Bill splitting, currency, dates, health and unit conversions in one place.
Split group bills effortlessly with smart receipt scanning and itemization.
Generate random Lotto 6/45 combinations with include and exclude filters.
Find and copy special symbols and emojis instantly from curated categories.
Calculate discount prices, rates, and original prices while comparing shopping deals.
Convert m² to Pyeong and explore common Korean apartment floorplans.
Check provider-supplied gold prices and estimate values for 24K, 18K, or 14K.
Accurately convert between Solar and Lunar dates with Ganji information.
Calculate the perfect tip and split the total among your group easily.
Estimate conversions with the latest reference rates supplied by the provider.
Convert between length, weight, area, and other units with instant results.
Calculate duration, math, and date intervals in one place.
Calculate your international age, Korean counting age, and year age.
Calculate BMI as a screening reference, not a medical diagnosis.
Estimate your BMR and activity-based daily energy use.
Calculate the power of compound interest for your savings and investments.
Create unique nicknames using combinations, pure Korean words, or custom filters.
Count characters, words, sentences, and bytes with real-time analysis and formatting.
Calculate the human equivalent age of your pet.
Estimate net salary using key 2026 Korean tax and insurance assumptions.
Calculate your weighted average grade based on high school transcript standards.
Calculate travel costs based on car model, fuel prices, and distance.
Splitting a bill evenly works until someone skipped the drinks, joined late or paid for everyone. Separating shared items from personal ones solves most of it; here is how, with real numbers.
Since June 2023 Korea uses international age by default, yet buying alcohol, military service and school entry still count by birth year. Here is a clear guide to which age applies where.
You wrote exactly 1,000 characters and the application site still says you are over the limit. The reason is usually a different counting rule. Here is how each rule works, how to detect the one a site uses and how to fit your text.
The rate in the news, the rate you get at the bank and the amount on your card statement are all different. This guide compares cash exchange, prepaid travel cards, credit cards and ATMs, and explains why paying in your home currency abroad is the costliest choice.
Distance, fuel economy and the price per liter are all you need to estimate a road trip's fuel bill. Using a Seoul to Busan example, this guide shows the formula, why real costs run higher and how to split costs with passengers.
A Korean high school grade average is weighted by each subject's credit units. This guide explains the calculation, compares the 9-level system with the 5-level system introduced for first-year students in 2025, and shows why raw scores and achievement levels matter too.
Util-Tools is a collection of free online utilities that work without installation or account registration. It is designed for small but frequent tasks such as splitting bills, estimating travel costs, checking exchange rates, converting units, and calculating dates.
Each tool calculates results immediately from the values you enter. When possible, results are based on official standards or commonly used formulas. Results are provided for reference, and important decisions involving taxes, health, or contracts should be checked with an official source or professional.
The site is built to work quickly on both mobile and desktop, while minimizing the need to enter personal information. Features that require server processing, such as receipt analysis or share links, are used only for their intended purpose.
Handle money-related calculations such as bill splitting, tips, discounts, and compound interest quickly.
Check everyday values such as BMI, BMR, age, and pet age with simple inputs and clear results.
Use practical tools for currency, units, pyeong, lunar dates, special characters, and word counts in one place.
Suggestions for new tools and bug reports can be sent through the contact page. We continue improving the service around small problems that real users encounter often.