Toolog (English)

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

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 domestic or international phone numbers, emails, card numbers, account-like numbers, and Korean ID-style candidates in your browser before sharing.

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, and pickup 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, 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

Enter a grocery list, estimated prices, and a budget to split must-buy and optional items, check the over-budget amount, flag missing prices, and find candidates to cut.

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 owner hints, due-date hints, decisions, and open questions into a browser-side follow-up checklist.

Lifestyle/Emergency Bag

Emergency Bag Checklist Planner

Build an emergency bag checklist based on family members, pets, medicine needs, evacuation time, and season.

Lifestyle/Movie Seat Choice

Movie Theater Seat Choice Simulator

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

Lifestyle/Customer Support

Customer Support Message Generator

Enter a product or service, issue, desired resolution, and order details to generate a polite support message.

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, and www links from text in your browser, remove duplicates, strip tracking parameters, and organize links by domain.

Lifestyle/Secondhand Scam Check

Secondhand Scam Signal Checker

Enter listing conditions and seller behavior to quickly review warning signs like full prepayment requests, unrealistic pricing, and refusal of protected payment.

Text/Date Cleanup

Date Format Normalizer

Convert mixed dates such as yyyy-mm-dd, May 4, 2026, 20260504, and 05/10/2026 into one consistent style with ambiguous slash dates flagged.

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 when to start getting ready and when to leave based on appointment time, travel time, prep time, weather, and location familiarity.

Text/Security Check

Password Strength Checker

Check short length, character mix, repeated characters, sequential patterns, common words, and year-like numbers 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, separators, and numbering into cleaner 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 text when you typed Korean with an English keyboard layout or English with a Korean layout.

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 direct phrasing, repeated apologies, request clarity, deadline mentions, and message length in work messages and email drafts.

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.

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 text into quick Romanized output.

Text/Security Check

Privacy Exposure Checker

Find phone numbers, emails, ID-like patterns, card/account-style strings, and link prompts 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 suggestions instantly.

Text/Editing

Readability Checker

Check long sentences, dense paragraphs, repeated expressions, and line-break density to make text easier to read.

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 and break minutes to calculate elapsed time, total minutes, decimal hours, and net time instantly.

Data/Math

Average Calculator

Calculate average, median, sum, minimum, maximum, and range from a number list, with non-number entries counted as ignored.

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

Pick random winners without duplicates from a participant list and winner count.

Lifestyle/Fees

Parking Fee Calculator

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

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

Keep your study/work rhythm with automatic focus-break cycles using a customizable Pomodoro timer.

Health/Fitness

Body Fat Calculator

Estimate body fat percentage, fat mass, and lean mass instantly using the U.S. Navy method.

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, and repayment types from loan 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, and readability options.

Image/Graphics

PNG Compressor

Compress PNG/JPEG/WebP images in your browser with format output, quality control, preview, savings stats, transparency notes, and safer file guidance.

Image/Graphics

Image Resizer

Resize photos for Instagram, blogs, and OG cards with crop or padding, WebP, PNG, JPEG, quality control, and safer size checks.

Image/Graphics

YouTube Image Kit Maker

Generate YouTube thumbnail, Shorts cover, banner, icon, and watermark from one image as WebP, PNG, or JPEG, with source size and total output size checks.

Image/Graphics

Image Upscaler

Upscale PNG, JPEG, or WebP images by 2x, 3x, or 4x with sharpening and noise reduction in your browser.

Text/Editing

Font Style Converter

Convert plain text into multiple Unicode font styles in real time, then copy one style or all visible candidates.

Text/Editing

Banned Word Checker

Scan text in real time for spam, overclaim wording, abuse patterns, and risky external-link signals.

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, snake_case, and kebab-case with compound-word splitting and result copying.

Data/Utilities

JSON Merge for Arrays and Objects

Merge JSON arrays and objects in your browser, remove duplicate items, review key conflicts, and download the result.

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

Instantly convert length, weight, and temperature units including mm, miles, kg, lb, °C, °F, and K.

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

Calculate two fractions exactly and instantly see simplified, mixed-number, decimal, percent, and input error results.

Lifestyle/Billing

Split Bill Calculator

Split a total bill by group size and rounding unit, with last-person adjustment to keep the total exact.

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 and time to calculate average speed, pace per kilometer, and estimated 5K/10K times.

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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