Free Online Tools

Explore a growing collection of free online tools organized by category. Find calculators, text utilities, productivity tools, social media resources, health tools, entertainment, and more.

50 tools available

Construction

Practical calculators and utilities for construction planning and material estimates.

Chain Link Fence Calculator

Estimate chain-link fabric rolls, line posts, terminal posts, top-rail sections, and bottom tension wire for a straight fence or rectangular enclosure with optional gates.

Date and Time

Tools for working with dates, ages, timelines, and time-based calculations.

Age Calculator – Calculate Your Exact Age

Calculate your age from your date of birth and see the result in completed years, months, and days.

Days Between Dates Calculator

Calculate the number of calendar days between two dates, including date ranges across different months, years, and leap years.

Days From Today Calculator

Calculate the signed number of calendar days between today and any past or future date. Future dates return a positive result and past dates return a negative result.

Graduation Year Calculator

Estimate your expected graduation year and graduating class from a U.S. K–12 grade or the current year of a two-year or four-year college program.

Online Alarm Clock

Set a free online alarm for today or tomorrow. View the current time, choose 12-hour or 24-hour format, and let the alarm repeat until you stop it.

Entertainment

Interactive generators, tests, and lighthearted tools created for entertainment.

Daily Fortune Cookie

Open a free virtual fortune cookie and reveal one message for today from a collection of 365 fortunes. Return later to read the same daily fortune.

Fantasy Dragon Name Generator

Generate 20 fantasy dragon names for novels, games, tabletop campaigns, characters, creatures, and original fictional worlds.

Fun Personality Test – Discover Your Character or Symbol

Take a free personality test and discover your playful match from Disney characters, mythology, animals, fantasy creatures, elements, civilizations, and more.

Name and Business Name Numerology Calculator

Calculate the traditional numerology number of a personal or business name using the Chaldean or Pythagorean system. See every letter value, word subtotal, total, and reduction step.

Name Mixer Generator

Combine two names to create original name ideas for couples, babies, characters, pets, usernames, brands, and creative projects.

Random City Name Generator

Generate 20 original-sounding fictional city and place names for stories, novels, games, maps, tabletop campaigns, and worldbuilding projects.

Finance

Tools for everyday money decisions, pricing, tips, and personal finance calculations.

Tip Calculator

Use this free online tip calculator to calculate a gratuity from any bill amount and preset or custom tip percentage.

Health

Health and wellness calculators for estimates related to nutrition, sleep, body metrics, and activity.

Adult BMI Calculator – Metric & US Units

Calculate your adult Body Mass Index from your height and weight, view the corresponding CDC adult BMI category, and understand the result's limitations.

Calories Burned Calculator

Estimate the total calories used during walking, running, cycling, swimming, strength training, sports, and other activities using your weight, duration, and standardized MET values.

Protein Intake Calculator – Daily Protein Estimate

Estimate a daily protein range based on your body weight, activity level, and goal. Designed as general guidance for healthy adults.

Sleep Calculator – Find Bedtime and Wake-Up Times

Estimate possible bedtimes or wake-up times using 90-minute planning cycles and a 15-minute allowance for falling asleep.

Image & Media

Tools for working with images, video, audio, thumbnails, metadata, and media authenticity.

AI Image & Media Authenticity Checker – C2PA Verifier

Check images, videos, and audio for Content Credentials, C2PA provenance, AI-use declarations, signatures, file integrity, metadata, and technical media information.

Free Online Video Compressor – Compress Videos Up to 3 GB

Compress MP4, MOV, WebM, MKV, AVI, and M4V videos online for free. Reduce video file size and download a compatible MP4 result with support for files up to 3 GB.

Image Metadata Checker

Inspect an image for EXIF data, camera settings, capture details, GPS coordinates, dimensions, file information, and other embedded metadata without uploading it.

JPEG Compressor – Compress JPG Images Online

Compress up to 20 JPEG or JPG images locally in your browser, compare the original and resulting sizes, and download one image or the complete batch as a ZIP file.

YouTube Thumbnail Downloader

Preview and download the highest available thumbnail quality from an accessible YouTube video.

Math

Calculators and solvers for equations, fractions, percentages, roots, and other math problems.

Fraction Calculator

Add, subtract, multiply, or divide two fractions and view the simplified fraction, decimal equivalent, and mixed number when applicable.

Marks to Percentage Calculator

Convert marks obtained out of maximum marks into a percentage, or combine multiple subjects with different maximum marks to calculate an accurate overall percentage.

Percentage Calculator – Find a Percentage of a Number

Calculate any percentage of a number online. Enter whole, decimal, negative, or greater-than-100 percentages and get the result instantly.

Polynomial Root Calculator – Real and Complex Roots

Find real and complex roots of polynomial equations from degree 1 through degree 6. Enter the coefficients and calculate numerical solutions online.

Quadratic Equation Calculator – Find Real and Complex Roots

Solve quadratic equations online using the quadratic formula. Enter coefficients a, b, and c to find the roots, discriminant, and solution type.

RSA Algorithm Calculator – Step-by-Step Key Generation

Calculate an educational RSA public key and private key from two prime numbers. See n, φ(n), e, d, modular inverse, encryption, and decryption step by step.

System of Equations Solver

Solve 2 × 2 and 3 × 3 systems of linear equations online. Find a unique solution or determine whether the system has no solution or infinitely many solutions.

Network

Utilities for checking network information, connectivity, and website availability.

Is Site Down? Website Status Checker

Check whether a public website is responding from the ORVITech server and view its HTTP status code when one is returned.

What Is My IP Address?

Check your public IPv4 and IPv6 addresses online. See which internet addresses are available to websites through your current connection.

Productivity

Simple tools designed to help you organize, count, generate, and complete everyday tasks faster.

Bulk Barcode Generator – Create PNG or SVG Batches

Create multiple Code 128, Code 39, EAN-13, EAN-8, UPC-A, or ITF-14 barcodes locally and download the complete PNG or SVG batch in one ZIP file.

Online Countdown Timer

Set a free online countdown timer in hours, minutes, and seconds. Pause or resume it at any time, follow the final-second warning, and hear an alert when time runs out.

Online Exam Timer

Set a clear exam countdown in hours, minutes, and seconds. Track the time remaining, pause or resume when appropriate, and hear an alert when the test period ends.

Online Stopwatch With Lap Times

Use this free online stopwatch to measure elapsed time, pause and resume, record individual laps, view cumulative times, and identify your fastest and slowest laps.

Online Tally Counter

Use this free online tally counter to count people, items, events, repetitions, scores, inventory, observations, and more with simple +1, -1, and reset controls.

PDF Compressor – Compress PDF Files Online Free

Compress PDF files online for free. Reduce documents up to 500 MB with automatic balanced compression and download the smaller PDF.

Presentation Timer – Free Online Speaking Timer

Use a free online presentation timer with a clear countdown, optional visual warning, pause and resume controls, and an alert when time runs out.

System

Tools for inspecting device and system information directly from your browser.

PC & Device Specs Checker

View the system, browser, display, graphics, WebGL, and WebGPU information your browser can report about your computer, phone, or tablet.

Text

Utilities for analyzing, comparing, generating, and transforming text.

Citation Generator

Create APA 7, MLA 9, and Chicago citations for websites, books, and journal articles, with support for multiple authors, in-text citations, notes, cited pages, DOIs, and formatted copying.

Duplicate Finder

Find and count every occurrence of a specific word, phrase, or sentence within a larger text using a private, case-insensitive search.

Invisible Character Viewer

Reveal zero-width spaces, hidden Unicode controls, non-breaking spaces, tabs, line breaks, bidirectional marks, and other invisible characters in text.

Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text as 1 to 100 paragraphs or an exact selection of up to 10,000 words, directly in your browser.

Online Diff Checker – Compare Text

Compare two blocks of text line by line and identify added, removed, and unchanged content in a clear, copyable diff.

Private Message Link – Send a One-Time Secret Message

Encrypt a private text message in your browser and create a one-time link. The encrypted message is deleted from the server on its first retrieval or when it expires.

Random Word Generator – Generate English or Spanish Words

Generate up to 100 unique random English or Spanish words. Optionally filter by starting letters, ending letters, or exact, minimum, and maximum length.

Word Unscrambler – Unscramble Letters Into Words

Unscramble up to 15 letters into English words. Use blank-tile wildcards and optional starting, ending, and required-letter filters to narrow the results.