Utiliverse
100% Free and Browser Based
Free online utility tools

Fast, Free Utilities for Everyday Tasks

No sign-ups and no software installs. Find practical calculators, converters, developer tools, text utilities, time tools, and testing resources in one organized directory.

40 tools and growing Searchable directory Desktop & mobile friendly

Some tools belong to more than one category, so a card may keep the color of its primary category while appearing under another filter.

40 tools available

Recently Added

A few of the newest utilities added to the Utiliverse directory.

All Utiliverse Tools

Search or filter the full directory. Some tools appear in more than one category when their use cases overlap.

Finance

Mortgage Payoff Calculator

Estimate mortgage payoff timing, monthly principal and interest, amortization, and interest savings from extra payments.

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Productivity

PDF Conversion Toolkit Pro

Convert images and documents to PDF, extract PDF text or page images, and merge, split or rotate PDFs — directly in your browser.

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Productivity

Image Resizer & Social Media Format Utility

Convert, resize, and prepare images with custom dimensions, aspect controls, and social-media presets.

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Finance

Home Affordability Calculator

Estimate your home buying budget using income, debts, mortgage rates, taxes, insurance, down payment and loan type.

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Finance

Auto Lease Calculator

Estimate your monthly car lease payment, depreciation, finance charge, taxes and total lease cost with the Utiliverse Auto Lease Calculator.

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Finance

Retirement Calculator

Estimate how much you may need for retirement, how much to save, potential retirement income, and how long your savings may last.

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Finance

Rental Property Calculator

Analyze a rental property investment with estimated cash flow, cap rate, cash-on-cash return, equity, sale proceeds and projected profit.

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Math

Scientific Calculator

Free online scientific calculator for arithmetic, trigonometry, powers, roots, logarithms, factorials and more.

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Testing

Screen Color Tester

Test fullscreen solid colors, inspect HEX and RGB values, use presets, and create simple color test images.

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Text

Simple Word Unscrambler

Find possible words from a set of letters with adjustable minimum length and result limits.

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Converters

Unit & Currency Converter

Convert common measurement units and currencies with a single browser-based conversion tool.

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Developer

JSON Formatting Utility

Format, validate, and minify JSON data directly in your browser with syntax highlighting and a full-screen code popout viewer.

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Math

Fraction Calculator

Calculate fractions instantly. Add, subtract, multiply, and divide mixed and proper fractions.

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Network

Email Message Header Analyzer

Analyze email internet headers, inspect hop latencies, and check authentication results like SPF, DKIM, and DMARC.

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Finance

Compound Interest Calculator

Free compound interest calculator for estimating growth, comparing compounding frequencies and understanding effective annual rates.

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Finance

Salary Calculator

Convert hourly, daily, weekly, biweekly, semi-monthly, monthly, quarterly and annual pay with the free Utiliverse Salary Calculator, including a working-day adjustment.

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Developer

IP Subnet Calculator

Free IPv4 and IPv6 subnet calculator. Calculate network address, broadcast, host range, subnet mask, usable hosts and IPv6 prefix information.

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Developer

Random String Generator

Generate customizable random strings using browser cryptographic randomness.

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Developer

Hash Generator

Generate SHA cryptographic hashes locally in your browser using the Web Crypto API.

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Developer

HAR File Viewer

Open and inspect HAR files locally in your browser. Review requests, statuses, URLs, timing, and network errors.

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Developer

HEX to RGB

Convert HEX colors to RGB, HSL and CSS values with a free browser-based developer utility.

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Testing

Internet Speed Test

Measure browser-based download, upload, ping, and jitter performance using network test endpoints.

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Developer

YAML to JSON

Convert YAML configuration and structured data to formatted JSON in your browser.

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Testing

Typing Lab

Practice typing speed and accuracy with timed word and sentence tests, WPM, accuracy, and character tracking.

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Developer

HTML Viewer

View, format, minify, and preview HTML code in a browser-based developer utility.

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Math

Percentage Calculator

Calculate percentages, ratios, percent increases, and percent decreases with three common percentage formulas.

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Text

Word Counter

Count words, characters, whitespace-free characters, and estimated sentences directly in your browser.

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Math

Volume Calculator

Calculate the volume of cubes, spheres, cylinders, and cones instantly with our free browser-based tool.

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Time & Date

Time Tracking Suite

Free online stopwatch, countdown timer, and Pomodoro tracker to boost your productivity.

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Developer

JSON to CSV Converter

Convert JSON arrays into spreadsheet-friendly CSV with nested-object flattening and local browser processing.

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Time & Date

Time Zone Converter

Compare multiple world time zones at a glance with DST-aware IANA time zone conversion, meeting overlap highlighting, and 12/24-hour formats.

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Time & Date

Days Between Dates Calculator

Free days-between-dates calculator for elapsed or inclusive days, weeks, weekdays, weekends, leap days, and calendar span.

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Time & Date

Military Time Converter

Convert 24-hour military time to 12-hour AM/PM time or regular time back to military HHMM and HH:MM formats.

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Time & Date

Time Unit Converter

Free time unit converter for milliseconds, seconds, minutes, hours, days, weeks, average months, years, decades and centuries with live results and an all-units table.

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Text

Text to Morse Code Converter

Free text to Morse code converter. Encode text into International Morse, decode Morse back to text, play audio, adjust WPM and pitch, copy results, and download TXT.

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Developer

Password Strength Analyzer

Free password strength checker with entropy estimates, crack-time scenarios, pattern detection, security recommendations, and a Web Crypto password generator.

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Developer

Email DNS Checker

Check MX, SPF, DKIM, and DMARC records, resolve mail-server IPs, estimate SPF lookups, and open reputation checks.

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Productivity

Animal Age Calculator

Estimate dog, cat, rabbit, and horse ages in human-equivalent years or reverse human age into an approximate animal age.

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Text

Case_Converter

Convert text between uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, and more.

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Productivity

Leap Year Checker

Free Leap Year Checker. Instantly check whether a year is a leap year, see the Gregorian rule, find nearby leap years, and scan a year range.

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Productivity

Image Cropper

Free browser-based Image Cropper. Upload any image format your browser can decode, drag or resize the crop area, use aspect-ratio presets, preview the crop, and export as PNG, JPG, or WebP.

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Productivity

Image Dimension Finder

Free browser-based Image Dimension Finder. Upload or paste an image to instantly see width, height, aspect ratio, megapixels, orientation, file type, file size, transparency, and print-size estimates.

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Productivity

Image Watermark Maker

Free browser-based Image Watermark Maker. Add custom text or logo watermarks, adjust opacity, size, rotation, position, repeat/tile settings, preview locally, and export PNG, JPEG, or WebP.

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Network

IP Address Lookup

Free IP address lookup tool for IPv4 and IPv6. Find approximate IP location, ISP/organization, ASN, network range, timezone, coordinates, currency, and related network details.

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Network

SSL Certificate Checker

Free SSL certificate checker to inspect a domain's certificate status, expiration date, issuer, subject, SAN coverage, TLS protocol, cipher and trust status.

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Productivity

Bill Splitter

Free online bill splitter calculator. Split restaurant bills evenly or by custom shares, include tip and tax, track who paid, and calculate who owes whom.

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Developer

Archive_Creator_Extractor

Create ZIP and RAR archives, unzip ZIP files, and extract RAR files directly in your browser. Add files or folders, choose compression, preview archive contents, and download or save extracted files.

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Finance

Tip Calculator

Free online tip calculator. Calculate gratuity, tax, service charge, total bill, and per-person amount. Split restaurant bills and choose common tip percentages instantly.

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Finance

Crypto Converter

Free cryptocurrency converter for Bitcoin, Ethereum, Solana, XRP and other popular coins. Convert crypto to USD, EUR, GBP and more using live market prices.

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Health

Sleep Calculator

Free sleep calculator. Find recommended bedtimes or wake-up times using adjustable sleep-cycle estimates, fall-asleep time, age guidance, and target sleep duration.

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Productivity

Chart Builder

Free online chart builder. Paste CSV or table data, create bar, line, area, pie or scatter charts, customize labels and colors, then export PNG or SVG.

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Network

Bandwidth Calculator

Free bandwidth calculator for transfer time, required bandwidth, and transferable file size. Supports Mbps, Gbps, MB/s, GB, GiB and practical efficiency estimates.

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Network

Port Checker

Free port checker and TCP/UDP port lookup. Enter a port number or service name, identify common services, view port ranges, and filter a common ports reference table.

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Network

WHOIS Lookup

Free WHOIS and RDAP domain lookup. Check registrar, registration date, expiration date, domain status, nameservers, DNSSEC, domain age, and raw RDAP data.

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Network

MAC Address Lookup

Free MAC address lookup. Identify manufacturer, OUI, assignment type, country, vendor block, address scope, delivery type, and normalized MAC formats.

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Text

Baby Name Finder

Explore baby names by meaning, naming tradition, style, starting letter, length, and common usage, then save favorites for a shortlist.

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Network

WiFi QR Code Generator

Create Wi‑Fi QR codes for password-protected, open, or hidden networks, then download, copy, or print a guest network card.

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Text

Random Name Generator

Generate random first names, last names, or full names with flexible filters, optional middle names, favorites, and batch generation.

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Finance

Fix & Flip Profit Calculator

Estimate purchase, renovation, financing, holding, and selling costs with projected profit, ROI, break-even price, and target purchase price.

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Math

Lottery Number Generator

Generate random lottery number combinations with common game presets, custom ranges, exclusions, multiple lines, and browser-based cryptographic randomness.

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Health

Baby & Toddler Feeding Scheduler

Create an age-based feeding timeline from birth through 24 months with options for breast milk, formula, combination feeding, solids, and daily schedule timing.

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Developer

HTTP Status Code Reference

Look up HTTP response codes, understand redirects and authentication errors, and troubleshoot client, server, and gateway failures.

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About Utiliverse

Practical tools for everyday decisions, tasks, and technical work

Utiliverse is a growing collection of free browser-based calculators, converters, developer utilities, productivity tools, text tools, and testing resources. The goal is simple: make practical tools easy to find, understand, and use without unnecessary setup.

The directory brings together tools for finance, development, networking, health, productivity, text, math, time and date, conversions, testing, documents, images, and other everyday digital tasks. Instead of searching across multiple websites for one-off utilities, visitors can browse one organized collection and quickly move between related tools. Some utilities naturally fit more than one category—for example, a networking tool may also be useful to developers—so overlapping tools can appear under multiple relevant filters while keeping a clear primary category.

Many tools can process information directly in your browser. Some features rely on external libraries, public data, or network services, so individual tool pages explain their behavior when that distinction matters. Calculator results are estimates based on the inputs and assumptions shown by each tool.

Utiliverse is designed for quick use on modern desktop and mobile browsers, with focused interfaces, clear inputs, and results that do not require creating an account or installing specialized software. The directory continues to grow as new calculators, converters, network utilities, developer resources, health tools, and other practical browser-based utilities are added and existing tools are improved.

Use the directory above to explore financial planning tools, technical utilities, document and image tools, text transformations, time utilities, calculations, and everyday digital helpers. For more detail about the site's purpose, privacy approach, and development philosophy, visit About Utiliverse.

Browser First

Open focused utilities without installing specialized software or creating an account.

Clear Inputs & Results

Tools are designed around understandable controls, useful outputs, and stated assumptions or limitations.

Growing Directory

New tools and improvements are added across finance, development, network, health, text, math, time, converters, testing, and productivity.