A directory of 54 free online tools — calculators, encoders, decoders, generators, and writing tools. Same design philosophy across the whole network.
textrepeat.net is part of a network of free, single-purpose online tools. Every site shares the same design philosophy: focused, fast, privacy-friendly, no signup, no upsell, no anti-adblock pop-ups.
Flip text backwards, or reverse the order of lines or words. Copy-paste, no signup.
Alphabetize a list A→Z or Z→A, ignore case, and remove blank lines.
Delete repeated lines and keep only the first of each unique line.
Randomize the order of your lines with a fair Fisher-Yates shuffle.
Turn text into 16 copy-paste Unicode styles — cursive, aesthetic, small caps, gothic, zalgo, and more.
Calculate square footage for rooms, floors, walls, and land. Supports rectangles, triangles, circles, and irregular shapes. Free and instant.
Calculate percentages, percentage change, percentage difference, and more. Multiple calculation modes for everyday and professional use.
Calculate exact age in years, months, days, hours, and minutes from any date. Find the difference between two dates instantly.
Decode Base64-encoded strings and files instantly in your browser. Supports standard and URL-safe Base64. No data sent to servers.
Encode text or files to Base64 format instantly. Supports standard and URL-safe Base64 encoding. Free and client-side.
URL encode and decode strings, query parameters, and full URLs. Handles all special characters and Unicode. Essential developer tool.
Check the strength of any password instantly. Get detailed analysis, crack time estimates, and improvement suggestions. 100% client-side.
Count words, characters, sentences, paragraphs, and reading time as you type. Useful for essays, blog posts, social media captions, and SEO content.
Free online UUID generator — v1, v4, v5, v7, GUID & Nil UUID. RFC 9562 compliant. No tracking, no logs. All generation happens in your browser.
Format, validate, minify, and convert JSON in your browser. Pretty-print messy JSON, spot syntax errors with line numbers, and switch between JSON, YAML, CSV, and XML.
Generate MD5, SHA-1, SHA-256, SHA-512 and other cryptographic hashes from any text or file. Useful for integrity checks, password hashing demos, and developer testing.
Convert between Unix epoch timestamps and human-readable dates. Supports seconds, milliseconds, and microseconds. Time zone aware.
Repeat any word, phrase, emoji, or sentence up to 100,000 times. Eight specialty tools for WhatsApp messages, emoji walls, stress-test data, Lorem Ipsum, and more.
Work hours and timesheets — hours between times, weekly totals, overtime pay, time between dates, and 50+ time zones. No signup.
Engineering and scientific unit converter with printable reference tables — wire gauges, drill bits, thread specs, pipe sizes, and more.
Convert between profit margin and markup, find break-even, and factor in platform fees, shipping, and tax. With multi-product comparison.
Dimensional (billable) shipping weight for FedEx, UPS, USPS, DHL and 13 more carriers. Compare actual vs volumetric weight with 2026 divisors.
Calculate the volume of a box from its length, width, and height in any units. Cubic feet, inches, meters — for shipping, storage, and packing.
Parcel length-plus-girth against carrier size limits, plus body circumference measurements for fitness tracking. Two calculators in one.
Free, unbiased solar and off-grid calculators — system sizing, savings and payback, battery banks, and country-specific incentive rules.
Calculate, split, and visualize subnets. IPv4/IPv6, VLSM planner, cloud-aware reserved IPs (AWS, Azure, GCP), and Terraform export.
Network and broadcast addresses, usable host range, wildcard masks, and VLSM planning for IPv4 and IPv6. Cloud-aware, with a learn center.
Build and decode cron expressions with plain-English explanations and next run times. Supports Unix, Quartz, AWS, and GitHub Actions.
Build, test, and debug regular expressions with token-by-token plain-English explanations, a pattern library, and code in 7 languages.
Convert text between Title Case (AP, Chicago, APA, MLA), sentence case, camelCase, snake_case, kebab-case, and more. Side-by-side preview.
35+ browser-based image tools — compress, convert, resize, crop, and watermark. JPG, PNG, WebP, AVIF, HEIC. Files never leave your device.
Online alarm clock, timer, stopwatch, and world clock that runs in your browser. Alarms ring even with the tab in the background.
Strip EXIF, GPS, and hidden metadata from images, PDFs, and Office files — locally in your browser, with a pre-strip inspector.
Calculate loan EMIs for home, car, and personal loans with amortization schedules and total interest breakdowns.
Merge, split, compress, convert, and edit PDF files in your browser. No uploads to a server.
Convert colors between HEX, RGB, HSL, and more, build palettes, and check contrast for accessibility.
Generate QR codes and barcodes in multiple formats. Download as PNG or SVG for print and web.
Calculate voltage drop and wire size for electrical runs, with support for copper and aluminum conductors.
Estimate daily calorie needs, track intake, and plan macros for weight loss, maintenance, or gain.
See the total interest paid over the life of a loan or mortgage, with a full amortization schedule.
Estimate the air conditioner tonnage needed to cool a room or home based on area, climate, and conditions.
Calculate the volume and fill level of cylindrical, rectangular, and oval tanks in any units.
Work out cubic yards of concrete, gravel, mulch, or soil needed for a project from its dimensions.
Calculate body mass index and basal metabolic rate, with daily calorie needs by activity level.
Size a solar battery bank from your daily load, autonomy days, and depth-of-discharge targets.
Add, subtract, multiply, and divide fractions with step-by-step working and simplified results.
Size a generator or battery backup from the appliances you need to run and their runtime.
Convert cooking measurements between cups, grams, ounces, and milliliters, with ingredient densities.
Convert numbers into words for checks, invoices, and legal documents, in multiple currencies and formats.
Calculate stair rise, run, stringer length, and number of steps to code from your total height.
Estimate concrete, cement, sand, and aggregate quantities for slabs, footings, and columns.
Project mutual-fund SIP returns with expected rate, tenure, and step-up contributions.
Estimate shingles, underlayment, and squares needed for a roof from its area and pitch.
Calculate weighted and unweighted GPA, convert between scales, and plan the grades you need.
A suite of construction calculators — materials, areas, volumes, and costs for common building tasks.
Calculate swimming pool volume in gallons or liters for rectangular, round, and oval pools.
Test your download and upload speed, ping, and jitter right in the browser. No app required.
Instantly see your public IP address, location, ISP, and browser details. IPv4 and IPv6.
Look up domain registration, ownership, nameservers, and expiry dates with a clean WHOIS report.
Each site is focused on one task. A single mega-site with hundreds of tools (like some competitors) ends up cluttered and slow. By splitting tools across focused domains, each site loads fast, ranks well for its specific keywords, and stays easy to navigate.
If you have suggestions for tools we should build or add, email us via the contact page.