Find your way around.
Time & planning
- Time Zone Converter
- World Meeting Planner
- World Clock
- Work Hours Calculator
- Time Since Calculator
- Add & Subtract Durations
Date & calendar
- Printable Year Calendar
- Age Calculator
- Date Duration Calculator
- Business Days Calculator
- Add or Subtract Days
- Day of the Week Calculator
- ISO Week Number Calculator
- Printable Monthly Calendar
- Chinese Calendar Date Converter
- Hijri Date Converter
Everyday calculators
- Discount Calculator
- Tip & Bill Split Calculator
- Sales Tax Calculator
- Margin & Markup Calculator
- Square Footage Calculator
- Average Speed Calculator
- Fuel Economy Converter
- Aspect Ratio Calculator
- Pixel Density Calculator
Numbers & text
- Unix Timestamp Converter
- Roman Numeral Converter
- Percentage Calculator
- Unit Converter
- Word & Character Counter
- Ratio Simplifier & Split Calculator
- Average, Median & Range Calculator
- Fraction Calculator
- Scientific Notation Converter
- GCD & LCM Calculator
- Rounding Calculator
- Random Number Generator
- Reading Time Calculator
- Text Case Converter
- Remove Duplicate Lines
- Sort Lines
- Whitespace Cleaner
Developer tools
- Number Base Converter
- Digital Storage Converter
- Text Difference Checker
- JSON Formatter & Validator
- URL Component Encoder & Decoder
- Base64 Encoder & Decoder
- HTML Entity Encoder & Decoder
- HEX, RGB & HSL Color Converter
- SHA Hash Generator
- UUID v4 Generator
- JWT Decoder
- JSON to CSV Converter
- CSV to JSON Converter
- Query String Parser
- Text to Hex Converter
- Unicode Inspector
- JSON String Escape & Unescape
- UTF-8 Byte Size Calculator
- Password Generator
- URL Slug Generator
- JSON Pointer Lookup
- JSON Compare
- HTTP Header Parser
- CSV to HTML Table
Focus & timers
Faith & reference
- Monthly Prayer Calendar
- Ramadan Calendar
- Zakat Calculator
- Public Holiday Reference
- Prayer Times by City
- Sunrise, Sunset & Moon Phase
Country and city directories
Holiday calendars for every saved country
Prayer times
- Afghanistan
- Aland Islands
- Albania
- Algeria
- American Samoa
- Andorra
- Angola
- Anguilla
- Antigua and Barbuda
- Argentina
- Armenia
- Aruba
- Australia
- Austria
- Azerbaijan
- Bahamas
- Bahrain
- Bangladesh
- Barbados
- Belarus
- Belgium
- Belize
- Benin
- Bermuda
- Bhutan
- Bolivia
- Bonaire, Saint Eustatius and Saba
- Bosnia and Herzegovina
- Botswana
- Brazil
- British Virgin Islands
- Brunei
- Bulgaria
- Burkina Faso
- Burundi
- Cabo Verde
- Cambodia
- Cameroon
- Canada
- Cayman Islands
- Central African Republic
- Chad
- Chile
- China
- Christmas Island
- Cocos Islands
- Colombia
- Comoros
- Cook Islands
- Costa Rica
- Croatia
- Cuba
- Curacao
- Cyprus
- Czechia
- Democratic Republic of the Congo
- Denmark
- Djibouti
- Dominica
- Dominican Republic
- Ecuador
- Egypt
- El Salvador
- Equatorial Guinea
- Eritrea
- Estonia
- Eswatini
- Ethiopia
- Falkland Islands
- Faroe Islands
- Fiji
- Finland
- France
- French Guiana
- French Polynesia
- French Southern Territories
- Gabon
- Gambia
- Georgia
- Germany
- Ghana
- Gibraltar
- Greece
- Greenland
- Grenada
- Guadeloupe
- Guam
- Guatemala
- Guernsey
- Guinea
- Guinea-Bissau
- Guyana
- Haiti
- Honduras
- Hong Kong
- Hungary
- Iceland
- India
- Indonesia
- Iran
- Iraq
- Ireland
- Isle of Man
- Israel
- Italy
- Ivory Coast
- Jamaica
- Japan
- Jersey
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- Kosovo
- Kuwait
- Kyrgyzstan
- Laos
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Liechtenstein
- Lithuania
- Luxembourg
- Macao
- Madagascar
- Malawi
- Malaysia
- Maldives
- Mali
- Malta
- Marshall Islands
- Martinique
- Mauritania
- Mauritius
- Mayotte
- Mexico
- Micronesia
- Moldova
- Monaco
- Mongolia
- Montenegro
- Montserrat
- Morocco
- Mozambique
- Myanmar
- Namibia
- Nauru
- Nepal
- New Caledonia
- New Zealand
- Nicaragua
- Niger
- Nigeria
- Niue
- Norfolk Island
- North Korea
- North Macedonia
- Northern Mariana Islands
- Norway
- Oman
- Pakistan
- Palau
- Palestinian Territory
- Panama
- Papua New Guinea
- Paraguay
- Peru
- Philippines
- Pitcairn
- Poland
- Portugal
- Puerto Rico
- Qatar
- Republic of the Congo
- Reunion
- Romania
- Russia
- Rwanda
- Saint Barthelemy
- Saint Helena
- Saint Kitts and Nevis
- Saint Lucia
- Saint Martin
- Saint Pierre and Miquelon
- Saint Vincent and the Grenadines
- Samoa
- San Marino
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Serbia
- Seychelles
- Sierra Leone
- Singapore
- Sint Maarten
- Slovakia
- Slovenia
- Solomon Islands
- Somalia
- South Africa
- South Georgia and the South Sandwich Islands
- South Korea
- South Sudan
- Spain
- Sri Lanka
- Sudan
- Suriname
- Svalbard and Jan Mayen
- Sweden
- Switzerland
- Syria
- Taiwan
- Tajikistan
- Tanzania
- Thailand
- The Netherlands
- Timor Leste
- Togo
- Tonga
- Trinidad and Tobago
- Tunisia
- Turkey
- Turkmenistan
- Turks and Caicos Islands
- Tuvalu
- U.S. Virgin Islands
- Uganda
- Ukraine
- United Arab Emirates
- United Kingdom
- United States
- Uruguay
- Uzbekistan
- Vanuatu
- Vatican
- Venezuela
- Vietnam
- Wallis and Futuna
- Western Sahara
- Yemen
- Zambia
- Zimbabwe
Monthly prayer calendars
- Afghanistan
- Aland Islands
- Albania
- Algeria
- American Samoa
- Andorra
- Angola
- Anguilla
- Antigua and Barbuda
- Argentina
- Armenia
- Aruba
- Australia
- Austria
- Azerbaijan
- Bahamas
- Bahrain
- Bangladesh
- Barbados
- Belarus
- Belgium
- Belize
- Benin
- Bermuda
- Bhutan
- Bolivia
- Bonaire, Saint Eustatius and Saba
- Bosnia and Herzegovina
- Botswana
- Brazil
- British Virgin Islands
- Brunei
- Bulgaria
- Burkina Faso
- Burundi
- Cabo Verde
- Cambodia
- Cameroon
- Canada
- Cayman Islands
- Central African Republic
- Chad
- Chile
- China
- Christmas Island
- Cocos Islands
- Colombia
- Comoros
- Cook Islands
- Costa Rica
- Croatia
- Cuba
- Curacao
- Cyprus
- Czechia
- Democratic Republic of the Congo
- Denmark
- Djibouti
- Dominica
- Dominican Republic
- Ecuador
- Egypt
- El Salvador
- Equatorial Guinea
- Eritrea
- Estonia
- Eswatini
- Ethiopia
- Falkland Islands
- Faroe Islands
- Fiji
- Finland
- France
- French Guiana
- French Polynesia
- French Southern Territories
- Gabon
- Gambia
- Georgia
- Germany
- Ghana
- Gibraltar
- Greece
- Greenland
- Grenada
- Guadeloupe
- Guam
- Guatemala
- Guernsey
- Guinea
- Guinea-Bissau
- Guyana
- Haiti
- Honduras
- Hong Kong
- Hungary
- Iceland
- India
- Indonesia
- Iran
- Iraq
- Ireland
- Isle of Man
- Israel
- Italy
- Ivory Coast
- Jamaica
- Japan
- Jersey
- Jordan
- Kazakhstan
- Kenya
- Kiribati
- Kosovo
- Kuwait
- Kyrgyzstan
- Laos
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Liechtenstein
- Lithuania
- Luxembourg
- Macao
- Madagascar
- Malawi
- Malaysia
- Maldives
- Mali
- Malta
- Marshall Islands
- Martinique
- Mauritania
- Mauritius
- Mayotte
- Mexico
- Micronesia
- Moldova
- Monaco
- Mongolia
- Montenegro
- Montserrat
- Morocco
- Mozambique
- Myanmar
- Namibia
- Nauru
- Nepal
- New Caledonia
- New Zealand
- Nicaragua
- Niger
- Nigeria
- Niue
- Norfolk Island
- North Korea
- North Macedonia
- Northern Mariana Islands
- Norway
- Oman
- Pakistan
- Palau
- Palestinian Territory
- Panama
- Papua New Guinea
- Paraguay
- Peru
- Philippines
- Pitcairn
- Poland
- Portugal
- Puerto Rico
- Qatar
- Republic of the Congo
- Reunion
- Romania
- Russia
- Rwanda
- Saint Barthelemy
- Saint Helena
- Saint Kitts and Nevis
- Saint Lucia
- Saint Martin
- Saint Pierre and Miquelon
- Saint Vincent and the Grenadines
- Samoa
- San Marino
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Serbia
- Seychelles
- Sierra Leone
- Singapore
- Sint Maarten
- Slovakia
- Slovenia
- Solomon Islands
- Somalia
- South Africa
- South Georgia and the South Sandwich Islands
- South Korea
- South Sudan
- Spain
- Sri Lanka
- Sudan
- Suriname
- Svalbard and Jan Mayen
- Sweden
- Switzerland
- Syria
- Taiwan
- Tajikistan
- Tanzania
- Thailand
- The Netherlands
- Timor Leste
- Togo
- Tonga
- Trinidad and Tobago
- Tunisia
- Turkey
- Turkmenistan
- Turks and Caicos Islands
- Tuvalu
- U.S. Virgin Islands
- Uganda
- Ukraine
- United Arab Emirates
- United Kingdom
- United States
- Uruguay
- Uzbekistan
- Vanuatu
- Vatican
- Venezuela
- Vietnam
- Wallis and Futuna
- Western Sahara
- Yemen
- Zambia
- Zimbabwe
Ramadan calendars
- Afghanistan
- Aland Islands
- Albania
- Algeria
- American Samoa
- Andorra
- Angola
- Anguilla
- Antigua and Barbuda
- Argentina
- Armenia
- Aruba
- Australia
- Austria
- Azerbaijan
- Bahamas
- Bahrain
- Bangladesh
- Barbados
- Belarus
- Belgium
- Belize
- Benin
- Bermuda
- Bhutan
- Bolivia
- Bonaire, Saint Eustatius and Saba
- Bosnia and Herzegovina
- Botswana
- Brazil
- British Virgin Islands
- Brunei
- Bulgaria
- Burkina Faso
- Burundi
- Cabo Verde
- Cambodia
- Cameroon
- Canada
- Cayman Islands
- Central African Republic
- Chad
- Chile
- China
- Christmas Island
- Cocos Islands
- Colombia
- Comoros
- Cook Islands
- Costa Rica
- Croatia
- Cuba
- Curacao
- Cyprus
- Czechia
- Democratic Republic of the Congo
- Denmark
- Djibouti
- Dominica
- Dominican Republic
- Ecuador
- Egypt
- El Salvador
- Equatorial Guinea
- Eritrea
- Estonia
- Eswatini
- Ethiopia
- Falkland Islands
- Faroe Islands
- Fiji
- Finland
- France
- French Guiana
- French Polynesia
- French Southern Territories
- Gabon
- Gambia
- Georgia
- Germany
- Ghana
- Gibraltar
- Greece
- Greenland
- Grenada
- Guadeloupe
- Guam
- Guatemala
- Guernsey
- Guinea
- Guinea-Bissau
- Guyana
- Haiti
- Honduras
- Hong Kong
- Hungary
- Iceland
- India
- Indonesia
- Iran
- Iraq
- Ireland
- Isle of Man
- Israel
- Italy
- Ivory Coast
- Jamaica
- Japan
- Jersey
- Jordan
- Kazakhstan
- Kenya
- Kiribati
- Kosovo
- Kuwait
- Kyrgyzstan
- Laos
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Liechtenstein
- Lithuania
- Luxembourg
- Macao
- Madagascar
- Malawi
- Malaysia
- Maldives
- Mali
- Malta
- Marshall Islands
- Martinique
- Mauritania
- Mauritius
- Mayotte
- Mexico
- Micronesia
- Moldova
- Monaco
- Mongolia
- Montenegro
- Montserrat
- Morocco
- Mozambique
- Myanmar
- Namibia
- Nauru
- Nepal
- New Caledonia
- New Zealand
- Nicaragua
- Niger
- Nigeria
- Niue
- Norfolk Island
- North Korea
- North Macedonia
- Northern Mariana Islands
- Norway
- Oman
- Pakistan
- Palau
- Palestinian Territory
- Panama
- Papua New Guinea
- Paraguay
- Peru
- Philippines
- Pitcairn
- Poland
- Portugal
- Puerto Rico
- Qatar
- Republic of the Congo
- Reunion
- Romania
- Russia
- Rwanda
- Saint Barthelemy
- Saint Helena
- Saint Kitts and Nevis
- Saint Lucia
- Saint Martin
- Saint Pierre and Miquelon
- Saint Vincent and the Grenadines
- Samoa
- San Marino
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Serbia
- Seychelles
- Sierra Leone
- Singapore
- Sint Maarten
- Slovakia
- Slovenia
- Solomon Islands
- Somalia
- South Africa
- South Georgia and the South Sandwich Islands
- South Korea
- South Sudan
- Spain
- Sri Lanka
- Sudan
- Suriname
- Svalbard and Jan Mayen
- Sweden
- Switzerland
- Syria
- Taiwan
- Tajikistan
- Tanzania
- Thailand
- The Netherlands
- Timor Leste
- Togo
- Tonga
- Trinidad and Tobago
- Tunisia
- Turkey
- Turkmenistan
- Turks and Caicos Islands
- Tuvalu
- U.S. Virgin Islands
- Uganda
- Ukraine
- United Arab Emirates
- United Kingdom
- United States
- Uruguay
- Uzbekistan
- Vanuatu
- Vatican
- Venezuela
- Vietnam
- Wallis and Futuna
- Western Sahara
- Yemen
- Zambia
- Zimbabwe
Guides & information
- About ZenUtility
- Contact & report an issue
- Privacy Policy
- Terms of Use
- Calculation Disclaimer
- Methods & Corrections
- Calendar Days vs Business Days
- Plan a Meeting Across Time Zones
- Hours and Minutes to Decimal Hours
- How to Read a World Clock Across Different Dates
- Calculate Age in Years, Months and Days
- Count Days Between Two Dates Without an Off-by-One Error
- Add or Subtract Calendar Days from a Date
- Find the Weekday for Any Calendar Date
- Why an ISO Week Can Belong to a Different Year
- Measure Time Since an Event
- Set an Online Timer That Matches Your Task
- Plan a Pomodoro Session Around One Clear Task
- Read Stopwatch Laps and Total Time
- Set a Countdown with the Correct Date and Time Zone
- Print a Monthly Calendar with the Right Holiday Marks
- Make a Printable Year Planner
- Unix Timestamps: Seconds, Milliseconds and Local Time
- Read Roman Numerals and Check Standard Notation
- Percentage Change, Percentage Points and Percent of a Number
- Convert Units Without Mixing Different Quantities
- Word Counts, Character Counts and Text Limits
- Chinese Calendar Dates and Leap Months
- Hijri Conversion and Local Moon-Sighting Dates
- Prepare the Inputs for a Simple Zakat Estimate
- Public Holidays, Regional Dates and Observances
- Choose a City, Prayer Method and Asr School
- Print and Check a Monthly Prayer Timetable
- Prepare Your Ramadan 2027 Calendar (1448 AH)
- Read Sunrise, Sunset and Moon Phase Estimates
- Daylight Saving: Missing and Repeated Local Times
- Compare Sale Prices and Stacked Discounts
- Split a Restaurant Bill Without Losing the Remainder
- Extract Included Tax Using the Correct Base
- Margin and Markup Use Different Starting Points
- Split a Total in a Given Ratio
- Choose Between the Mean and the Median
- Add Fractions Without Adding Their Denominators
- Read Powers of Ten and E Notation
- Convert Binary and Hexadecimal Values Safely
- Use Common Factors and Common Multiples
- Choose a Rounding Rule Before Rounding
- Sample Random Integers with or Without Repeats
- Measure a Rectangular Area Before Ordering Materials
- Average Speed Depends on Total Elapsed Time
- Compare Fuel Economy Across Different Units
- Why a GB and a GiB Give Different Numbers
- Resize Dimensions Without Stretching an Image
- Read Display Density Without Confusing It with Size
- Add Hours and Minutes Using Base 60
- Estimate Reading Time with a Pace That Fits the Task
- Change Capitalization Without Losing Meaning
- Clean a List Without Changing Its Original Order
- Choose Numeric or Text Sorting for a List
- Clean Whitespace Without Damaging the Structure
- Compare Text Versions and Read a Line Diff
- Format JSON Without Confusing Syntax and Validation
- Encode a Query Value Without Breaking URL Separators
- Use Base64 for Representation, Not Secrecy
- Escape HTML Characters in the Right Context
- Move Between HEX, RGB and HSL Colour Values
- Get a Repeatable SHA Hash From Text
- Use Random UUIDs as Identifiers
- Read JWT Claims Without Mistaking Decoding for Verification
- Convert JSON Records Into a CSV Table
- Keep CSV Values Intact When Converting to JSON
- Read Query Strings Without Losing Repeated Parameters
- Check the UTF-8 Bytes Behind a String
- Find Hidden Differences in Unicode Text
- Escape Text for a JSON String Value
- Estimate Text Payload Size in UTF-8
- Generate and Store a Unique Password
- Choose a Readable Slug and Keep Its URL Stable
- Find an Exact Value With JSON Pointer
- Compare JSON Values Instead of Formatting
- Read HTTP Headers Without Combining the Wrong Fields
- Publish CSV Data as an Accessible HTML Table