line of numbers in bulk and get a grand total for all groups, with support for decimals and negative numbers
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Dot Matrix Number Generator
Render numbers, times and dates as a 5x7 dot matrix with a retro LED look, with dot styles, zoom levels and several board colour themes
Compare Two Number Lists
Compare two sets of number lists to quickly find the difference values and unique numbers between them
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Serial Number Generator
Generate sequential serial numbers from a start value and step, with optional prefix, suffix and zero padding
Number Grouping Tool
Extract numbers from text and split them into groups based on the specified number per group.
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Odd and Even Number Sorter
Split any list of numbers into odd and even groups, with optional dedupe, ascending or descending order and negative number support
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Curved Text Generator
Lay numbers out along a circular arc - arch, bowl or full circle - with adjustable radius, sweep, size and colour, and export ready-to-use SVG code
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Number Property Checker
Batch-check mathematical properties — prime, square, Fibonacci, happy — plus parity and digit count, with a filter to list only one kind
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Product Calculator
Multiply each line of numbers in bulk and get the total product of all groups, handy for chain and compound calculations
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Shuffle Number Groups
Reshuffle multi-line number groups in bulk — sort or randomize inside each line and reorder the lines themselves, with optional dedupe
Duplicate Number Counter
Quickly identify and count duplicate numbers in multiple sets of numerical data, sorted by repetition count
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Number Splitter
Split a list of numbers into a given number of parts — sequential, interleaved or random, with optional dedupe
Number Range Filter
Accurately extract all numbers that meet the criteria based on the set value range
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Add Leading Zeros
Pad numbers with zeros to a target length in bulk — left or right, with optional decimal alignment and leading-zero cleanup
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SQL IN Clause Generator
Wrap every number with a prefix and a suffix, then join them with a separator to build ready-to-paste strings
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Palindrome Checker
Check whether numbers read the same forwards and backwards, optionally ignoring signs and decimal points, and list only palindromes or only non-palindromes
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Function Grapher
Plot functions online and export SVG - explicit, polar, parametric and implicit F(x,y)=0, with adjustable domain, sample count and grid
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Anagram Duplicate Finder
Find numbers that are rearrangements of each other by digit composition, reversal or exact match, then filter to the duplicates or the unique ones
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Number Frequency Counter
Analyse how values are distributed: how many times each one appears, its share, the cumulative share, and how many distinct values there are
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Special Number Generator
Generate square, cube, triangular, prime, Fibonacci and perfect numbers in one click, each with its formula
Combination Calculator
Calculate unordered number combinations online, supporting custom number of elements and selection quantity
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Place Value Number Generator
Build random numbers place by place — choose the allowed digits for the units, tens, hundreds and beyond, then generate in bulk with dedupe and sorting
Number Shuffler
One-click to randomly shuffle the order of existing number sequences and generate new random permutations
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Random Number Picker
Randomly pick a given amount of numbers from your list, with multiple groups, optional dedupe and ascending or descending output
Random Number Generator
Generate a batch of random numbers within a min-max range, with a custom count and separator
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Missing Number Finder
Find the numbers missing from a sequence: compare against a range step by step, list every gap or merge them into continuous ranges
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Number Visualizer
Turn numbers into horizontal bars, columns or a stacked share bar to compare magnitudes at a glance, with linear or log scale plus shares and ranks
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Filter Numbers by Digit Count
Filter numbers by digit count in bulk — equals, range, at least or at most, keeping or removing the matches
Duplicate Number Finder
One-click to filter out all duplicate numbers in the number list and display their occurrence count
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Big Random Number Generator
Generate extra-long random numbers with a chosen digit count, with optional leading zeros and dedupe — produced as text, so no precision loss
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Compare Multiple Number Sets
Use the first line as the basis and compare it with every other line — shared numbers, basis-only and line-only values
Number Extractor
Automatically identify and extract all numbers from any text, including integers, decimals and negative numbers
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Batch Math Calculator
Apply addition, subtraction, multiplication, division or modulo to a list of numbers at once, with a custom fixed value and precision
Permutation Calculator
Calculate ordered number permutations online, supporting custom number of elements and selection quantity
Number Sorter
One-click to sort number lists in ascending or descending order
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Combination Generator
One group of numbers per line — enumerate every combination that picks one number from each group, with custom joiners and dedupe
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Standard Deviation Calculator
Compute count, sum, average, standard deviation, minimum, maximum and range for each line of data, with sample or population formulas
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Number Omission Statistics
One group per line — count how often each number appears and how long it has been missing, with hit rate, current omission and max omission
Thousand Separator
Automatically add separators to long numbers by thousands place for easier reading and understanding
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Remove Commas from Numbers
Strip thousands separators, spaces and dashes from numbers in one click (1,234,567 becomes 1234567), with options to keep the decimal point and minus sign
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Amount Splitter
Split a total amount into equal, weighted or random shares that always add back up to the exact total - ideal for bill splitting and cost apportioning
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