Number Tools
Generate, filter, sort, convert and analyze numbers and numeric lists.
Quick access
- Online Number Sequence Generator
- Online Number Filter Tool
- Online Number Sort and Shuffle Tool
- Online Max and Min Tool
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Online Number Sequence Generator
Generate an arithmetic number sequence from start, end and nonzero step, with decimal rounding and a choice of separators.
Online Number Filter Tool
Filter numbers by size, range, parity, or integer criteria
Online Number Sort and Shuffle Tool
Sort a list of numbers ascending, descending, reversed, or randomly.
Online Max and Min Tool
Find the minimum, maximum, range and count of a number list. Choose 0–12 decimal places; duplicates remain included.
Binary Converter
Convert signed integers between binary and decimal exactly, up to 10000 digits. Check examples, preserve large values and copy the result.
Hexadecimal Converter
Convert signed integers between hexadecimal and decimal with BigInt precision. Supports up to 10000 digits; copy the result.
Online Roman Numeral Converter
Convert integer values 1–3999 to canonical Roman numerals and back. One input, selected direction, local processing.
Online Number Group Splitter
Split the number list into consecutive groups of a fixed maximum size.
Number permutation generator
List every distinct full-length arrangement of a number list.
Online Multi-line Number Length Filter
Keep text lines containing an exact number of ASCII digits, preserving their text and order.
Number frequency counter
Count each recognized numeric value and its percentage; equal counts retain first appearance order.
Online Number Extractor
Extract finite numeric fragments from mixed text in encounter order, one normalized value per line. Runs locally in your browser.
Chinese Number Converter
Convert integer lists to ordinary simplified-Chinese numerals, with each original value shown alongside its result.
Number list sum calculator
Add a complete list of finite numbers, with compensated summation to reduce loss from cancellation.
Number list product calculator
Multiply a complete list of finite numbers, with checks for input and intermediate numeric range limits.
Online Number Arithmetic Calculator
Apply one operation and one common operand independently to every number in a list. Supports +, −, ×, ÷ and remainder.
Online Serial Number Generator
Batch generate serial numbers with prefix and zero padding
Thousands Separator Formatter
Format a list of numbers with the grouping and decimal symbols of this page’s language.
Online Number Difference Comparator
Compare two numeric lists by membership, preserving source order and duplicates. Runs locally in your browser.
Missing Number Finder
Find missing safe integers between the smallest and largest values in a list. Results appear in ascending order, one per line.
Online Duplicate Number Filter
Filter duplicate, unique, or deduplicate numbers
Online Standard Deviation Calculator
Calculate the mean, population standard deviation and sample standard deviation of a list of finite numbers.
Odd and even integer filter
Split a complete list of safe integers into odd and even rows, preserving order and repeats.
Online Number Outlier Detector
Find values outside IQR fences in at least four finite numbers; preserve input order and repeated outliers.
Online Number Palindrome Checker
Check whether the normalized text of each finite number reads the same in both directions, preserving order and duplicates.
Online Amount Splitter
Split one decimal amount into nearly equal shares. Each share differs by at most 0.01, and the exact sum preserves the rounded total.
Online Number Range Filter
Extract Numbers in a Specified Range
Online Number Exclusion Filter
Remove numeric values containing selected digits while preserving the order and duplicates of retained values.
Online Fixed-Digit Random Number Generator
Generate random integers in bulk by digit count
Distinct ASCII digit count filter
Keep lines with exactly the chosen number of distinct ASCII digit characters 0–9. Repeated occurrences count once.
Remove Numbers with the Same Digits
Keep the first number from each group with the same digits. Preserve input order, with exact non-negative integers up to 9007199254740991.
Online Permutation and Combination Calculator
Count ordered selections P(n,r) and unordered selections C(n,r) without replacement. Exact integers for 0≤r≤n≤1000; copy the results.
Number magnitude text bars
Compare a finite number list using relative text bars, scaled to the largest absolute value in that list.
Online Number Dot Matrix Generator
Turn 1–100 ASCII digits into five rows of Unicode text in a seven-segment style, preserving leading zeros.
Chinese number slang lookup
Look up eight fixed number codes used in Chinese online chat, with Chinese phrases and English explanations.