Everything runs in your browser — nothing is uploaded. If you are new to the tool, follow these steps in order.
1
See what the tool can do
Press 📊 Load Sample Data to fill the tool with sample variation orders. Then scroll down the page:
- Project Setup and Report Info — project, client, original contract value and currency.
- Register Summary — approved, pending and rejected values and the revised contract value.
- Variation Order Register — the table of variations with status, value, dates and time impact.
- Charts — VO value by status, and the cumulative contract value trend.
The first time you open the tool (when there is no data of yours in this browser) the sample is loaded for you, so you can see how it works straight away. Replace it with your own entries, press + New Project / Clear All to start empty, or load your saved project.
Load Sample Data replaces the data in the tool. Save your own work first.
2
See how the data file looks
Press ⬇ Export Table (.csv). It downloads the register as a CSV file that opens in Excel:
| Column | What to enter | Example |
|---|
| VO No. | Your reference | VO-003 |
| Description | What changed (required) | Additional culvert at Ch 4+200 |
| Status | Proposed, Submitted, Approved or Rejected | Approved |
| VO Value | Plain number; negative for omissions | 125000 |
| Date Raised | A date | 2026-03-14 |
| Approval Date | A date; blank if not approved | 2026-04-02 |
| Time Impact (d) | Extra days, or 0 | 14 |
| Cumulative Contract Value | Worked out by the tool; ignored on import | — |
3
Enter your own data and import it
Replace the sample rows with your own variations. You can import the Excel file (.xlsx) directly, or a CSV. Then press ⬆ Import Table (.csv) and choose the file.
- Columns are matched by their heading names, so keep the headings (their order does not matter).
- Choose the Date Format (import) in Project Setup to match your file, or leave it on Auto-detect.
- Import replaces all variations. The project setup is kept.
4
Add, edit and delete rows
You can also work straight in the table on the page at any time, with or without a CSV:
- + Add Variation adds a new row. Click any cell to change it.
- The ✕ at the end of a row deletes that variation straight away. There is no undo, so save your project first.
5
Attach the scanned variation order
Each row of the Variation Order Register has a Scan column for one scanned copy or photo — for example the signed variation order or instruction. It can be a PDF (all its pages) or an image (JPG, PNG):
- 📎 (faint) — nothing attached yet. Click it and choose the file.
- 📄 (highlighted) — a file is attached. Click it to see it in a pop-up, where you can Replace, Remove or Download it.
- Large photos and scanned images are reduced automatically to keep the project file small; a PDF must be under 5 MB.
- The file is kept in the project file when you save the project, and comes back when you load it. It is not uploaded anywhere.
Autosave in this browser keeps the details but not the attached files (the browser has too little room). Save the project to keep them.
6
Save your project and open it later
💾 Save Project (.json) saves the project setup and all variations in one .json project file. 📂 Load Project opens that file again, on any computer.
The note beside the Save button tells you whether you have unsaved changes or when you last saved. If you try to close or leave the page with unsaved changes, the browser asks you to confirm first (not needed when Autosave is ticked, because your work is kept in this browser).
Use the project file for backups and for sharing with colleagues. Don't edit it by hand.
7
Print, PDF and report
- 🖶 Print / Save as PDF prints the page as you see it, in print-friendly colours. To get a PDF, choose Save as PDF as the printer in the print dialog.
- 📄 Generate Report opens a change order report in a new tab, where you can print it or save it with ⇩ Download HTML. If nothing opens, allow pop-ups for this site.
8
Other buttons and options
- Autosave in this browser (tick box) — while ticked, your work is kept automatically in this browser and comes back the next time you open the page. It stays only on this computer and browser. It is not a backup; use Save Project for that.
- 👁 View Current Data shows the whole register in a window, where Copy as CSV copies it for Excel.
- + New Project clears the project setup and all variations (it asks first).
- Clear All removes all variations but keeps the project setup (it asks first).
9
Choose the date format
Press 📅 Date format in the toolbar and choose how dates are shown and typed in every date box: DD/MM/YYYY, MM/DD/YYYY, YYYY-MM-DD, DD-MM-YYYY, DD.MM.YYYY or DD-Mon-YYYY. Type a date in that format, or click the 📅 in a date box to pick it from a calendar. A date that doesn't fit the format is outlined in red and not accepted.
The same format is used in the printout and in the generated report and its PDF. It changes only how dates look — your saved project and CSV files are not affected. Your choice is remembered in this browser for every tool on this site.
10
Explore the other tools
Press ☰ All Tools at the top of the page to see every engineering, project management and AI tool on this site, in the same order as the homepage. Type in the search box to find one quickly, then click it to open it. The tool you are using is marked you are here.
The Related tools links at the bottom of this page lead to tools that are often used together with this one.