Travel Itinerary Maker
Create a travel booklet with cover, schedule, packing list, and emergency contacts, then print it as an A4 booklet. No sign-up; data stays on your device.
Online Ruler
An online ruler tool that calibrates your screen to actual size using a credit card to measure real-world lengths.
Vocal Range Tester
Real-time vocal range measurement using microphone
Bicycle Gear & Speed
Calculate speed from teeth and cadence
Baker's Percentage Calc
Auto calculate ingredient ratios for baking bread
BAC Calculator
Calculate time to sober up from alcohol consumption
TRPG 3D Dice Roller
Visually roll dice like 1d100, 1d20, 2d6 for TRPGs
Prompt Gacha Slot
Randomly generate drawing or writing prompts
Maze Generator
Generate random printable mazes with custom difficulty
Stopwatch
Stopwatch with millisecond precision
BMI Calculator
Instantly calculate BMI, obesity level, and ideal weight
Calorie Calculator
Calculate BMR, TDEE, and goal calories instantly
Sleep Cycle Calculator
Calculate optimal sleep and wake times
Unit Converter
Convert 150+ units across length, weight, temperature, area, volume
Cooking Unit Converter
Convert cups to grams with ingredient-specific density
Postal Code Lookup
Convert postal codes to addresses instantly, no API required
Concert Fan Builder
Design print-ready concert fan text
Breathing Exercise Timer
Practice 4-7-8 and box breathing with guided animation
Guitar Chord Randomizer
Generate and listen to random guitar chord progressions
Grade Calculator
Calculate GPA, final grade needed, and simple averages
Other Categories
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