All Calculators

2048

Play 2048 free in your browser. Slide and merge tiles; goals 512 to 8192. No download, no sign-up. Grid 3×3 to 6×6. Works on desktop and mobile.

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Aim Trainer

Free browser aim trainer: tap targets for 30 or 60 seconds. See accuracy %, targets per minute, and best scores saved locally on mobile or desktop—no signup.

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Clicks Per Minute Test

Free click speed test with CPM and CPS. Timed 1s to 60s and a 1-minute click counter mode. Tap on mobile, track best and average per duration—no signup.

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Connect Four

Play Connect Four online: 7×6 grid, two-player or vs computer (Easy/Medium/Hard). Winning row glows. Runs in browser, no app.

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Hangman

Guess A–Z online: built-in words or custom lists (paste/upload .txt), adjustable wrong guesses, saves in-browser. Mobile or desktop; no download.

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Number Duel

Free guess-the-number game: higher-or-lower hints, 2 players or vs AI in browser—no download. Range starts 1–100.

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Reaction Time Test

Free online reaction time test: random delay, tap when green, 5-round average in ms. False-start detection, best score saved locally in browser—no signup.

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Spacebar & Key Mash Test

Free keyboard speed test: spacebar counter, key mash, and keys per minute (KPM) for 5s–60s. No mouse scoring—best and average saved in your browser.

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Typing Speed Test (WPM)

Free WPM typing test in your browser: long passages, timed 15s to 60s from first key, accuracy and correct chars/min. Best score saved locally—no signup.

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health

TDEE Calculator

Calculate your Total Daily Energy Expenditure (TDEE) using Mifflin-St Jeor or Katch-McArdle. Get calorie targets for maintenance, cutting, and bulking.

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Age Calculator

Free age calculator: exact age in years, months, days from date of birth. Compare ages, next birthday countdown, life stage, and generation.

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Cat Age Calculator

Convert your cat’s age to human years. Free calculator with life stages, weight check, and care guidance for indoor and outdoor cats.

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Dog Age Calculator

Convert your dog’s age to human years. Free calculator by breed size (small, medium, large, giant) with life stage and care tips.

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Sleep Cycle Calculator

Free sleep cycle calculator: find the best time to wake up or go to bed using 90-minute cycles. Wake feeling refreshed. No sign-up.

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Water Usage Cost Calculator

Estimate your water bill from daily usage, local rate, and sewer fees. Plan household water costs quickly with this free water usage cost calculator.

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Algebra Calculator

Solve algebra problems step-by-step. Free online algebra calculator for equations, factoring, polynomials, and simplifying expressions for math students.

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Area & Perimeter Calculator

Calculate area and perimeter for any shape. Free geometry tool for rectangles, circles, triangles, and polygons with step-by-step formulas and solutions.

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Percentage Calculator

Calculate percentages easily. Free tool for finding percentage change, increases, discounts, and weighted averages. Instant accurate results for finance.

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Scientific Calculator

Advanced free online scientific calculator. Solve complex math problems with trigonometry, logarithms, exponentials, and statistical functions for students.

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Triangle Calculator

Solve triangles and calculate all properties including sides, angles, area, perimeter, base, and dimensions. Includes formulas and step-by-step solutions.

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Unit Circle Calculator

Interactive unit circle calculator. Find exact Sin, Cos, and Tan values for any angle in degrees or radians. Master trigonometry with this free visual tool.

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science

Classical Mechanics Calculator

Solve physics problems for force, motion, and energy. Free classical mechanics calculator using Newton's laws for students and engineering professionals.

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science

Pressure Vessel Calculator

Calculate minimum required wall thickness & Maximum Allowable Working Pressure (MAWP) for cylindrical & spherical vessels per ASME Sec VIII Div 1 (UG-27).

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science

Wire Gauge Calculator

Calculate appropriate wire gauge (AWG), amps, and voltage drop. Free electrical wire size calculator for DC and AC circuits ensuring safety and efficiency.

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Ambient Sound Player

Free ambient sound player online with nature sounds, white noise, and focus music. Perfect for concentration, sleep, and productivity. No signup required.

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Background Remover

Free online background remover. Remove bg from photos in your browser—no upload, no signup. Download PNG, JPEG, or WebP. Private and secure.

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Color Palette & Display Tester

Comprehensive monitor test suite: check for dead pixels, backlight bleed, IPS glow, OLED burn-in & motion ghosting. Free diagnostics for all screens.

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Days Until Calculator

Count down to any future event. Calculate days, weeks, months until weddings, vacations, birthdays, and important milestones.

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Emergency Relocation

Compare move-now vs stay after job loss: forecast runway, insolvency timing, and minimum savings to relocate safely.

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Encode & Decode Tool

Secure text encoder and decoder tool. Convert Base64, URL encoding, MD5, and SHA-256 hashes instantly. Free reliable tool for developers and security testing.

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Epoch Time Calculator

Convert Unix timestamps to dates and back. Free epoch time converter with timezone support, milliseconds, and developer cheat sheet.

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Image Resizer

Free online image resizer. Resize to exact pixels in your browser—no upload, no signup. Fit, crop, or stretch. Download PNG, JPEG, or WebP.

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IPv4 Subnet Calculator

Free IPv4 and CIDR calculator: subnet mask, network, broadcast, IP range, wildcard, and hosts. Includes /31 and /32 point-to-point links.

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IPv6 Subnet Calculator

Free IPv6 CIDR calculator: prefix, address range, subnet sizing (including /64), compressed or expanded notation.

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Multi-Tap Phone Decoder

Decode multi-tap keypad codes to letters (222 22 2 = CBA) or encode text to digits. Free browser tool for SMS puzzles, ITU layouts, and escape rooms—no signup.

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Number Base Converter

Convert numbers between Binary, Decimal, Hexadecimal, and Octal instantly. Free base converter tool with bitwise operations for programmers and students.

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PDF to Text Converter

Free PDF to text converter. Extract or copy text from PDFs online—no upload, runs in your browser. OCR for scanned PDFs. Private and secure.

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QR Code & Barcode Generator

Create custom QR codes and barcodes instantly. Free generator supporting URLs, text, Wi-Fi, and 10+ barcode formats. Download high-quality images for print.

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Random Number Generator

Generate truly random numbers with advanced statistics. Choose from cryptographic, LCG, or standard algorithms. For games, research, and decision-making

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Random Text Generator

Generate random text, Lorem Ipsum, passwords, and test data instantly. Free online tool for developers to create placeholder content and secure strings.

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Text Analyzer

Free online text analyzer & word counter. Check character count, Flesch-Kincaid readability scores, and keyword density to improve SEO and writing quality.

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Time Zone Meeting Planner

Plan meetings across global time zones with overlap finder, fairness scoring, DST-aware recurring schedule previews, and ICS export.

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