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YIMHO
Free Tools for Currency, Countries, Education & Research
Convert currencies, explore countries, compare global data, find research papers, generate citations, and use practical academic tools — all in one place.
Popular tools
Currency Converter
Convert between world currencies with live reference rates.
Exchange Rate Table
Browse a full table of exchange rates from a chosen base currency.
Country Explorer
Search countries for capitals, population, currency, and more.
Country Comparison
Compare two countries on population, GDP, area, and other indicators.
DOI Finder
Find a paper’s DOI, authors, journal, and citation details.
Citation Generator
Generate APA, MLA, Chicago, Harvard, IEEE, Vancouver, BibTeX, and RIS.
Research Paper Search
Search scholarly literature by title, author, DOI, or keyword.
GPA Calculator
Calculate GPA from course grades and credit hours.
Currency
Currency Converter
Convert between world currencies with live reference rates.
Exchange Rate Table
Browse a full table of exchange rates from a chosen base currency.
Currency Comparison
Compare several currencies side by side against a base amount.
Historical Exchange Rates
See how a currency pair has moved over recent months.
Travel Currency Calculator
Estimate trip spending across destination currencies.
Countries & World
Country Explorer
Search countries for capitals, population, currency, and more.
Country Comparison
Compare two countries on population, GDP, area, and other indicators.
World Statistics
Interactive charts of population, GDP, internet use, and more.
Capital Finder
Look up a country’s capital city instantly.
Currency Finder
Find which currency a country uses.
Education
University Search
Search academic institutions and their research output.
GPA Calculator
Calculate GPA from course grades and credit hours.
CGPA Calculator
Convert semester GPAs into a cumulative CGPA.
Attendance Calculator
See how many classes you can miss and still meet the requirement.
Percentage Calculator
Work out percentages, marks, and increase or decrease.
Grade Calculator
Find the score you need on remaining assessments.
Research
DOI Finder
Find a paper’s DOI, authors, journal, and citation details.
Citation Generator
Generate APA, MLA, Chicago, Harvard, IEEE, Vancouver, BibTeX, and RIS.
Research Paper Search
Search scholarly literature by title, author, DOI, or keyword.
Author Search
Find researchers, institutions, and publication records.
Recently added
New
Author Search
Find researchers, institutions, and publication records.
NewUniversity Search
Search academic institutions and their research output.
NewCapital Finder
Look up a country’s capital city instantly.
NewCurrency Finder
Find which currency a country uses.
NewPercentage Calculator
Work out percentages, marks, and increase or decrease.
NewGrade Calculator
Find the score you need on remaining assessments.
Why YIMHO?
Free
Use converters, explorers, and academic tools at no cost.
Useful
Every page is a working tool — not a thin wrapper around an API.
Reliable data
Rates and statistics come from documented official and open sources.
Frequently asked questions
What is YIMHO?
YIMHO is a free online utility platform for currency conversion, country and world data, academic calculators, and research tools.
Is YIMHO a blog or news site?
No. YIMHO is an interactive tools platform. The homepage shows tools, not articles.
Are the exchange rates live?
YIMHO uses official reference rates (primarily via Frankfurter / central-bank sources) and caches them. They are informational, not for bank settlement.
Where does country data come from?
Country facts come from an MIT-licensed world-countries dataset. Economic indicators come from World Bank Open Data (CC BY 4.0).
How do research tools work?
DOI lookup, paper search, and citations use Crossref and OpenAlex official APIs. We do not scrape publisher websites.