The right tool, instantly. Utillica
Use calculators, converters, text tools and developer tools in one place — no installation needed.
Categories
Unit Converter
Convert length, weight, area and more
81 toolsCalculator
Ratio, finance and health calculators
128 toolsNetwork
IP, DNS and network tools
19 toolsRandom
Password, draw and random tools
24 toolsDeveloper
JSON, Base64 and hash dev tools
100 toolsText
Character count, case and text tools
51 toolsDate & Time
D-Day, age and date tools
41 toolsColor
HEX, RGB and color tools
24 toolsImage
Resize, compress image tools
64 toolsPopular tools
Korean Age Calculator — International (Man) Age
Enter a birth date to get the Korean legal (international) age under the 2023 age-unification law, and see how it differs from traditional Korean counting age.
Korean Net Salary Calculator — 2026 Take-Home Pay
Estimate monthly take-home pay in Korea: annual salary minus 2026 employee-side social insurance, plus your withholding tax from the NTS simplified tax table.
Pyeong to Square Meters (평 → m²) — Korean Apartment Size
Convert Korean pyeong to square meters. One pyeong is 400/121 m² ≈ 3.3058 m²; a 34-pyeong apartment is about 112.4 m².
Square Meters to Pyeong (m² → 평) — Korean Area Converter
Convert square meters to Korean pyeong. One square meter is exactly 0.3025 pyeong; an 84 m² apartment is about 25.41 pyeong.
What Is My IP Address
Instantly see your device's public IP address (IPv4/IPv6). Location and ISP are not shown.
Word Counter — Characters, Words, Bytes
Count characters, characters without spaces, words, lines and bytes of your text in real time — handy for social posts, essays and meta descriptions.
Percentage Calculator — X is what % of Y
Instantly calculate ratios (X is what % of Y), part values, discounts and percent change with this percentage calculator.
Password Generator — Secure Random Password
Generate secure random passwords and passphrases with length, character types, exclusions, and count options.
BMI Calculator — Body Mass Index
Calculate BMI from height and weight and see the category: underweight, normal, overweight, obese.
QR Code Generator — Text & URL to QR
Generate downloadable QR images for text, URLs, Wi-Fi, email, and phone values.