Browse all Utiliverse tools
Find an individual calculator, converter or utility by name or category. Each tool opens on its own page.
Mortgage Payoff Calculator
Estimate mortgage payoff timing, monthly principal and interest, amortization, and interest savings from extra payments.
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.
Image Resizer & Social Media Format Utility
Convert, resize, and prepare images with custom dimensions, aspect controls, and social-media presets.
Home Affordability Calculator
Estimate your home buying budget using income, debts, mortgage rates, taxes, insurance, down payment and loan type.
Auto Lease Calculator
Estimate your monthly car lease payment, depreciation, finance charge, taxes and total lease cost with the Utiliverse Auto Lease Calculator.
Retirement Calculator
Estimate how much you may need for retirement, how much to save, potential retirement income, and how long your savings may last.
Rental Property Calculator
Analyze a rental property investment with estimated cash flow, cap rate, cash-on-cash return, equity, sale proceeds and projected profit.
Scientific Calculator
Free online scientific calculator for arithmetic, trigonometry, powers, roots, logarithms, factorials and more.
Screen Color Tester
Test fullscreen solid colors, inspect HEX and RGB values, use presets, and create simple color test images.
Simple Word Unscrambler
Find possible words from a set of letters with adjustable minimum length and result limits.
Unit & Currency Converter
Convert common measurement units and currencies with a single browser-based conversion tool.
JSON Formatting Utility
Format, validate, and minify JSON data directly in your browser with syntax highlighting and a full-screen code popout viewer.
Fraction Calculator
Calculate fractions instantly. Add, subtract, multiply, and divide mixed and proper fractions.
Email Message Header Analyzer
Analyze email internet headers, inspect hop latencies, and check authentication results like SPF, DKIM, and DMARC.
Compound Interest Calculator
Free compound interest calculator for estimating growth, comparing compounding frequencies and understanding effective annual rates.
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.
IP Subnet Calculator
Free IPv4 and IPv6 subnet calculator. Calculate network address, broadcast, host range, subnet mask, usable hosts and IPv6 prefix information.
Random String Generator
Generate customizable random strings using browser cryptographic randomness.
Hash Generator
Generate SHA cryptographic hashes locally in your browser using the Web Crypto API.
HAR File Viewer
Open and inspect HAR files locally in your browser. Review requests, statuses, URLs, timing, and network errors.
HEX to RGB
Convert HEX colors to RGB, HSL and CSS values with a free browser-based developer utility.
Internet Speed Test
Measure browser-based download, upload, ping, and jitter performance using network test endpoints.
YAML to JSON
Convert YAML configuration and structured data to formatted JSON in your browser.
Typing Lab
Practice typing speed and accuracy with timed word and sentence tests, WPM, accuracy, and character tracking.
HTML Viewer
View, format, minify, and preview HTML code in a browser-based developer utility.
Percentage Calculator
Calculate percentages, ratios, percent increases, and percent decreases with three common percentage formulas.
Word Counter
Count words, characters, whitespace-free characters, and estimated sentences directly in your browser.
Volume Calculator
Calculate the volume of cubes, spheres, cylinders, and cones instantly with our free browser-based tool.
Time Tracking Suite
Free online stopwatch, countdown timer, and Pomodoro tracker to boost your productivity.
JSON to CSV Converter
Convert JSON arrays into spreadsheet-friendly CSV with nested-object flattening and local browser processing.
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.
Days Between Dates Calculator
Free days-between-dates calculator for elapsed or inclusive days, weeks, weekdays, weekends, leap days, and calendar span.
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.
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.
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.
Password Strength Analyzer
Free password strength checker with entropy estimates, crack-time scenarios, pattern detection, security recommendations, and a Web Crypto password generator.
Email DNS Checker
Check MX, SPF, DKIM, and DMARC records, resolve mail-server IPs, estimate SPF lookups, and open reputation checks.
Animal Age Calculator
Estimate dog, cat, rabbit, and horse ages in human-equivalent years or reverse human age into an approximate animal age.
Case Converter
Convert text between uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, and more.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
WHOIS Lookup
Free WHOIS and RDAP domain lookup. Check registrar, registration date, expiration date, domain status, nameservers, DNSSEC, domain age, and raw RDAP data.
MAC Address Lookup
Free MAC address lookup. Identify manufacturer, OUI, assignment type, country, vendor block, address scope, delivery type, and normalized MAC formats.
Baby Name Finder
Explore baby names by meaning, naming tradition, style, starting letter, length, and common usage, then save favorites for a shortlist.
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.
Random Name Generator
Generate random first names, last names, or full names with flexible filters, optional middle names, favorites, and batch generation.
Fix & Flip Profit Calculator
Estimate purchase, renovation, financing, holding, and selling costs with projected profit, ROI, break-even price, and target purchase price.
Lottery Number Generator
Generate random lottery number combinations with common game presets, custom ranges, exclusions, multiple lines, and browser-based cryptographic randomness.
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.
HTTP Status Code Reference
Look up HTTP response codes, understand redirects and authentication errors, and troubleshoot client, server, and gateway failures.