Recipe scaler
Paste ingredients with quantities, set servings, get scaled amounts including fractions.
Runs in this tab. The file stays here.
Scaled ingredients
2 1/4 cups flour 3 eggs 1 1/8 cup sugar 1 1/2 tsp salt
This runs in your browser. Nothing is uploaded.
About Recipe scaler
Scale a pasted ingredient list between servings, including mixed fractions like 1 1/2 cups.
This recipe scaler stays in the tab. Nothing is uploaded to ihateonlinetools.com for the calculation. That is the same offline promise as the rest of the site: your numbers, caption, or recipe never need to sit in a third-party form log.
Paste one ingredient per line with a leading quantity. Mixed fractions such as 1 1/2 are parsed, multiplied by the servings ratio, and printed back simplified. Lines without a leading number pass through unchanged.
Set original and target servings. Scaling does not rewrite units or convert cups to grams; pair it with the cooking converter when you need that. Related tools on this site cover nearby jobs without forcing a signup wall.
How to use Recipe scaler
- 1Open /home/recipe-scaler/ and check the side-panel defaults.
- 2Enter your values or paste your list; the main pane updates.
- 3Copy the result if you need it elsewhere. Closing the tab clears local state unless noted.
What it won't do
- Not professional advice and not a hosted account product.
- Garbage in, garbage out: wrong inputs yield wrong outputs.
Common questions
Does recipe scaler upload anything?
No. Inputs and outputs stay in the browser process. Sharing features that exist, such as countdown links, only put values you choose into the URL on your device.
What formula or method does recipe scaler use?
Paste one ingredient per line with a leading quantity. Mixed fractions such as 1 1/2 are parsed, multiplied by the servings ratio, and printed back simplified. Lines without a leading number pass through unchanged.
When should I not rely on recipe scaler alone?
When a clinician, building code, platform policy, or teacher requires a signed process. This page is a calculator and explainer, not a certificate.
Is recipe scaler free and offline-capable?
Yes. After the static page loads, the logic runs without calling an external compute API. Return visits may use the service worker cache for the shell.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation