Toolog (English)

Check items, materials, contamination, labels, caps, and special conditions to organize recycling, rinsing, separation, trash-disposal steps, and item-specific review flags.

Lifestyle/Pet Care Notes

Pet Care Note Generator

Create a clear handoff note for family or pet sitters with meals, walks, medicine, cautions, and contacts.

Work/Privacy Masking

Privacy Masker

Paste text and mask phone numbers, emails, card numbers, account-like numbers, and Korean ID-style candidates in your browser while reviewing detections and missed-risk limits.

Work/Shortcut Practice

Shortcut Key Practice Quiz

Practice common browser, editing, and system shortcuts with quick quizzes and review the shortcuts you missed.

Shopping/Online Return Prep

Online Return Package Checker

Build a return-prep checklist for photos, components, packaging, pickup, and condition checks based on items, reason, deadline, and package state.

Lifestyle/Rainy Day Outing

Rainy Day Outing Planner

Plan what to bring for a rainy-day outing based on rain intensity, transport, outing length, shoes, and bag protection.

Lifestyle/Evening Routine

After-Work Evening Routine Picker

Pick an evening routine after work based on remaining time, energy, must-do tasks, mood, and your preferred goal for tonight.

Work/Cafe Seat Choice

Cafe Work Seat Simulator

Compare cafe seat candidates for laptop work or study by outlet access, noise, lighting, traffic flow, and stay length.

Work/List Formatting

List Format Converter

Paste a plain line list and convert it into CSV, a Markdown table, a JSON array, or a numbered list for quick copying.

Lifestyle/Group Announcements

Group Announcement Generator

Create a clean group chat or message announcement from the event type, date, place, items to bring, and tone.

Food/Grocery Budget

Grocery Budget Checker

Paste a grocery list with estimated prices and a budget to review must-buy items, optional items, budget usage, after-must-buy balance, missing prices, duplicates, and cut candidates.

Lifestyle/Recycling Practice

Recycling Sorting Practice

Practice confusing household waste sorting with quick quizzes across paper, plastic, cans, glass, food waste, and general trash.

Work/Meeting Notes

Meeting Action Item Extractor

Paste meeting notes or chat logs to extract owners, due dates, decisions, open questions, and review points into a checklist, share note, or Markdown table.

Lifestyle/Emergency Bag

Emergency Bag Checklist Planner

Build a 24-72 hour emergency bag checklist from household size, pets, medicine needs, season, and items already prepared.

Lifestyle/Movie Seat Choice

Movie Theater Seat Choice Simulator

Compare movie seat candidates before booking by screen distance, center position, aisle access, group size, and viewing preference.

Lifestyle/Customer Support

Customer Support Message Generator

Generate polite customer support messages for refunds, exchanges, delivery delays, billing problems, and app errors from issue details, desired resolution, and optional order info.

Food/Fridge Cleanup

Ingredient Expiry Priority Checker

Enter ingredients, days left, storage condition, amount, and plan to see what to use first and how to reduce waste.

Lifestyle/Chore Sharing

Household Chore Picker

Enter people and chores to quickly split dishes, cleaning, laundry, and other household tasks by random or balanced rules.

Text/Link Cleanup

Link List Cleaner

Extract http, https, www, and Markdown links, remove duplicates, strip UTM tracking and page anchors, sort by domain, and copy as Markdown, HTML, or CSV.

Lifestyle/Secondhand Scam Check

Secondhand Scam Signal Checker

Review warning signs before a secondhand deal, including unrealistic pricing, prepayment demands, refusal of protected payment, off-platform contact, new accounts, and verification avoidance.

Text/Date Cleanup

Date Format Normalizer

Convert mixed dates such as yyyy-mm-dd, Korean date text, May 4th, 2026, 20260504, and 05/10/2026 into one style while reviewing invalid dates, ambiguous slash dates, and before/after examples.

Study/Work Communication

Workplace Honorific Practice

Practice workplace honorific phrasing with short two-choice scenarios and instant explanations.

Work/Priority Planning

Priority Decision Matrix Planner

Add up to five tasks or options, rate urgency, impact, effort, and confidence, then quickly see what should come first.

Career/Interview Practice

Interview Follow-up Question Generator

Generate five likely interview follow-up questions and answer points from your role, seniority, interview type, and core answer.

Lifestyle/Trip Prep

Appointment Departure Buffer Simulator

Simulate prep start, leave-home time, and arrival target from appointment time, travel time, prep time, transfers, weather, unfamiliar places, and packing needs.

Text/Security Check

Password Strength Checker

Check short length, character mix, repeated or keyboard patterns, common words, year-like numbers, space handling, and guessing-time hints in your browser.

Lifestyle/Gift Choice

Gift Idea Picker

Choose the recipient, occasion, budget, vibe, and prep speed to get 5 practical gift ideas with quick reasons.

Text/File Naming

Filename Sanitizer

Paste titles or file names to normalize spaces, special characters, extensions, date prefixes, numbering, long names, and duplicate candidates into safer copy-ready file names.

Work/Schedule

Deadline Backward Planner

Build a backward plan from the due date using estimated work hours, daily focus capacity, and review buffer days.

Text/Converter

Hangul Keyboard Layout Converter

Recover mistyped Korean or English keyboard-layout text with line-by-line auto detect, manual direction, and browser-only conversion.

Lifestyle/Secondhand Trading

Secondhand Price Message Generator

Create polite secondhand trading messages for price offers, accepting or declining negotiation, hold requests, and bundle deals.

Work/Communication

Message Tone Checker

Check work email, Slack, Teams, and chat drafts before sending for blunt wording, repeated apologies, request clarity, timing cues, punctuation pressure, long lines, and length burden.

Study/Korean Writing

Korean Spelling Practice

Practice common Korean spelling and spacing mistakes with short two-choice quizzes, instant explanations, and missed-question review.

Work/Meeting Follow-up

Meeting Action Item Organizer

Paste meeting notes, decisions, and requests to turn them into copy-ready action items, follow-up checks, and share notes.

Lifestyle/Trade Prep

Secondhand Trade Checklist Planner

Build a step-by-step checklist for secondhand listings, meetup prep, and shipping prep based on item type, trade method, packaging difficulty, and testability.

Budget/Subscriptions

Subscription Cleanup Priority Simulator

Rank subscriptions by keep, pause, or cancel priority using price, usage frequency, replacement options, work need, and next billing date, with input checks and urgent billing flags.

Lifestyle/Cooking Choice

Fridge Ingredient Menu Picker

Turn ingredients at home, meal timing, cooking time, and tools into quick menu ideas you can actually make now.

Text/Converter

Korean Name Romanizer

Convert Korean names, place names, brand names, and short Hangul text into Romanized drafts with spacing, hyphen, case, surname candidates, and registered-spelling comparison.

Text/Security Check

Privacy Exposure Checker

Find phone numbers, emails, ID-like patterns, card/account-style strings, links, and messenger IDs in drafts before sharing.

Work/Communication

Schedule Coordination Message Generator

Create clear and polite time proposal messages for meetings, appointments, interviews, or consultations in seconds.

Work/Travel Prep

Business Trip Checklist Planner

Build a copy-ready business trip packing checklist based on trip length, transport, baggage style, climate, and meeting needs.

Text/Utility

Text Line Break Cleaner

Clean pasted text by fixing awkward line breaks, extra blank lines, bullet styles, and repeated spaces in one pass.

Work/Productivity

Remote Work vs Commute Cost Simulator

Compare commuting, meals, coffee, extra home-office costs, and travel time on a monthly basis to see which work style feels cheaper.

Study/Learning

Memory Quiz Generator

Paste prompt-answer pairs to create random quiz cards, reveal answers, self-mark results, and review missed items.

Lifestyle/Choice

Lunch Menu Picker

Pick meal time, budget, company size, and mood to get three fitting menu ideas with a copy-ready suggestion summary.

Text/Editing

Readability Checker

Check long sentences, dense paragraphs, repeated wording, line-break density, and mobile readability signals to make text easier to scan.

Lifestyle/Preparation

Move Checklist Planner

Build a move checklist organized by two weeks before, three days before, and move day from your move date and setup.

Work/Productivity

Meeting Agenda Generator

Generate a ready-to-share meeting agenda draft from meeting type, duration, goal, and key topics.

Life/Settlement

Ratio Split Calculator

Split a total amount by custom ratios and calculate allocations, percentages, and final rounding adjustment.

Finance/Business

Goal Savings Timeline Calculator

Estimate how many months it takes to reach your savings goal from current savings, monthly contributions, and annual interest.

Auto/Cost

Fuel Economy Calculator

Calculate fuel economy in km/L, fuel use per 100km, total fuel cost, and cost per km from distance and fuel volume.

Shopping/Comparison

Unit Price Calculator

Compare value by price per item, per 100g, and per liter from total price and quantity.

Schedule/Productivity

Time Difference Calculator

Enter start/end times, break minutes, and next-day mode to calculate elapsed time, total minutes, decimal hours, net time, and date handling instantly.

Data/Math

Average Calculator

Calculate average, median, sum, range, quartiles, and standard deviation from a number list, while handling thousands separators, currency symbols, and ignored text.

Finance/Business

Hourly to Monthly Salary Calculator

Estimate weekly, monthly, and annual gross pay from hourly wage, weekly hours, and workdays, with optional weekly holiday pay.

Schedule/Productivity

Lucky Draw Picker

Paste participants, remove blank and duplicate entries, draw random winners in your browser, and copy the numbered result.

Lifestyle/Fees

Parking Fee Calculator

Estimate parking fees from parking time, base/extra pricing, daily cap handling, and optional discounts.

Finance/Business

Savings Interest Calculator

Calculate pre-tax/after-tax interest and maturity amount from deposit, rate, term, and tax mode (simple or monthly compound).

Schedule/Productivity

Work End Time Calculator

Calculate estimated clock-out time and total stay time from start time, work hours, and breaks.

Finance/Business

Profit Margin Calculator

Calculate cost ratio, margin ratio, profit, and suggested selling price from sales, cost, and target margin.

Schedule/Productivity

Pomodoro Timer

Start 25/5, 50/10, or custom focus, short-break, and long-break cycles with a task label and optional alert sound.

Health/Fitness

Body Fat Calculator

Estimate body fat percentage, fat mass, and lean mass from height, neck, waist, weight, and female hip measurement with safer range checks.

Real Estate/Finance

Jeonse vs Wolse Calculator

Compare total housing cost and break-even wolse rent using jeonse/wolse deposits, expected return, and stay period.

Shopping/Finance

Discount Calculator

Calculate final payable amount and effective discount using discount rate, coupon, quantity, and shipping.

Finance

Loan Repayment Calculator

Compare monthly payment, total interest, total repayment, and amortized vs equal-principal plans from amount, rate, and term.

Investment/Finance

Compound Interest Calculator

Calculate ending balance, total principal, estimated profit, and inflation-adjusted value with monthly contributions.

Real Estate/Finance

Real Estate Brokerage Fee Calculator

Estimate the legal maximum brokerage fee for home sales and leases based on transaction value.

Security/Accounts

Password Generator

Generate strong random passwords with length, character sets, website-friendly symbols, screen hiding, entropy, and strength estimates.

Image/Graphics

PNG Compressor

Compress PNG/JPEG/WebP images in your browser with format choice, quality control, preview, savings stats, transparency warnings, and 25MB/24MP guidance.

Image/Graphics

Image Resizer

Resize photos for Instagram, blogs, and OG cards with crop or padding, WebP, PNG, JPEG, quality control, mobile-safe limits, and clearer download states.

Image/Graphics

YouTube Thumbnail and Banner Maker

Create YouTube thumbnail, Shorts cover, banner, icon, and watermark files from one image as WebP, PNG, or JPEG, with GIF first-frame, large-file, and total size checks.

Image/Graphics

Image Upscaler

Upscale low-resolution PNG, JPEG, and WebP images with 1x enhancement or 2x/3x/4x enlargement, PNG quality notes, JPEG white-background handling, file-size warnings, and browser-only processing.

Text/Editing

Font Style Converter

Convert letters and numbers into Unicode font styles in real time, filter by style group, search style names, save favorites, and copy one style or all visible candidates for Instagram bios and social captions.

Text/Editing

Banned Word Checker

Scan text in real time for spam, overclaim wording, contact prompts, short links, hashtag stuffing, repeated-keyword density, and context-weighted writing risks.

Text/Editing

Text Counter

Count characters, words, lines, UTF-8 bytes, and check whether text exceeds a chosen limit.

Text/Editing

Case Converter

Convert UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, CONSTANT_CASE, and kebab-case with line-by-line conversion and result copying.

Data/Utilities

JSON Merge for Files, JSONL, Arrays, and Objects

Merge JSON files, pasted API responses, and JSONL logs in your browser with array concat, object-key merge, duplicate-removal counts, conflict checks, pretty/minified output, copy, and download.

Data/Finance

VAT Calculator

Calculate or reverse-calculate 10% VAT from net price or gross total with selectable whole-unit rounding.

Data/Utilities

Unit Converter

Convert length, weight, and temperature units with examples, unit swapping, result copy, and clear invalid-value guidance.

Data/Utilities

Timezone Converter

Convert Seoul, New York, London, LA, and other major time zones with DST transition error checks, UTC offsets, and date-shift checks.

Data/Math

Percent Calculator

Calculate percentages, ratios, and increase/decrease rates quickly in one place.

Real Estate

Pyeong Calculator

Convert m² and pyeong both ways and estimate price per pyeong for property comparison.

Schedule/Productivity

D-Day Calculator

Calculate remaining days, elapsed days, and optional business-day difference to a target date in one view.

Health/Fitness

BMI Calculator

Calculate BMI and healthy weight range from height and weight, with optional BMR estimate from age and sex.

Lifestyle/Date

Age Calculator

Calculate exact age, Korean counting age, total months lived, and days left until the next birthday.

Finance/Business

Salary Calculator

Estimate monthly and yearly take-home pay from annual salary, non-taxable income, and dependent information.

Finance/Business

Severance Pay Calculator

Estimate service days, average daily wage, and expected severance pay from employment dates, monthly salary, and bonus.

Investment/Finance

Stock Average Calculator

Calculate new average cost after additional buys and estimate shares needed to reach a target average price.

Health/Fitness

TDEE Calculator

Estimate BMR, TDEE, and daily calorie targets for cutting, maintenance, and bulking.

Finance/Business

Weekly Holiday Pay Calculator

Check paid weekly holiday eligibility and estimate weekly/monthly allowance from hourly wage and scheduled work hours.

Calculator/Lifestyle

Tip Calculator

Calculate tip amount, total bill, and per-person split with percentage or fixed-tip modes.

Logistics/Business

Volumetric Weight Calculator

Calculate volumetric weight and chargeable weight from box dimensions and actual weight.

Data/Math

Fraction Calculator

Enter an expression like 1/2 + 1/3 or fill fraction fields to calculate operations, simplification, mixed-number, decimal, percent, and input errors.

Lifestyle/Billing

Split Bill Calculator

Split a total bill by group size and rounding unit, with last-person adjustment and a copy-ready settlement message.

Education/Study

GPA Calculator

Calculate weighted GPA, graded credits, grade points, and pass/ignored credits from course credits and grades on 4.5, 4.3, or 4.0 scales.

Education/Study

Required GPA Calculator

Enter your current GPA, completed credits, target GPA, and remaining credits to calculate the GPA you need from now on.

Travel/Lifestyle

Average Speed Calculator

Enter distance, hours, or total minutes to calculate average speed, pace per kilometer, total time, and estimated 5K/10K times with safer input checks.

Lifestyle/Fees

Electricity Cost Calculator

Estimate daily, monthly, and yearly electricity cost from wattage, usage hours, days, and price per kWh.

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