Free online tools
Compare documents, open a spreadsheet without Excel, convert, calculate, generate — and a full set for the project schedules nobody can open. Everything runs in your browser: nothing uploaded, nothing stored, no sign-up.
2 products36 free toolsNo sign-up for the tools
The ones people come here for most.
Compare two Word, PDF, text, Markdown, CSV or JSON files and highlight every word that changed.
Open an Excel or CSV file in your browser with no Excel installed — every sheet, searchable, nothing uploaded.
Convert length, mass, volume, area, speed and temperature, with the formula shown.
X% of Y, what percent one number is of another, and the percentage change between two values.
Format, minify and validate JSON — and when it is broken, get told exactly where.
Exact age or the gap between two dates, in years, months and days, plus the countdown to the next birthday.
Line items, tax and a discount in; a clean invoice out, ready to save as a PDF.
Strong passwords and API keys from your browser’s cryptographic random source, never a server.
Anything with history, versions or a team behind it gets its own home.
Upload your project plan and get dashboards, health scoring and a steering-committee deck that cannot contradict its own numbers.
The everyday PDF jobs — merge, split, compress, sign, protect — done entirely in your browser. Your files are never uploaded.
Encode, convert, generate, inspect. All in the browser, nothing uploaded.
Compare two versions, open a spreadsheet without Excel, tidy a file, turn notes into a document.
Compare two Word, PDF, text, Markdown, CSV or JSON files and highlight every word that changed.
Open an Excel or CSV file in your browser with no Excel installed — every sheet, searchable, nothing uploaded.
Fix stray headers, merged cells, blank rows and trailing spaces, then export a tidy file.
Turn notes or AI output into a properly formatted document.
Paste your notes and get a structured action list with owners and due dates.
Shrink a heavy PowerPoint or PDF until it survives the email size limit.
Units, percentages and dates, worked out without the mental arithmetic.
Convert length, mass, volume, area, speed and temperature, with the formula shown.
X% of Y, what percent one number is of another, and the percentage change between two values.
Exact age or the gap between two dates, in years, months and days, plus the countdown to the next birthday.
Invoices, loans and hours — the sums freelancers and small teams redo by hand.
Line items, tax and a discount in; a clean invoice out, ready to save as a PDF.
Principal, rate and term in; the monthly payment and a full payment-by-payment schedule out.
Clock in and out for the week, add a rate, and get hours, overtime and pay totalled up.
Reformat, validate and reshape whatever you have pasted in.
Format, minify and validate JSON — and when it is broken, get told exactly where.
Convert between camelCase, snake_case, kebab-case, PascalCase, Title Case and CONSTANT_CASE.
Passwords and identifiers, made properly random.
Strong passwords and API keys from your browser’s cryptographic random source, never a server.
Generate version 4 random UUIDs, or version 7 time-ordered ones that sort by creation.
Turn data into another shape and back again — Base64, URLs, hashes, gzip and timestamps.
Convert text or a file to Base64 and back, with UTF-8 handled correctly.
Percent-encode a URL or a single query value, with the component and full-URI rules kept apart.
SHA-1, SHA-256, SHA-384 and SHA-512 for text or a file, computed in your browser.
Compress text or a file with gzip or deflate and see exactly how much smaller it got.
Convert a Unix timestamp to a real date and back, in seconds or milliseconds.
Convert between colour spaces and check a pairing is actually readable.
The schedule and reporting set — the files project teams actually get stuck with.
Read a schedule someone sent you, and find out whether it holds up.
Open a project schedule in the browser without a Microsoft Project or Primavera licence.
Run the DCMA 14-point assessment on a plan and get a plain-English pass or fail for each check.
Upload two versions of the same schedule and see exactly what moved, and by how many days.
The arithmetic behind a plan, without opening a scheduling tool.
Paste tasks and predecessors; get the critical path, total float and the real finish date.
Count working days between two dates with weekends and public holidays taken out.
Three-point estimates in; expected duration, standard deviation and a confidence range out.
Turn a task list into something you can put in front of people.
The registers every project keeps, minus the spreadsheet wrangling.
Keep risks, assumptions, issues and decisions in one register and export it to Excel.
Score risks by likelihood and impact and export the 5x5 grid straight into your deck.
Build a responsibility matrix and check it for the mistakes that make one useless.
Documents your sponsor will actually read.
Fill a short form and get a formatted weekly status report plus a matching email draft.
Answer ten questions and get a formatted charter your sponsor will actually read.
Budget, planned and actual in; SPI, CPI and EAC out, each with a plain-English verdict.
These tools answer a question about one file. PlanView keeps every version of a plan, scores its health as of the data date, explains what changed since the last update and builds the deck for you.
See PlanView