Money & work
Salary, tax, mortgage, savings and other finance tools to help you plan with more confidence.
Useful answers, without the fuss.
Jobomba is a growing collection of free online calculators and utilities designed to make everyday questions easier to work out.
Built for the calculations that get in the way
Whether you are checking a salary, planning a budget, converting a measurement, working through dates, or formatting code, the small calculations behind a task should not slow you down.
Jobomba brings practical tools together in one clear, accessible place—so you can get an answer quickly and carry on with what matters.
WHAT YOU'LL FIND
Tools for practical, everyday tasks
Everyday conversions
Quick, reliable conversions for units, dates, time, measurements and more.
Tools for makers
Developer utilities for common tasks such as formatting, encoding, testing and generating data.
OUR APPROACH
Simple by design
Free to use
Our tools are available without creating an account or paying for a subscription.
Clear and focused
We aim for straightforward inputs, understandable results and useful supporting guidance.
Privacy-conscious
Calculators are designed to run in your browser, and we do not require an account to use them. Read our Privacy Policy for the details.
WHO WE ARE
Built by Open Doors Technology Limited
Jobomba is an independent online utility site operated by Open Doors Technology Limited, a software company registered in England. Our team of developers and subject-matter reviewers builds free calculators and tools for everyday finance, health, work, and productivity questions.
OUR COMMITMENT TO ACCURACY
Reviewed against official guidance
Finance tools
Our finance and tax calculators are reviewed against publicly available guidance from HMRC. We update tools promptly when tax rules, thresholds, or rates change.
Health & fitness tools
Our health, fitness, and nutrition calculators are aligned with publicly available guidance from the NHS and recognised health authorities.
Corrections & updates
We test every calculator against known reference values. If you spot an error, tell us and we will investigate and correct it promptly.
IMPORTANT NOTICE
For informational purposes only
Our tools and content are provided for general informational purposes only. They do not constitute professional financial, tax, legal, medical, or other professional advice. Always consult a qualified professional before making decisions based on information from this site. See our Terms of Use for full details.
HELP US IMPROVE
Looking for a tool we do not have yet?
We are always looking for useful ways to make Jobomba better. Tell us what would help you.