ToolRecipe

What do you need to get done?

Drop a file here

or .

Open an app

Follow a recipe

All recipes

Use one tool

All tools

ROI calculator

Calculate your return on investment (ROI) from what you put in and what you got back. Free ROI calculator online: it shows the profit and the return in percent, and the yearly rate if you add the years. Your numbers stay in your browser.

How to calculate ROI

  1. 1Enter the amount invested and the amount returned
  2. 2Add the number of years if you want a yearly rate
  3. 3Read the ROI, the profit and the yearly rate
  4. The return in percent, the profit and an optional yearly rate.

What you get

  • Nothing is uploaded.The sum runs in your browser. Your numbers are never sent anywhere.
  • Percent and money.See the return in percent and the profit in your currency.
  • Yearly rate is optional.Fill in the years to get the CAGR as well.

What you can do

  • Get the ROI: profit divided by the amount invested.
  • See the profit in euros, dollars, pounds or Swiss francs.
  • Add "Over (optional)" years and get the yearly return (CAGR) too.
  • Use it for shares, a property, an ad campaign or any spend with a payoff.

Good to know

  • The amount invested must be above zero.
  • ROI does not take time into account. Fill in the years to compare projects of different length.
  • Fees and taxes count only if you include them in your two amounts.
  • It is an estimate from your own numbers, not financial, tax or investment advice.

Questions

How is ROI calculated?

Profit (returned minus invested) divided by the amount invested, shown as a percentage. 2,000 in and 2,500 out gives 25%.

Can ROI be negative?

Yes. If you get back less than you put in, the profit and the ROI are negative.

What is the yearly figure?

The compound annual growth rate over the years you enter. It makes a 3 year and a 7 year investment comparable.

Is my data sent to a server?

No. The calculation happens in your browser.

How it works

Small tools that run in your browser.

Four steps

  1. Start with a file or a task

    Drop a file, search, or pick a task.

  2. The tool opens in a window

    Open as many as you like, side by side as tabs.

  3. Results collect on the right

    Drag a result into the next tool.

  4. Save when you're done

    Saved files go to your downloads.

Who uses what

Tool sets for common jobs.

Put a tool on your home screen

The icon opens that tool, like an app.

iPhone and iPad

  1. Open the tool in Safari.
  2. Tap Share (the square with the arrow).
  3. Choose “Add to Home Screen”, then Add.

Android

  1. Open the tool in Chrome.
  2. Tap the menu (⋮) at the top right.
  3. Choose “Add to Home screen” or “Install app”.

Computer

  1. Open the tool in Chrome or Edge.
  2. Click the install icon in the address bar.
  3. Choose Install.

Skills

Claude skills we use ourselves, one job each.