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Office 

PDF 

PDF to EPUB ☆

PDF to Word Converter ☆

Word to PDF ☆

Convert to PDF ☆

Protect PDF ☆

PDF Extract Images ☆

PDF Extract Text ☆

PDF Page Numbers ☆

PDF Reorder Pages ☆

PDF Watermark ☆

Compress PDF ☆

Document 

LaTeX Equation Editor ☆

Markdown Table Editor ☆

Markdown Previewer ☆

Copybook Generator ☆

Markdown to WeChat ☆

PDF to EPUB ☆

HTML to PPT ☆

Word to Markdown ☆

Markdown to Word ☆

HTML to Markdown ☆

Markdown to HTML ☆

PDF to Word Converter ☆

PDF Extract Text ☆

CSV 

Find Incomplete CSV ☆

CSV Separator & TSV Converter ☆

CSV Insert Columns ☆

CSV Swap Columns ☆

CSV Rows to Columns Converter ☆

TSV to JSON ☆

CSV to HTML Table ☆

CSV to XML Converter ☆

CSV to YAML Converter ☆

JSON to CSV ☆

CSV to JSON Converter ☆

SQL to JSON ☆

Media 

Image 

GIF Split Frames ☆

GIF Reverse ☆

GIF Change Speed ☆

Video to GIF ☆

Color Converter ☆

Code to Image ☆

Convert to PDF ☆

PDF Extract Images ☆

ASCII Art Generator ☆

SVG Optimizer ☆

Color Contrast Checker ☆

Color Blindness Simulator ☆

Color Palette Generator ☆

Placeholder Image Generator ☆

Sprite Sheet Generator ☆

Image Color Adjustment ☆

Image Opacity Adjuster ☆

Remove Watermark ☆

Image Collage ☆

Image Metadata Viewer ☆

EXIF Remover ☆

Image Pixelate ☆

Make Color Transparent ☆

Image to Text (OCR) ☆

Favicon Generator ☆

SVG to PNG Converter ☆

Color Picker ☆

Image Editor ☆

Image Rotate ☆

Image Watermark ☆

Remove Background ☆

Image Format Converter ☆

Image Resize ☆

Image Compressor ☆

Image to Base64 ☆

Barcode Decoder ☆

Barcode Generator ☆

QR Code Decoder ☆

QR Code Generator ☆

Video 

Extract Audio ☆

GIF Split Frames ☆

GIF Reverse ☆

GIF Change Speed ☆

Video Add Audio ☆

Video Watermark Remover ☆

Video Watermark ☆

Video Rotate ☆

Video Change Speed ☆

Video to GIF ☆

Merge Video ☆

Video Compressor ☆

Subtitle Converter ☆

Audio 

Text to Speech ☆

Speech to Text ☆

Extract Audio ☆

Audio Pitch Changer ☆

Audio Reverse ☆

Audio Change Speed ☆

Merge Audio ☆

Audio Converter ☆

Video Add Audio ☆

Dev Tools 

JSON 

TSV to JSON ☆

CSV to XML Converter ☆

CSV to YAML Converter ☆

JSON to CSV ☆

CSV to JSON Converter ☆

XML Beautifier ☆

XML Validator ☆

XML to YAML ☆

SQL to JSON ☆

JSON Stringify ☆

YAML to XML ☆

JSON Compare ☆

JSON Path Finder ☆

JSON Escape ☆

JSON to Go Struct ☆

JSON to TypeScript ☆

XML to JSON ☆

JSON to XML ☆

YAML to JSON ☆

JSON to YAML ☆

JSON Minify ☆

JSON Validator ☆

JSON Prettify ☆

Code 

Docker Compose Validator ☆

Binary File Diff ☆

File Splitter & Merger ☆

HTTP Request Tester ☆

.htaccess Generator ☆

Robots.txt Generator ☆

XML Sitemap Generator ☆

Markdown Table Editor ☆

Markdown Previewer ☆

HTML to Markdown ☆

Markdown to HTML ☆

CSV to HTML Table ☆

Slug Generator ☆

Crontab Guru ☆

Crontab Generator ☆

XML Beautifier ☆

XML Validator ☆

Code to Image ☆

Add Line Numbers ☆

Remove Line Numbers ☆

Meta Tag Generator ☆

Open Graph Generator ☆

Fake Data Generator ☆

cURL to Code ☆

SQL Formatter ☆

HTML Minifier ☆

HTML Beautifier ☆

JS Minifier ☆

JS Beautifier ☆

Regex Tester ☆

AI Token Counter ☆

Side-by-Side Diff ☆

Lorem Ipsum Generator ☆

SVG Optimizer ☆

Placeholder Image Generator ☆

Sprite Sheet Generator ☆

Favicon Generator ☆

SVG to PNG Converter ☆

RSA Key Generator ☆

SSH Key Generator ☆

SQL to JSON ☆

JSON to Go Struct ☆

JSON to TypeScript ☆

ULID Generator ☆

NanoID Generator ☆

UUID Generator ☆

JWT Generator ☆

JWT Decoder ☆

HTML Entity Decoder ☆

Encode & Decode 

AES Encryption / Decryption ☆

ULID Generator ☆

Basic Auth Generator ☆

ROT13 ☆

Punycode Encoder/Decoder ☆

Unicode Converter ☆

Base32 Encode/Decode ☆

Text to Hex ☆

Hex to Text ☆

Text to Binary ☆

Binary to Text ☆

Image to Base64 ☆

Barcode Decoder ☆

Barcode Generator ☆

QR Code Decoder ☆

QR Code Generator ☆

NanoID Generator ☆

UUID Generator ☆

JWT Generator ☆

JWT Decoder ☆

XML Escape/Unescape ☆

HTML Entity Decoder ☆

HTML Entity Encode/Decode ☆

URL Encode/Decode/Parse ☆

Base64 Encode/Decode ☆

Crypto & Security 

File Hash Checker ☆

Text Encryption ☆

Protect PDF ☆

EXIF Remover ☆

AES Encryption / Decryption ☆

RSA Key Generator ☆

SSH Key Generator ☆

HMAC Generator ☆

Password Strength Checker ☆

Bcrypt Generator ☆

Hash Generator ☆

Password Generator ☆

Basic Auth Generator ☆

ROT13 ☆

JWT Generator ☆

CSS 

CSS Beautifier ☆

CSS Minifier ☆

CSS Border Radius Generator ☆

CSS Box Shadow Generator ☆

CSS Grid Generator ☆

CSS Flexbox Generator ☆

CSS Gradient Generator ☆

SVG Optimizer ☆

Color Contrast Checker ☆

Color Blindness Simulator ☆

Color Palette Generator ☆

Color Picker ☆

Network 

Chmod Calculator ☆

HTTP Request Tester ☆

Random Port ☆

.htaccess Generator ☆

Robots.txt Generator ☆

XML Sitemap Generator ☆

User Agent Parser ☆

Credit Card Validator ☆

IBAN Validator ☆

Email Validator ☆

IP Address Validator ☆

URL Parser & Builder ☆

cURL to Code ☆

Basic Auth Generator ☆

Reference 

Docker Compose Validator ☆

Binary File Diff ☆

File Splitter & Merger ☆

File Hash Checker ☆

MIME Type Lookup ☆

Screen Resolution Checker ☆

Browser Info ☆

ASCII Table ☆

HTTP Status Codes ☆

Chmod Calculator ☆

AI Token Counter ☆

Text 

Text 

Markdown Table Editor ☆

Text to Speech ☆

Speech to Text ☆

Number Spell Out ☆

Character Map ☆

Hidden Character Detector ☆

Randomize Case ☆

Create Palindrome ☆

Palindrome Check ☆

String Similarity ☆

String Rotate ☆

String Repeat ☆

String Split ☆

String Join ☆

String Truncate ☆

String Reverse ☆

Add Line Numbers ☆

Remove Line Numbers ☆

Regex Tester ☆

Subtitle Converter ☆

AI Token Counter ☆

Emoji Picker ☆

Side-by-Side Diff ☆

Text Encryption ☆

Extract Substring ☆

Text Censor ☆

Lorem Ipsum Generator ☆

Remove Extra Spaces ☆

Remove Duplicate Lines ☆

Text Statistics ☆

Text Replacer ☆

Case Converter ☆

PDF Extract Text ☆

ASCII Art Generator ☆

Image to Text (OCR) ☆

String 

Character Map ☆

Hidden Character Detector ☆

Randomize Case ☆

Create Palindrome ☆

Palindrome Check ☆

Slug Generator ☆

String Similarity ☆

String Rotate ☆

String Repeat ☆

String Split ☆

String Join ☆

String Truncate ☆

String Reverse ☆

Extract Substring ☆

Remove Extra Spaces ☆

Remove Duplicate Lines ☆

Case Converter ☆

List 

List Unwrap ☆

List Shuffle ☆

List Truncate ☆

List Rotate ☆

List Popular ☆

List Reverse ☆

List Duplicate ☆

List Unique ☆

Converter & Calculator 

Math & Calculator 

Arithmetic Sequence Calculator ☆

GCD/LCM Calculator ☆

Prime Number Checker ☆

Factorial Calculator ☆

Fibonacci Generator ☆

Advanced Math Expression Calculator ☆

Loan Calculator ☆

Discount Calculator ☆

Tip Calculator ☆

BMI Calculator ☆

Percentage Calculator ☆

Scientific Calculator ☆

LaTeX Equation Editor ☆

Precise Age Calculator ☆

Currency Converter ☆

Time & Date 

Precise Age Calculator ☆

Roman Numeral Clock ☆

Truncate Clock Time ☆

Leap Year Checker ☆

Days to Hours ☆

Hours to Days ☆

Time to Decimal ☆

Time to Seconds ☆

Seconds to Time ☆

Discord Timestamp Generator ☆

Calendar Generator ☆

Crontab Guru ☆

Crontab Generator ☆

Age Calculator ☆

Time Between Dates ☆

Timezone Converter ☆

Unix to Date ☆

Unit Converter 

Number Formatter ☆

Color Converter ☆

Energy Converter ☆

Frequency Converter ☆

Angle Converter ☆

Pressure Converter ☆

Currency Converter ☆

Area Converter ☆

Volume Converter ☆

Speed Converter ☆

Byte Converter ☆

Data Storage Converter ☆

Temperature Converter ☆

Weight Converter ☆

Length Converter ☆

Number 

Random Number ☆

Roman Numeral Converter ☆

Number Spell Out ☆

Number Generate ☆

Number Formatter ☆

Number Base Converter ☆

Roman Numeral Clock ☆

Clear

Clear

 ×

Office 

PDF 

PDF to EPUB ☆

PDF to Word Converter ☆

Word to PDF ☆

Convert to PDF ☆

Protect PDF ☆

PDF Extract Images ☆

PDF Extract Text ☆

PDF Page Numbers ☆

PDF Reorder Pages ☆

PDF Watermark ☆

Compress PDF ☆

Document 

LaTeX Equation Editor ☆

Markdown Table Editor ☆

Markdown Previewer ☆

Copybook Generator ☆

Markdown to WeChat ☆

PDF to EPUB ☆

HTML to PPT ☆

Word to Markdown ☆

Markdown to Word ☆

HTML to Markdown ☆

Markdown to HTML ☆

PDF to Word Converter ☆

PDF Extract Text ☆

CSV 

Find Incomplete CSV ☆

CSV Separator & TSV Converter ☆

CSV Insert Columns ☆

CSV Swap Columns ☆

CSV Rows to Columns Converter ☆

TSV to JSON ☆

CSV to HTML Table ☆

CSV to XML Converter ☆

CSV to YAML Converter ☆

JSON to CSV ☆

CSV to JSON Converter ☆

SQL to JSON ☆

Media 

Image 

GIF Split Frames ☆

GIF Reverse ☆

GIF Change Speed ☆

Video to GIF ☆

Color Converter ☆

Code to Image ☆

Convert to PDF ☆

PDF Extract Images ☆

ASCII Art Generator ☆

SVG Optimizer ☆

Color Contrast Checker ☆

Color Blindness Simulator ☆

Color Palette Generator ☆

Placeholder Image Generator ☆

Sprite Sheet Generator ☆

Image Color Adjustment ☆

Image Opacity Adjuster ☆

Remove Watermark ☆

Image Collage ☆

Image Metadata Viewer ☆

EXIF Remover ☆

Image Pixelate ☆

Make Color Transparent ☆

Image to Text (OCR) ☆

Favicon Generator ☆

SVG to PNG Converter ☆

Color Picker ☆

Image Editor ☆

Image Rotate ☆

Image Watermark ☆

Remove Background ☆

Image Format Converter ☆

Image Resize ☆

Image Compressor ☆

Image to Base64 ☆

Barcode Decoder ☆

Barcode Generator ☆

QR Code Decoder ☆

QR Code Generator ☆

Video 

Extract Audio ☆

GIF Split Frames ☆

GIF Reverse ☆

GIF Change Speed ☆

Video Add Audio ☆

Video Watermark Remover ☆

Video Watermark ☆

Video Rotate ☆

Video Change Speed ☆

Video to GIF ☆

Merge Video ☆

Video Compressor ☆

Subtitle Converter ☆

Audio 

Text to Speech ☆

Speech to Text ☆

Extract Audio ☆

Audio Pitch Changer ☆

Audio Reverse ☆

Audio Change Speed ☆

Merge Audio ☆

Audio Converter ☆

Video Add Audio ☆

Dev Tools 

JSON 

TSV to JSON ☆

CSV to XML Converter ☆

CSV to YAML Converter ☆

JSON to CSV ☆

CSV to JSON Converter ☆

XML Beautifier ☆

XML Validator ☆

XML to YAML ☆

SQL to JSON ☆

JSON Stringify ☆

YAML to XML ☆

JSON Compare ☆

JSON Path Finder ☆

JSON Escape ☆

JSON to Go Struct ☆

JSON to TypeScript ☆

XML to JSON ☆

JSON to XML ☆

YAML to JSON ☆

JSON to YAML ☆

JSON Minify ☆

JSON Validator ☆

JSON Prettify ☆

Code 

Docker Compose Validator ☆

Binary File Diff ☆

File Splitter & Merger ☆

HTTP Request Tester ☆

.htaccess Generator ☆

Robots.txt Generator ☆

XML Sitemap Generator ☆

Markdown Table Editor ☆

Markdown Previewer ☆

HTML to Markdown ☆

Markdown to HTML ☆

CSV to HTML Table ☆

Slug Generator ☆

Crontab Guru ☆

Crontab Generator ☆

XML Beautifier ☆

XML Validator ☆

Code to Image ☆

Add Line Numbers ☆

Remove Line Numbers ☆

Meta Tag Generator ☆

Open Graph Generator ☆

Fake Data Generator ☆

cURL to Code ☆

SQL Formatter ☆

HTML Minifier ☆

HTML Beautifier ☆

JS Minifier ☆

JS Beautifier ☆

Regex Tester ☆

AI Token Counter ☆

Side-by-Side Diff ☆

Lorem Ipsum Generator ☆

SVG Optimizer ☆

Placeholder Image Generator ☆

Sprite Sheet Generator ☆

Favicon Generator ☆

SVG to PNG Converter ☆

RSA Key Generator ☆

SSH Key Generator ☆

SQL to JSON ☆

JSON to Go Struct ☆

JSON to TypeScript ☆

ULID Generator ☆

NanoID Generator ☆

UUID Generator ☆

JWT Generator ☆

JWT Decoder ☆

HTML Entity Decoder ☆

Encode & Decode 

AES Encryption / Decryption ☆

ULID Generator ☆

Basic Auth Generator ☆

ROT13 ☆

Punycode Encoder/Decoder ☆

Unicode Converter ☆

Base32 Encode/Decode ☆

Text to Hex ☆

Hex to Text ☆

Text to Binary ☆

Binary to Text ☆

Image to Base64 ☆

Barcode Decoder ☆

Barcode Generator ☆

QR Code Decoder ☆

QR Code Generator ☆

NanoID Generator ☆

UUID Generator ☆

JWT Generator ☆

JWT Decoder ☆

XML Escape/Unescape ☆

HTML Entity Decoder ☆

HTML Entity Encode/Decode ☆

URL Encode/Decode/Parse ☆

Base64 Encode/Decode ☆

Crypto & Security 

File Hash Checker ☆

Text Encryption ☆

Protect PDF ☆

EXIF Remover ☆

AES Encryption / Decryption ☆

RSA Key Generator ☆

SSH Key Generator ☆

HMAC Generator ☆

Password Strength Checker ☆

Bcrypt Generator ☆

Hash Generator ☆

Password Generator ☆

Basic Auth Generator ☆

ROT13 ☆

JWT Generator ☆

CSS 

CSS Beautifier ☆

CSS Minifier ☆

CSS Border Radius Generator ☆

CSS Box Shadow Generator ☆

CSS Grid Generator ☆

CSS Flexbox Generator ☆

CSS Gradient Generator ☆

SVG Optimizer ☆

Color Contrast Checker ☆

Color Blindness Simulator ☆

Color Palette Generator ☆

Color Picker ☆

Network 

Chmod Calculator ☆

HTTP Request Tester ☆

Random Port ☆

.htaccess Generator ☆

Robots.txt Generator ☆

XML Sitemap Generator ☆

User Agent Parser ☆

Credit Card Validator ☆

IBAN Validator ☆

Email Validator ☆

IP Address Validator ☆

URL Parser & Builder ☆

cURL to Code ☆

Basic Auth Generator ☆

Reference 

Docker Compose Validator ☆

Binary File Diff ☆

File Splitter & Merger ☆

File Hash Checker ☆

MIME Type Lookup ☆

Screen Resolution Checker ☆

Browser Info ☆

ASCII Table ☆

HTTP Status Codes ☆

Chmod Calculator ☆

AI Token Counter ☆

Text 

Text 

Markdown Table Editor ☆

Text to Speech ☆

Speech to Text ☆

Number Spell Out ☆

Character Map ☆

Hidden Character Detector ☆

Randomize Case ☆

Create Palindrome ☆

Palindrome Check ☆

String Similarity ☆

String Rotate ☆

String Repeat ☆

String Split ☆

String Join ☆

String Truncate ☆

String Reverse ☆

Add Line Numbers ☆

Remove Line Numbers ☆

Regex Tester ☆

Subtitle Converter ☆

AI Token Counter ☆

Emoji Picker ☆

Side-by-Side Diff ☆

Text Encryption ☆

Extract Substring ☆

Text Censor ☆

Lorem Ipsum Generator ☆

Remove Extra Spaces ☆

Remove Duplicate Lines ☆

Text Statistics ☆

Text Replacer ☆

Case Converter ☆

PDF Extract Text ☆

ASCII Art Generator ☆

Image to Text (OCR) ☆

String 

Character Map ☆

Hidden Character Detector ☆

Randomize Case ☆

Create Palindrome ☆

Palindrome Check ☆

Slug Generator ☆

String Similarity ☆

String Rotate ☆

String Repeat ☆

String Split ☆

String Join ☆

String Truncate ☆

String Reverse ☆

Extract Substring ☆

Remove Extra Spaces ☆

Remove Duplicate Lines ☆

Case Converter ☆

List 

List Unwrap ☆

List Shuffle ☆

List Truncate ☆

List Rotate ☆

List Popular ☆

List Reverse ☆

List Duplicate ☆

List Unique ☆

Converter & Calculator 

Math & Calculator 

Arithmetic Sequence Calculator ☆

GCD/LCM Calculator ☆

Prime Number Checker ☆

Factorial Calculator ☆

Fibonacci Generator ☆

Advanced Math Expression Calculator ☆

Loan Calculator ☆

Discount Calculator ☆

Tip Calculator ☆

BMI Calculator ☆

Percentage Calculator ☆

Scientific Calculator ☆

LaTeX Equation Editor ☆

Precise Age Calculator ☆

Currency Converter ☆

Time & Date 

Precise Age Calculator ☆

Roman Numeral Clock ☆

Truncate Clock Time ☆

Leap Year Checker ☆

Days to Hours ☆

Hours to Days ☆

Time to Decimal ☆

Time to Seconds ☆

Seconds to Time ☆

Discord Timestamp Generator ☆

Calendar Generator ☆

Crontab Guru ☆

Crontab Generator ☆

Age Calculator ☆

Time Between Dates ☆

Timezone Converter ☆

Unix to Date ☆

Unit Converter 

Number Formatter ☆

Color Converter ☆

Energy Converter ☆

Frequency Converter ☆

Angle Converter ☆

Pressure Converter ☆

Currency Converter ☆

Area Converter ☆

Volume Converter ☆

Speed Converter ☆

Byte Converter ☆

Data Storage Converter ☆

Temperature Converter ☆

Weight Converter ☆

Length Converter ☆

Number 

Random Number ☆

Roman Numeral Converter ☆

Number Spell Out ☆

Number Generate ☆

Number Formatter ☆

Number Base Converter ☆

Roman Numeral Clock ☆

Clear

Clear

Time to Seconds

Convert human-readable time format to total seconds. Supports multiple formats. Runs entirely in your browser.

What time formats are supported? 

Formats like "1h 30m 45s", "1:30:45", or "90m" are all supported.

How are days handled? 

Use "d" suffix: "1d 2h" equals 93600 seconds.

Is my data safe? 

Yes. All processing happens locally in your browser.

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