Amidakuji (Ghost Leg)
Set the results first, add names later, and reveal a long, winding ghost-leg lottery.
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HAPPY Tools
Fun & Handy Web Tools
A collection of tools that make everyday life a little more fun and convenient.
Explore a wide range of utilities and enjoy discovering something new.
TOOLS109
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Showing 109 of 109
24-Hour Day Chart
Enter how you spend your 24 hours and show it as a pie, donut, bar, stacked band, or 24-cell chart.
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Mic Test
Check that your microphone is detected and picking up sound with a level meter and a record-and-playback test.
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Bill Splitter
A bill-splitting calculator with equal split, custom split, and IOU settlement modes.
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Profile Card Maker
Enter your name, title, bio, and social accounts to make an original profile card.
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Password Generator
Generate strong, alphanumeric, PIN, HEX, and other passwords in bulk.
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Image Format Converter
Convert images between PNG, JPEG, WebP, and more in your browser.
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World Time Zones
See the current time in major cities and how far ahead or behind Tokyo they are.
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Brain Rot Name Converter
Turn a name into an addictive-sounding brain rot name and hear it read aloud.
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Pixel Art
A pixel art tool where you mark needed cells in black and unneeded ones in light gray.
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Endless Bubble Wrap
Tap to pop bubble wrap that never ends — with sound and vibration. Scroll down for endless new bubbles.
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Focus Timer
Splits work and breaks like 25 min + 5 min, runs automatically, and counts and records the rounds you finish.
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Team Splitter
Paste a name list, set the number of teams, and get a random split with evenly sized teams.
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Unit Converter
Convert Japanese and international units at once, including tsubo, tatami, inches, pounds and Fahrenheit.
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