Useful. Fast. Local. Free.
Edit PDFs, transform spreadsheets, convert units, run calculations, format code, practise typing, or relax with our selection of games. Your inputs stay in your browser.
Six challenges. One daily grid.
Play the same word, memory, mines, typing, maths and colour mix as everyone else—privately in your browser.
One toolbox, many possibilities
Choose a workspace and get straight to the useful part.
Built for a complete task
Each workspace combines an interactive tool with the information needed to understand its output. You can see the method, follow a worked example, check assumptions and limitations, and move to a closely related tool without searching through unrelated pages.
Open a PDF or spreadsheet, make the change, and download the result from the same workspace. HandyGrid has no document upload endpoint or account-based file store. File bytes stay in browser memory while the tool is open.
Start with the PDF workspace or use the CSV Cleaner to remove empty and duplicate rows before exporting a clean file.
Calculator and converter pages show their formula or processing rule, input units, a worked example, common mistakes, and risk guidance. Financial, health, construction, and network results are labelled as estimates where real-world decisions need more information or qualified review.
For example, the Mortgage Calculator explains its fixed-rate model and exclusions, while the IPv4 Subnet Calculator separates address arithmetic from live network behaviour.
Most HandyGrid tools need no account, installation, or remote calculation service. Your entries are not added to page URLs. Where a feature saves a preference or progress summary, the page identifies that browser storage and provides a way to clear it.
Read the plain-language Privacy Policy and Cookies information for the exact boundaries, including optional analytics and advertising consent.
Evidence, ownership and corrections
Goldwave Dynamics Limited publishes and maintains HandyGrid. The calculation logic is kept separate from page presentation where practicable, and releases pass formatting, type, unit, browser, build, accessibility-oriented, SEO, monetisation, and performance checks before deployment. These checks reduce known errors; they do not turn a general-purpose browser tool into professional advice or an independent certification.
Our Testing and Methodology page records representative test cases and limitations. The About page identifies the publisher and editorial responsibility. If a result appears wrong, use the contact page and include the tool URL, inputs, observed result, expected result, and any supporting source so the report can be reproduced and reviewed.
