Area Converter (www.oh-benri-tools.com)
An online tool for converting area units. Supports numerous units including square meters, square kilometers, and tatami mats, with customizable significant figures and rounding methods. Also supports area comparisons with familiar landmarks.
BMI Calculator (www.oh-benri-tools.com)
An online tool that calculates BMI by dragging sliders for height and weight. Displays body type classification in real time, with an option to download the result as an image.
Calculator (www.oh-benri-tools.com)
An online calculator for performing arithmetic calculations in a browser. Supports mouse or keyboard input, and multiple calculators can be used simultaneously. Also supports automatic sum and average calculation across multiple instances.
Length Converter (www.oh-benri-tools.com)
An online tool for converting length units. Supports numerous units including km, cm, mm, inches, feet, miles, and light years, with customizable significant figures and rounding methods.
Weight Converter (www.oh-benri-tools.com)
An online tool for converting weight units. Results in multiple units are displayed instantly after input, with customizable significant figures and rounding methods.
Character Counter (www.oh-benri-tools.com)
An online tool for counting characters in text. Supports drag-and-drop file input and multiple counting methods, including handling of newlines and double-byte characters. Includes conversion to manuscript page equivalent.
English Word Counter (www.oh-benri-tools.com)
An online tool for counting words, sentences, characters, and lines in English text. Supports file drop or direct text input, and input content is not sent to the server.
Password Generator (www.oh-benri-tools.com)
An online tool for generating large numbers of random passwords. Individually configure uppercase letters, lowercase letters, numbers, and symbols, and adjust length and count with sliders. Bulk download as a text file is also available.
QR Code Generator (www.oh-benri-tools.com)
An online tool for generating QR codes from text in real time. Adjust size and error correction level (L/M/Q/H) with a slider, and save the generated QR code as an image.
Calendar (www.oh-benri-tools.com)
An online calendar for viewing monthly or yearly views. Supports Japanese public holidays, customizable week start day, and fullscreen display. Choose from 1-month, 2-month, or yearly views.
Clock (www.oh-benri-tools.com)
An online clock that displays the current time. Shows accurate time and supports display format switching and fullscreen view.
Repeat Timer (www.oh-benri-tools.com)
An online timer that automatically restarts when it reaches zero. Ideal for interval training or recurring task breaks, with alarm sound and fullscreen display support.
