Utility Tools
Free utility tools — unit converters, QR code generator, color picker, and everyday essentials for quick tasks online.
About Utility Tools
83 everyday utility tools — password and random generators, unit converters, CSV cleaners, timers, resume builder, QR codes, and more. Generate a strong password, convert kilograms to pounds, or analyze a CSV: all processing happens locally in your browser with nothing uploaded.
Random Number Generator
Generates random integers within a user-defined min-max range with optional unique and sorted output. Uses the browser random number generator — fine for games, raffles, and sampling, not for security secrets. Input never leaves your device — everything runs locally in your browser.
Password Generator
Generates cryptographically strong random passwords with fully customizable length and character sets, plus memorable passphrases. Input never leaves your device — everything runs locally in your browser.
QR Code Generator
Renders a scannable QR code from any text or URL with a client-side Reed-Solomon encoder at fixed high error correction. Customize size, colors, and center logo, then download the PNG — free, local, no signup.
Barcode Generator
Generates real scannable barcodes in UPC-A, EAN-13, Code 128, and Code 39 — JsBarcode encoders with guard patterns, checksums, and start/stop codes, rendered to SVG. Input never leaves your device — everything runs locally in your browser.
Wheel of Names
Spin a colorful prize wheel with your names — giveaways, classrooms, team picks. Draw winners live with drama — free, local, no signup.
Counter Tool
Simple tap counter with increment, decrement, and reset — reps, inventory, headcounts. Count 200 items without losing place — free, local, no signup.
List Randomizer
Shuffle lists randomly — giveaway winners, team orders, presentation sequences. Pick fairly in one click — free, local, no signup.
List Sorter
Sort any list A–Z, Z–A, or by length with one click — ballots, rosters, data cleanup. Order 300 names for roll call instantly — free, local, no signup.
Random Decision Maker
Make random calls between options with animated draws and history. End debates with a fair draw — free, local, no signup.
Coin Flipper
Flip a virtual coin with heads/tails totals for instant decisions. Settle it fairly in one tap — free, local, no signup.
Dice Roller
Roll dice — d4 through d20 with up to 5 dice — for games and decisions. Totals summed live — free, local, no signup.
ULID Generator
Generate time-ordered ULID identifiers with Crockford base32 encoding. Input never leaves your device — everything runs locally in your browser.
Random Color Generator
Generate random hex, RGB, and HSL colors for palettes and placeholders. Find happy accidents fast — free, local, no signup.
Random Date Generator
Generate random dates from the past five years with ISO and long-form outputs. Input never leaves your device — everything runs locally in your browser.
Random Team Generator
Split names into fair random teams in seconds. Divide 20 players evenly — free, local, no signup.
Random String Generator
Generate random strings in alphanumeric, alphabetic, numeric, hex, or UUID formats. Mint references and IDs fast — free, local, no signup.
Random Word Generator
Generate random placeholder words with optional capitalization for games and naming. Find startup names that aren't taken — free, local, no signup.
Sequence Generator
Generate arithmetic, geometric, and custom number sequences with sums. Fill spreadsheets and test series — free, local, no signup.
ASCII Art Generator
Convert text to ASCII art with multiple font styles — download or copy the result for READMEs, code comments, and banners.
ASCII Font Generator
Generate ASCII-art text banners and figlet fonts for READMEs and terminals. Make headers that pop in plain text — free, local, no signup.
Random Picker Generator
Use the Picker to draw random winners from lists, with optional no-repeat draws. Settle raffles in one click — free, local, no signup.
Random Username Generator
Generate available-style usernames with adjectives, nouns, and numbers. Find handles that stick — free, local, no signup.
Nickname Generator
Generate fun nicknames from five patterns — gamer tags, fantasy, sci-fi, cute, and professional. Find a tag that sticks — free, local, no signup.
Emoji Picker
Pick emoji by keyword across 9 categories — copy anywhere. Find the exact reaction fast — free, local, no signup.
OTP Generator
Generate OTP codes — numeric, alphabetic, or hex — in batches of your chosen length. Make verification codes fast — free, local, no signup.
Random Time Generator
Generate random times with 24-hour and 12-hour outputs. Schedule surprise drills and test fixtures — free, local, no signup.
Random Sentence Generator
Generate random sentences for writing prompts, test data, and brainstorming. Break writer's block in one click — free, local, no signup.
Bulk QR Code Generator
Turn a CSV of URLs or text into styled QR PNGs in one batch — event badges, inventory labels, menus. Free tier generates 5 QR a day; Pro runs up to 100 per batch — local qrcode work.
Timer
Configurable countdown timer with hours, minutes, and seconds input. Features start, pause, and reset controls with visual progress bar. Input never leaves your device — everything runs locally in your browser.
Stopwatch
Precision stopwatch with start, stop, lap recording, and reset functionality. Lap times are displayed in a table for easy comparison. Input never leaves your device — everything runs locally in your browser.
Countdown Timer
Countdown to a specific date and time with live days, hours, minutes, and seconds display. Perfect for event countdowns and deadlines. Input never leaves your device — everything runs locally in your browser.
Interval Timer
Repeating interval timer for workouts and training. Configure sets, work period, and rest period with automatic cycling. Input never leaves your device — everything runs locally in your browser.
Tabata Timer
Tabata interval timer with 20 seconds work and 10 seconds rest per round. Features a 3-second preparation countdown and configurable rounds. Input never leaves your device — everything runs locally in your browser.
World Clock
See live times across world time zones with DST handling — schedule global meetings right. Know Tokyo time before calling — free, local, no signup.
Number Guessing Game
Guess the number 1–100 with hotter/colder hints and attempt tracking. Five tries is sharp play — free, local, no signup, learn binary search by feel.
Rock Paper Scissors
Play rock-paper-scissors against the computer with win/loss/tie scoreboard. Settle any debate in three throws — free, local, no signup.
Hangman Game
Play hangman with categories and difficulty levels — guess letters before parts run out. Six wrong guesses and it's over — free, local, no signup.
Unicode Code Point Viewer
Inspect any character's Unicode code points, HTML entities, and percent-encoded bytes. Debug invisible text issues precisely — local inspection, free, no signup.
Number to Words Converter
Write any number out in English words up to billions — checks, legal documents, invoices. Render 1,250,000 for a contract line — free, local, no signup.
Slugify
Slugify text to URL-friendly slugs with lowercase and trim options. Input never leaves your device — everything runs locally in your browser.
Numeronym Generator
Convert words to numeronyms (a11y-style) and acronyms. Input never leaves your device — everything runs locally in your browser.
Speed Converter
Convert speeds between km/h, mph, m/s, and knots instantly. Translate a 100 mph speed for any audience — free, local, no signup.
Weight Converter
Convert weight between kg, g, lb, oz, and stone. Supports both metric and imperial systems. Input never leaves your device — everything runs locally in your browser.
Data Size Converter
Convert data sizes between bytes, KB, MB, GB, TB, and PB. Understand disk space and file sizes in different units. Input never leaves your device — everything runs locally in your browser.
Cooking Measurement Converter
Convert cooking measurements: cups, grams, ounces, and milliliters for any ingredient — bake American recipes anywhere. Translate 1 cup flour to 120g exactly — free, local, no signup.
Fuel Consumption Converter
Convert MPG, L/100km, and km/L to compare fuel consumption across systems. Translate 30 MPG for European buyers — free, local, no signup.
Clothing Size Converter
Convert clothing sizes across US, UK, EU, and Asian systems for tops, shoes, and rings. Order a EU 42 as US 9 confidently — free, local, no signup.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results. Input never leaves your device — everything runs locally in your browser.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin temperature units instantly with formula shown. Translate 350°F for any recipe — free, local, no signup.
Unix Time Converter
Convert Unix timestamps to human-readable dates and back. Shows UTC, ISO 8601, locale, date, and time formats. Milliseconds, seconds, and ISO 8601 convert both directions with timezone clarity — local math, free, no signup.
Unit Converter
Convert between hundreds of units — length, mass, volume, temperature, area, speed, time, digital data, and more with a single click.
Power Converter
Convert between kW, hp, bhp, W, MW, and BTU/hr — engine specs, solar sizing, and HVAC math in one place. Size solar arrays and compare engine outputs correctly — free, local, no signup.
Pressure Converter
Convert between kPa, psi, bar, atm, Torr, and mbar. Input never leaves your device — everything runs locally in your browser.
Length Converter
Convert length and distance between km, miles, meters, yards, feet, and inches. Simple and intuitive. Input never leaves your device — everything runs locally in your browser.
Volume Converter
Convert volume between liters, mL, gallons, quarts, fl oz, and cups. Handy for cooking, science, and travel. Input never leaves your device — everything runs locally in your browser.
Area Converter
Convert area between square meters, square feet, acres, hectares, and square kilometers. Input never leaves your device — everything runs locally in your browser.
Paper Size Converter
Convert paper sizes — A4, Letter, Legal — with millimeter and inch dimensions. Fit US Letter content onto A4 correctly — free, local, no signup.
Ring Size Converter
Convert ring sizes across US, UK, EU, and Japanese standards with millimeter diameters. Buy a size 7 as EU 54 correctly — free, local, no signup.
Shoe Size Converter
Convert shoe sizes across US, UK, EU, and CM Mondopoint with foot-length mapping. Translate EU 42 to US 9 accurately — free, local, no signup.
Time Zone Converter
Shift a wall-clock time from one IANA timezone to another — DST handled via real zone offsets, with day-shift flags when the date rolls over. Free, local, no signup.
Column Extractor
Extract CSV columns by name into clean lists. Pull email and name columns from pasted CSV in seconds — local parsing, free, no signup.
CSV Deduplicator
Remove duplicate rows from CSV data based on a specific column. Keep only unique values for cleaner datasets — local processing, free, no signup.
Null Value Handler
Fill null (empty) cells in CSV data with a custom fill value. Clean datasets for analysis and migration — local processing, free, no signup.
CSV Row Sorter
Sort CSV rows by any column ascending or descending — numbers by value, text alphabetically. Order sales rows in seconds — local parsing, free, no signup.
CSV Row / JSON Generator
Generate random CSV rows or JSON lines for fixtures and tests — pick a format and row count. Seed mock data fast — local generation, free, no signup.
Line Sorter & Deduplicator
Sort lines alphabetically (A→Z, Z→A), reverse order, shuffle randomly, or remove duplicate lines. A–Z, Z–A, reverse, shuffle, and dedupe modes cover every ordering chore — local processing, free, no signup.
List Converter
Convert lists between comma, newline, pipe, tab, semicolon, and space delimiters. Move data across tools without reformatting — free, local, no signup.
Column Renamer
Rename CSV headers in bulk with old:new mapping — standardize client exports fast. Fix 40 messy columns before import — local parsing, free, no signup.
CSV Format Validator
Validate CSV structure — flag rows with wrong column counts and empty cells before import. Catch bad rows locally — free, no signup.
CSV Pivot Generator
Pivot CSV rows into summary tables — group, count, and sum without spreadsheets. Summarize 10k sales rows by region instantly — local pivoting, free, no signup.
CSV Row Filter
Filter CSV rows by column value with case-insensitive contains matching. Keep only the rows you need — local, free, no signup.
CSV Merger
Merge two CSV files on a shared key column — join related exports into one sheet. Combine two tables without spreadsheets — local merging, free, no signup.
CSV Splitter
Split CSV data into equal parts with headers in every chunk. Break large pastes into smaller pieces — local splitting, free, no signup.
CSV Analyzer
Analyze CSV structure — column types, counts, unique values, and empty cells. Spot malformed rows and mixed types before import.
Speed Test
Measures your internet connection’s download speed and latency by downloading a test file from a CDN. Upload speed is not currently measured.
Benchmark Builder
Run JavaScript speed benchmarks across five workloads with ops/sec scores. Prove which device runs faster — local measurement, free, no signup.
URL Shortener
Takes any long URL and generates a compact, shareable short link. Uses cloud-based processing. Short links resolve through managed providers with automatic failover — free, paced ~10 links/min per address.
Bulk URL Shortener
Shorten hundreds of URLs in one batch with automatic provider failover — paste a list, get clean links for campaigns and bios. Marketers prep 200 UTM links before launch — managed shortening (~10/min pace), sign in free.
Resume Builder
Provides a structured, form-based interface for entering work history and education, then prints a cleanly formatted resume via the print dialog (save as PDF) with plain-text export. Input never leaves your device — everything runs locally in your browser.
ZIP File Extractor
Peek inside any ZIP — list contents with sizes before extracting anything. Verify a 500 MB download's contents first — local fflate parsing, free, no signup.
iCal Event Generator
Build .ics calendar event files with summary, dates, location, and description — import anywhere. Send invites that land in every calendar app — free, local download.
WhatsApp Toolkit
Generates wa.me click-to-chat links, WhatsApp group invite links, QR codes for quick connections, and includes a chat analyzer and status text. Input never leaves your device — everything runs locally in your browser.
Bank Statement Analyser
Upload bank statement PDFs or CSVs and get income, expense, and transfer categories with visual spending breakdowns. Budgeters spot where Rs.18,000 leaks monthly — analysis is free and unlimited, exports count as Pro downloads.
More from Toolzum
✓ Everyday tools, local-first, free.
Local tools work offline after first load; AI and live lookups need a connection.
Utility FAQs
How long should a strong password be?
At least 16 random characters mixing upper/lowercase, digits, and symbols — roughly 95 bits of entropy, uncrackable by brute force. The generator uses your browser's cryptographic randomness, never a predictable pattern.
What QR error-correction level should I pick?
Medium (M) for clean screen display, High (H) for printed codes that may get dirty or partially covered — H survives up to 30% damage. Higher levels make denser, harder-to-scan codes.
How do I clean a messy CSV?
Trim whitespace, normalize delimiters, drop empty rows, and fix inconsistent quoting in one pass — then preview the table before downloading the cleaned file.
Do utility tools work offline?
Most do. Password generation, unit conversion, timers, and QR codes run entirely in-page — once loaded, they keep working with no connection.