All tools › More Tools🧰 More Tools
Calculators, date and time, cheat sheets, classic reading and productivity — everything that fits nowhere else
The More Tools zone is the catch-all for handy utilities outside the vertical zones: calculators of every kind (percentage, loan, age, numeral base), date and time (timestamps, countdowns, world clock), daily lookups and productivity helpers, plus Classic Reading, the immersive library of public-domain Chinese classics.
Tools here are the same as everywhere else: no install, no sign-up, open and use, with data processed locally in the browser. For a specific domain, try its zone first; this is the grab-and-go fallback.
🧠 Mind Map (1 tools) Mind Map Draw mind maps with collapsible nodes and PNG export 📖 Classic Reading (1 tools) 🧮 Finance Calculators (32 tools) 🔄 Data Conversion (7 tools) ⚖️ Unit Conversion (52 tools) Percentage Calculator Ratios, growth rates and everyday percentage math Playback Speed Calculator Real watch time and time saved at any speed Basic Calculator Four-operation calculator with keyboard input and history Bandwidth Converter Convert bits/s to KB/s and MB/s Battery Life Estimator Estimate runtime from capacity and power draw Current Converter Amperes, milliamperes and CGS units Voltage Drop Calculator Cable voltage drop in percent, copper or aluminum, 1P/3P Voltage Divider Calculator Vout = R2-Vin/(R1+R2) with E12 resistor suggestions Power Converter Watts, kilowatts and horsepower Acceleration Converter m/s², g and Gal Angle Converter Degrees, radians and gradians Ring Size Converter Circumference to CN/US/EU ring sizes Base Converter (BigInt) Convert huge integers between bases 2-36 Coordinate Distance Great-circle distance between two coordinates Force Converter Newtons, kilogram-force, pound-force and dynes Torque Converter N·m, kgf·m and lbf·ft Flow Rate Converter L/s, m³/h and gpm Roman Numeral Converter Convert between Arabic numbers and Roman numerals Density Converter kg/m³, g/cm³ and pounds per cubic foot Area Converter Square meters, hectares, mu and square feet Energy Converter Joules, calories and kilowatt-hours Ohms Law Calculator Enter any two values to get voltage, current, resistance, power Cooking Converter Cups, tablespoons, teaspoons and milliliters for baking Frequency Converter Hz, kHz, MHz and rpm PPI Calculator Pixel density, dot pitch and aspect ratio from resolution and size Sunrise & Sunset Sunrise and sunset times for any date and place Resistor Color Code Read 4/5-band resistor values with tolerance Time Unit Converter Seconds, minutes, hours, days, weeks and years kVA & Power Factor Interconvert kW, kVA and amps with capacitor advice Number Formatter Thousands separators, percentages and scientific notation Speed Converter m/s, km/h, mph and knots Volume Converter Liters, milliliters, cubic meters and gallons Astronomical Distance Light years, astronomical units and parsecs Bitwise Calculator AND, OR, XOR, shifts with binary and hex views Temperature Converter Celsius, Fahrenheit and Kelvin Download Time Calculator Estimate file download time from bandwidth Pressure Converter Pascal, kilopascal, bar and atmospheres Typography Converter px, pt, em and inch for print and web Fuel Consumption Converter L/100km, mpg and km/L Ones/Two Complement Show sign-magnitude, ones and two complement in 8/16/32 bits Length Converter Meters, kilometers, inches, feet, li and more Illuminance Converter Lux and foot-candles Weight Converter Kilograms, pounds, ounces, jin and more Data Size Converter Bits, bytes, KB, MB, GB and TB Coordinate Format Converter Convert decimal degrees to and from DMS AWG Wire Gauge Chart Diameter, area, resistance and ampacity for AWG 4/0-40 dBm to Watts Convert dBm to W and mW logarithmic power GPA Calculator Compute your GPA from course grades mAh to Wh Converter Battery charge and energy, plus runtime estimate PPM Converter ppm, ppb and percentage concentrations px to rem Convert px, rem, em and percentages for CSS layout SI Prefix Converter Mega, kilo, milli, micro, nano and friends ⚡ Productivity (11 tools) 🐟 Work Slacking (11 tools) ➗ Math Tools (20 tools) Proportion Calculator Solve the missing term of a proportion Fraction Calculator Add, subtract, multiply, divide and reduce fractions Factorial Calculator Exact factorial up to 3000! Solid Volume Calculator Volume and surface area of boxes, cylinders, spheres, cones Number Sequence Generator Generate arithmetic sequences with optional zero padding Pi by Monte Carlo Watch random dots estimate pi with animation Descriptive Statistics Mean, median, variance and quartiles in one click Permutations & Combinations A(n,m), C(n,m) and large factorials Triangle Calculator Area and angles from three sides, Pythagorean theorem Sequence Calculator Arithmetic and geometric sequences, terms and sums Math Expression Calculator Evaluate arithmetic with powers and parentheses Prime Number Tools Primality test, counting and neighboring primes Determinant Calculator Determinants of 2x2 and 3x3 matrices Quadratic Solver Roots, discriminant and vertex, complex roots included Circle Calculator Circumference, area and diameter from radius Digits of Pi Compute the first 10,000 digits of pi, search your birthday Function Plotter Plot y = f(x) interactively with zoom and pan Prime Factorization Break an integer into prime factors Duplicate Finder Find list rows that appear more than once GCD & LCM Greatest common divisor and least common multiple 📇 Reference Tables (44 tools) 985/211 Universities Chinas Project 985, 211 and Double First-Class universities Hundred Family Surnames The classic text, top 100 surnames Gemstone Meanings Meanings, care and hardness of 30 gemstones Tea Brewing Guide Water temperature and steeping by tea type China Hotline Numbers Emergency, carrier and courier service numbers License Plate Regions Which city each Chinese plate prefix belongs to Idiom Dictionary Definitions of common Chinese idioms Tech Abbreviations KPI, MVP, CRUD and other workplace jargon 24 Solar Terms Dates and meanings of the traditional terms Flying Flower Game Find poem lines containing a keyword, 13 sets Cash Gift Guide Customary gift amounts by relationship in China Country Codes ISO codes and calling codes of all countries Language of Flowers Meanings and gifting taboos of 40 flowers Wedding Budget Split Allocate a total budget across seven categories Traffic Penalty Reference Points and fines for common violations Wedding Anniversary Names Paper to diamond, the name of every year Waste Sorting Guide Recyclable, kitchen, hazardous or residual, Chinese cities Chinese Dynasties Start and end years from Xia to Qing Cat Breed Guide Coat, weight, temperament and shedding of 28 breeds Age Terms in Classics Chuai, Ruoguan, Erli and other classical age terms Cooking Time Chart Boil, steam and braise times for 32 ingredients China Area Codes & ZIPs Phone area codes and postal codes by city Dog Breed Guide Size, weight, temperament and lifespan of 30 breeds Birth Flowers & Stones Birthstone and flower for every month China Province Abbreviations All 34 provincial regions with abbreviations Poem Search Search textbook classics and famous lines Twelve Time Periods Ancient Chinese shichen to modern hours Food Glycemic Index GI values of 37 foods for blood sugar control World Capitals Capitals of major countries by continent Number Slang What 520, 886, 996 and 74 more mean Chinese Internet Slang 113 trending slang terms explained Physics Formulas Mechanics, electromagnetism and thermodynamics reference Greek Alphabet All 24 letters with cases and pronunciation Two-Part Allegorical Sayings Classic Chinese xiehouyu, first half to second half 5A Scenic Areas Chinas national 5A tourist attractions list Blood Sugar Chart Normal fasting and post-meal glucose ranges Blood Pressure Chart Hypertension grades and when to see a doctor Kaomoji Collection 180+ Japanese emoticons by mood, click to copy Periodic Table All 118 elements with symbols and atomic masses Sports Calorie Chart Calories burned per hour by 38 activities Traditional Chinese Colors 163 traditional colors with hex values Copybook Generator Printable Chinese calligraphy practice sheets Emoji Meanings Official names and usage of 130 emoji Web Safe Colors The 216-color safe palette, click to copy FAQ Why is it called More Tools? Site tools are grouped into scenario zones; anything without a clear vertical home lands here so good tools never get buried.
Will tools move out later? Yes. When a group grows large enough with a clear scenario, it becomes its own zone; the zone list stays small and focused.
Cannot find a tool? Search by name or pinyin from the top bar, or post feedback in the message center — many tools were built from user requests.
Browse all 1094 free online tools