All Free Tools

24 Solar Terms Reference (二十四节气)

RT-CHN-015

Year → 24 节气 exact dates + times

Annual Luck Fortune (流年运势)

RT-CHN-056

Bazi vs annual Tai Sui · zodiac & 5-element interaction

ASEAN + APAC Phone Number Validator

RT-UTL-003

SG / MY / HK / TW / CN / PH / ID / TH / VN · format check

Auspicious Date Selector (黄道吉日)

RT-CHN-003

General 黄道吉日 picker

Baby-Parent Zodiac Compatibility (父母子女生肖)

RT-CHN-061

3-way zodiac · recommended baby zodiac years

Bagua House Analysis (八卦看屋)

RT-CHN-055

8-Mansion feng shui · life trigram + 8-zone home map · door direction

Bazi Chart Calculator (八字排盘)

RT-CHN-001

4-pillar birth chart + 五行 + 十神

Bazi Compatibility Match (八字合婚)

RT-CHN-002

Two charts → 3-axis compat

Bazi Ten Gods Analyzer (八字十神)

RT-CHN-057

4-pillar 十神 breakdown · 5-category distribution · interpretation

Business Opening Date Selector (开业吉日)

RT-CHN-006

宜开市/开张 + owner zodiac

Cantonese Jyutping Converter (粤拼)

RT-CHN-034

Hanzi → Jyutping · LSHK 1993 standard · 6 tones + IPA

Cantonese Yale Converter (耶鲁拼音)

RT-CHN-035

Hanzi → Yale · 1970s US standard · numeric + diacritic

Chi-Square Test Calculator

RT-CNV-091

Goodness-of-fit + independence

China Province Lookup (中国省份查询)

RT-CHN-069

33 provincial-level divisions · GB/T 2260 standard

China Resident ID Format Validator (中国身份证)

RT-CHN-068

18-digit ISO 7064 MOD 11-2 · region + birth + gender

Chinese Age Calculator (Nominal & Actual)

RT-CHN-011

虚岁 / 实岁 dual age

Chinese Baby Name Suggester (中文起名宝典)

RT-CHN-019

Curated character pool by element + stroke

Chinese Business Name Analyzer (公司起名笔画)

RT-CHN-020

1-81 数理吉凶 auspice analysis

Chinese Character Frequency (汉字使用频率)

RT-CHN-033

Top 200 high-frequency chars · Jun Da corpus · cumulative coverage %

Chinese Character Frequency (汉字使用频率)

RT-CHN-084

前 100 高频字 · 学中文优先顺序 · BCC 语料库

Chinese Chengyu Idiom Finder (成语词典)

RT-CHN-031

80 curated 4-character idioms · pinyin · classical origin · modern usage

Chinese Clan Generation Poem Lookup (字辈查询)

RT-CHN-074

30 major surnames' 字辈/字派 · root-tracing + naming

Chinese Color Symbolism (中国传统色彩文化)

RT-CHN-050

24 traditional colors · hex codes · cultural meanings

Chinese Date Format Converter (中文日期格式)

RT-CHN-030

4 formats: standard / written / lunar / 干支

Chinese Easily-Confused Characters (易混汉字)

RT-CHN-082

30 组 · 形近 + 同音 + 形音义混 + 简繁差异 · 含口诀

Chinese Folk Symbols Guide (中国民俗符号图鉴)

RT-CHN-053

18 auspicious symbols · meanings · classical origins

Chinese Homophones Finder (同音字查询)

RT-CHN-086

~20 音节 · 4 声分类 · 起名、写诗、避免歧义

Chinese Internet Slang Decoder (网络用语翻译)

RT-CHN-075

yyds / 666 / 内卷 / 躺平 · 50+ terms · 2000s-2020s

Chinese Kinship Calculator (亲戚称谓计算器)

RT-CHN-073

6 dialects · 拼音 / 粤拼 / 闽南罗马字 / 客拼 · up to 4 generations

Chinese Knot Pattern Guide (中国结图解)

RT-CHN-049

10 traditional knot patterns · cultural meanings · difficulty

Chinese Lucky Number Checker (吉祥数字)

RT-CHN-016

Number → per-digit lucky/avoid + score

Chinese Lunar Festival Calendar (中国传统节日历)

RT-CHN-045

11 major festivals · Gregorian dates · traditions

Chinese Measure Word Picker (量词选择器)

RT-CHN-076

70+ nouns → 量词 · 一本书 / 一只猫 / 一双鞋

Chinese Name 5-Grid Analyzer (姓名三才五格)

RT-CHN-018

天格・人格・地格・外格・总格 numerology

Chinese Number Culture (中国数字文化)

RT-CHN-052

18 numbers · homophones · luck ratings · cultural usage

Chinese Punctuation Converter (全角 ↔ 半角)

RT-CHN-038

Full-width ↔ half-width punctuation + ASCII

Chinese Punctuation Rules Checker (中文标点规范)

RT-CHN-077

GB/T 15834-2011 · auto-detect + auto-fix · ASCII → 全角

Chinese Rhyme Dictionary (押韵字典)

RT-CHN-079

平水韵 24 + 中华新韵 14 · 古典 + 现代诗词押韵

Chinese Stroke Order Animator (汉字笔顺动画)

RT-CHN-041

hanzi-writer-powered SVG · 9000+ chars · ARPHIC data

Chinese Surname Origin (百家姓查询)

RT-CHN-021

Top 50 surnames · clan history · diaspora romanisations

Chinese Tea Brewing Timer (中国茶冲泡计时器)

RT-CHN-044

六大茶类 · gongfu method · live countdown + audio beep

Chinese Text Cleaner (中文文本清洗)

RT-CHN-040

8 toggleable rules · OCR/clipboard cleanup · privacy-safe

Chinese Vertical Text Formatter (中文竖排)

RT-CHN-081

横排 → 竖排 · 右起 / 左起 · 标点旋转 90° 可选

Chinese Vertical Text Layout (中文竖排排版)

RT-CHN-039

Top-to-bottom, right-to-left classical layout + print

Chinese Wedding Bride Price (聘金计算)

RT-CHN-063

5 regions × 3 tiers · bride price + dowry + banquet

Chinese Zodiac Compatibility (生肖配对)

RT-CHN-007

Two birth years → 六合/三合/相冲

Chinese Zodiac Year Lookup (生肖年查询)

RT-CHN-014

Year → 生肖 + 干支 + 纳音

Chinese-English Idiom Bilingual Search (中英成语对照)

RT-CHN-078

60 chengyu · pinyin + literal + English equivalent (画蛇添足 = gild the lily)

Classical Chinese Glossary (文言文虚词词典)

RT-CHN-042

80 curated classical particles + function words

Classical Chinese Particle Helper (文言虚词)

RT-CHN-085

之乎者也矣焉 · 23 高频虚词 · 高考必备

Confidence Interval Calculator

RT-CNV-083

CI for mean + proportion

Correlation Calculator (Pearson + Spearman)

RT-CNV-099

r, p-value and 95% CI from paired data

Currency Notation Converter

RT-CNV-100

Lakh / crore ↔ million / billion ↔ 万 / 亿

Date Add/Subtract Calculator

RT-CNV-087

Date arithmetic + day of week

Date Difference Calculator

RT-CNV-085

Days/months/years between dates

Dim Sum Dish Guide (港式点心指南)

RT-CHN-048

50 classic HK dim sum · Jyutping · category · price tier

Effect Size Calculator (Cohen's d + Hedges' g)

RT-CNV-098

Cohen's d + Hedges' g

Family Tree Builder (家谱图生成器)

RT-CHN-072

Drag-and-drop tree · auto relationship labels · SVG / PNG export

Feng Shui Luopan Reader (风水罗盘)

RT-CHN-054

Digital luopan compass · 24 mountains + 8 trigrams · phone magnetometer

Five Elements Personality (五行格命)

RT-CHN-012

8 chars → 五行 distribution + 补救

Hanzi → Pinyin Converter (汉字拼音转换)

RT-CHN-022

Hanzi → 5 pinyin formats + polyphone

Hanzi Stroke Count Lookup (汉字笔画查询)

RT-CHN-025

Per-character stroke count + stroke-order SVG

HK Dollar Cheque Words

RT-CHN-028

HKD → Traditional Chinese cheque format

Hong Bao Amount Generator (红包金额)

RT-CHN-017

Budget + occasion → 12 lucky amounts

Hong Kong 18 Districts Reference (香港 18 區)

RT-CHN-070

HK Island 4 + Kowloon 5 + New Territories 9 · with codes

Hong Kong HKID Format Validator (香港身份证)

RT-CHN-066

1-2 letter + 6 digit + check character · Mod 11 algorithm

House Direction Analyzer (房屋朝向)

RT-CHN-065

Person-house compatibility · sunlight · 6 layout taboos

HSK Vocabulary Lookup (HSK 词汇表)

RT-CHN-032

HSK 1-6 vocab · 25 representative words per level

I-Ching 64 Hexagrams (易经六十四卦)

RT-CHN-043

64 hexagrams · line patterns · trigrams · coin-cast simulation

Kangxi Radical Lookup (214 部首查询)

RT-CHN-083

康熙 214 部首 · 85 精选 · 按笔画浏览

Kangxi Radical Reference (康熙部首查询)

RT-CHN-026

214 Kangxi radicals grouped by stroke count

Kua Number Calculator (Eight Mansions)

RT-CHN-008

八宅命卦 + 8 directions

Linear Regression & Correlation Calculator

RT-CNV-084

Slope + intercept + r + R² + scatter

Lucky Phone Number Picker (手机号选号)

RT-CHN-064

Score & rank candidate numbers · 168/888 vs 444/514

Lunar / Solar Date Converter

RT-CHN-010

Bidirectional Gregorian ↔ Chinese lunar

Mahjong Scoring HK Style (港式麻将番数计算)

RT-CHN-046

Hong Kong fan scoring · base × 2^min(fan, cap) · HK/SG/MY

Major Luck Cycle Calculator (大运排盘)

RT-CHN-058

10-year 大运 cycles · GanZhi · Ten God · 5-element

Malaysia MyKad Validator

RT-UTL-002

12-digit format + birth date + state code · browser-only

Malaysia Postcode Lookup

RT-UTL-005

5-digit postcode → state + postal zone (Pos Malaysia)

Mandarin Tone Drill (普通话声调练习)

RT-CHN-036

4 tones + neutral quiz · build tone-recognition reflexes

Moving House Date Selector (搬家吉日)

RT-CHN-005

宜入宅/移徙 + owner zodiac

Number to Hanzi Converter (数字转汉字)

RT-CHN-027

3 formats: 一二三 / 壹贰叁 / 壹貳叁

One-Way ANOVA Calculator

RT-CNV-092

F-test + eta-squared

Permutation & Combination Calculator

RT-CNV-080

nPr, nCr, factorial (BigInt)

Personal Lucky Color & Direction (用神喜忌)

RT-CHN-059

用神 (useful god) · colors + directions + industries

Pinyin ↔ Zhuyin Converter (拼音注音互换)

RT-CHN-024

ni3 hao3 ↔ ㄋㄧˇ ㄏㄠˇ

Quadratic Equation Solver

RT-CNV-094

ax^2+bx+c=0 real + complex

RMB Number to Chinese Capitalised Words

RT-CHN-009

RMB → Simplified Chinese invoice format

Sample Size Calculator

RT-CNV-093

Cochran + A/B test power

Sancai Wuge Name Analyzer (三才五格)

RT-CHN-060

5 Grids · 3 Talents · 81 numerology · overall score

Simplified ↔ Traditional Chinese Converter (简繁转换)

RT-CHN-037

cn ↔ tw ↔ hk · OpenCC-powered · word-level conversion

Singapore NRIC / FIN Validator

RT-UTL-001

Verifies the S/T/F/G/M check-letter algorithm · browser-only

Singapore Postcode Lookup

RT-UTL-004

6-digit postcode → District (D01-D28) + Planning Area + Region

Spring Festival Couplet Generator (春联生成器)

RT-CHN-051

40+ classic 春联 by 7 themes · vertical 上下联 + 横披 · print PDF

Standard Deviation Calculator

RT-CNV-081

Mean, SD, variance, quartiles

Standard Error Calculator

RT-CNV-097

SE of mean + proportion

T-Test Calculator

RT-CNV-090

One-sample / Welch / paired

Taiwan 22 Counties Reference (台灣 22 縣市)

RT-CHN-071

6 special municipalities + 3 cities + 13 counties · with ID letter

Taiwan National ID Format Validator (台灣身分證)

RT-CHN-067

1 letter + 9 digits · region + gender + checksum

Tang Poetry Browser (唐诗三百首精选)

RT-CHN-080

40 首精选 · 李白杜甫王维白居易 · 拼音 + 英文背景

Tian Gan Di Zhi Converter (天干地支)

RT-CHN-013

Any date → 60甲子 stem-branch

Time Duration Calculator

RT-CNV-089

HH:MM:SS arithmetic + decimal

Triangle Solver

RT-CNV-095

SSS/SAS/ASA/AAS/SSA

TWD Cheque Words (新台幣大寫)

RT-CHN-029

NTD → Traditional capital cheque format

Wedding Date Selector (结婚吉日)

RT-CHN-004

宜嫁娶 + bride/groom zodiac

Week Number Calculator

RT-CNV-088

ISO 8601 + US week numbering

Working Days Calculator

RT-CNV-086

Business days with ASEAN holidays

Xiangqi Interactive Board (中国象棋互动棋盘)

RT-CHN-047

Full 9×10 board · 32 pieces · click-to-move · auto-notation (Chinese + WXF)

Z-Score Calculator

RT-CNV-082

Standard score + percentile + p-value

Zhuyin / Bopomofo Converter (注音符号)

RT-CHN-023

Hanzi → ㄅㄆㄇㄈ Taiwan standard

Zodiac Daily Horoscope (生肖运势)

RT-CHN-062

Daily/weekly/monthly · 4 domains · lucky color/direction/number

Unit Converter

RT-CNV-001

Convert length, weight, temperature, area, volume and speed — instantly, free.

Timezone Converter

RT-CNV-002

Convert times across ASEAN and global timezones — perfect for remote teams and international meetings.

File Size Converter

RT-CNV-006

Convert between KB, MB, GB, TB

Speed Converter

RT-CNV-070

Convert speed units instantly — km/h, mph, m/s, knots, Mach and more — with a live conversion table.

Data Storage Converter

RT-CNV-008

Convert data storage units

Area Calculator

RT-CNV-072

Calculate the area of any shape — rectangle, circle, triangle, trapezoid and more — with formulas shown.

Colour Code Converter

RT-CNV-010

Convert HEX, RGB, HSL, HSB colours

Percentage Calculator

RT-CNV-071

Calculate percentages, discounts, tips and changes — the fastest percentage tool online.

Converters & Units Tools