한국어

Tools

Use public tools other people built, and star the ones worth keeping.

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Built-in tools

31 tools

Reduce Photo Size

Shrink photos to a target file size (KB) or pixel width — entirely in your browser.

Merge Photos

Combine two or more photos into one image — stacked vertically, side by side or in a grid, with your own spacing, background colour and output width.

Hide Sensitive Info

Blur or pixelate faces, names, phone numbers and card numbers before sharing a photo.

Blur Background

Blur the background of a photo so the person or object stands out — blur everything in one tap, then rub the subject back into focus.

ID Photo Maker

Crop a photo to passport, visa or ID-photo specs and export it at the exact pixel size for 300 dpi printing.

Age Calculator

Turn a birthday into your exact age, next birthday countdown and total days lived.

Date Calculator

Count the days between two dates, or add and subtract days, weeks, months and years and see the resulting weekday.

Time Calculator

Time difference between two clock times, adding and subtracting hours and minutes, and worked hours minus breaks — as HH:MM and decimal hours.

D-Day Counter

Count the days until a target date as D-N, D-DAY or D+N, and keep a list of events saved in your browser.

Unit & Ratio Calculator

Solve A : B = C : ?, scale a ratio by N, and convert length, mass and volume units with exact standard factors.

Pyeong ↔ m² Converter

Convert Korean pyeong to square metres and back exactly. Built on 1 pyeong = 400/121 m² (about 3.305785 m²), with one-tap chips for 18/24/32/34/45 pyeong and 59/74/84 m².

Take-Home Pay Calculator

Work out your monthly take-home pay after the four social insurances and income tax, with every deduction itemised.

Weekly Holiday Pay Calculator

Turn your contracted weekly hours and hourly wage into weekly holiday pay, holiday hours, the weekly total, a monthly equivalent and your effective hourly rate.

Severance Pay Calculator

Turn your hire date, leave date and last three months of pay into Korean severance pay, before and after retirement income tax.

Annual Leave Calculator

Work out the annual leave you have accrued, what is left, and the unused-leave allowance from an hourly or monthly wage.

Overtime & Holiday Pay Calculator

Turn an hourly wage or monthly salary into Korean overtime, night and holiday premiums, with the total labour cost and effective hourly rate.

Minimum Wage Calculator

Convert the 2026 minimum hourly wage and your contracted weekly hours into a daily, weekly and monthly wage (on the 209-hour basis) and check whether your rate falls below the minimum.

Hourly ↔ Monthly ↔ Annual Pay

Convert hourly, monthly and annual pay in one step — with the after-tax take-home once insurance and tax are applied. Includes the 2026 minimum wage preset.

VAT Calculator

Turn a VAT-exclusive supply value or a VAT-inclusive total into the VAT, the supply value and the total, laid out in the lines a tax invoice needs.

Freelancer 3.3% Withholding Calculator

Work out the take-home pay on a Korean freelance contract after the 3.3% withholding — 3% income tax plus 0.3% local income tax — including when the small-amount rule drops the tax to zero.

Year-End Tax Refund Calculator

Enter your yearly gross salary and the tax already withheld to see whether you get a refund or owe more, recalculated with the 2026 basic tax rates.

Employer Payroll Cost Calculator

Enter a monthly wage and see what an employer actually pays: the employer share of the four insurances, the severance accrual and the annual payroll cost.

Comprehensive Income Tax Calculator

Enter yearly revenue and an expense rate or amount to get business income, tax base, income tax, local income tax and your effective rate.

Discount Calculator

Turn a list price into a final price — with stacked discounts, VAT on top and reverse pricing from a sale price.

Split the Bill

Divide a bill per person, add a tip, round the shares up to clean amounts, or settle item by item.

Savings Interest Calculator

Work out gross interest, the withholding tax and the after-tax payout for a lump-sum deposit or a monthly savings plan, on simple or compound interest.

Installment Calculator

Turn a price, term and annual rate into a monthly payment, total interest and a full month-by-month schedule.

Image Aspect Ratio

Crop a photo to 1:1, 4:5, 16:9 and more, with full control over position and zoom.

Social Media Image Sizes

Crop or pad one photo to the exact pixel size every platform wants: Instagram, YouTube, X, Facebook, LinkedIn, TikTok and KakaoTalk.

Character Counter

Count characters with and without spaces, words, lines, manuscript sheets and bytes (UTF-8, EUC-KR) the moment you type — for cover letters, blog posts and social media limits.

QR Code Generator

Turn a URL or text into a QR code and save it as PNG or SVG — right in your browser, with no install and no sign-up. Nothing you type is uploaded.