Free Everyday Use Calculators

QR Code Generator | Custom QR Codes

Generate scannable QR codes for URLs, text, email, phone numbers, SMS messages, Wi-Fi logins, and contact cards. Customize size, margin, colors, error correction, print size, and download PNG or SVG.

Online Timer | Countdown with Presets

Set a countdown timer for work blocks, cooking, workouts, study sessions, and breaks. Includes quick presets, saved custom timers, pause/resume, progress tracking, repeat mode, and optional sound alerts.

Stopwatch | Laps, Splits & Average Time

Use a precise online stopwatch with lap tracking, split times, fastest and slowest lap detection, average lap time, pace estimates, session summaries, and CSV export.

Pomodoro Timer | Focus Sessions & Breaks

Plan focused work with a customizable Pomodoro timer. Set focus and break lengths, track sessions, log distractions, copy daily summaries, export logs, and auto-start breaks.

Online Notepad | Autosave Notes & Word Count

Write quick notes in a clean browser notepad with local autosave, word and character counts, find and replace, copy, download, and restore. Notes stay on your device.

Text to Speech Tool | Read Text Aloud

Paste text and listen in your browser with selectable voices, rate, pitch, volume, live word highlighting, queue navigation, speaking-time estimates, and copyable cue sheets.

Markdown Viewer | Live Preview & HTML Export

Preview Markdown instantly with headings, lists, links, blockquotes, code, tables, task lists, and a clean reading pane. Copy rendered HTML or plain text for docs, posts, and notes.

Lorem Ipsum Generator | Placeholder Text

Generate placeholder copy by paragraph, sentence, word count, or character target. Choose classic, plain, UI, editorial, or product copy and export plain text, HTML, Markdown, or JSON.

Text Diff Checker | Compare Two Texts

Compare two blocks of text line by line and word by word. Highlights added, removed, and changed lines, shows match percentage, supports file drop, and copies JSON reports.

Alphabetize List Tool | Sort Lines A-Z

Sort lists alphabetically, naturally, numerically, by length, word count, randomly, or by CSV column. Trim whitespace, remove duplicates, keep headers, and copy clean output.

Remove Line Breaks Tool | Clean Text Online

Remove line breaks, extra spaces, tabs, duplicate blank lines, and broken paragraph wrapping from copied text. Repair hyphenated breaks, download cleaned text, and copy cleanup reports.

Password Strength Checker | Entropy & Safety Tips

Check password strength locally in your browser. Estimates entropy, common-pattern risk, crack-time ranges, policy compliance, character diversity, and practical improvement tips.

Random Word Generator | Words, Prompts & Ideas

Generate random words for writing prompts, games, naming ideas, vocabulary practice, and brainstorming. Use live word relationships or local banks, save favorites, view definitions, and export TXT or CSV.

Word Scrambler | Shuffle Letters & Make Variants

Scramble words or phrases into letter variants for games, classroom activities, puzzles, and writing prompts. Preserve spaces, show answer keys, use timer mode, and print worksheets.

Random Team Generator | Balanced Groups

Create random teams from a list of names. Choose team count or team size, add skill scores and captains, balance teams, copy clean lists, print assignments, or export CSV.

Readability Calculator | Grade Level & Scores

Measure writing clarity with Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG, sentence difficulty highlights, passive voice checks, audience targets, and copyable reports.

Caffeine Calculator | Daily Intake & Half-Life

Estimate caffeine from coffee, tea, energy drinks, soda, pre-workout, chocolate, and custom items. Compare intake with guidance, model bedtime caffeine, find a cutoff time, and log days.

Coffee Ratio Calculator | Brew Water & Grounds

Calculate coffee grounds and water for pour-over, drip, French press, AeroPress, cold brew, moka pot, and espresso. Choose strength, cups, ratio, brew timer, save recipes, and copy brew cards.

Cooking Time Calculator | Weight, Method & Temperature

Estimate cooking time from food type, weight, method, oven temperature, and doneness target. Includes side-dish timing, rest reminders, copyable plans, and doneness checklists.

Microwave Wattage Converter | Cooking Time Adjuster

Convert microwave cooking times between package wattage and your microwave wattage. Adjust power level, standing time, stir schedule, saved wattage, food presets, and comparison charts.

Pizza Dough Calculator | Hydration & Baker Percentages

Build a pizza dough formula from dough ball count, ball weight, hydration, salt, yeast, oil, and sugar. Shows baker percentages, yeast guidance, fermentation timeline, recipe cards, and print output.

Cake Pan Converter | Batter Scaling & Pan Sizes

Convert cake recipes between round, square, rectangular, loaf, bundt, cupcake, and sheet pans. Compares area, volume, batter, fill level, bake time, and closest pan substitutes.

Dog Food Calculator | Daily Calories & Portions

Estimate dog calories from weight, life stage, activity, neuter status, and body condition. Convert calories into cups, grams, cans, meal schedules, cost, and food transition plans.

Cat Food Calculator | Daily Calories & Portions

Estimate cat calories from weight, life stage, neuter status, activity, and body condition. Convert calories into wet and dry portions, hydration, cost, and food transition plans.

Screen Time Calculator | Daily, Weekly & Yearly Use

Calculate how daily screen habits add up by week, month, and year. Break time into apps, compare goals, plan reductions, review week patterns, and copy an action plan.