Recipe Scaler
Scale any recipe up or down with exact measurements
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The cookie recipe makes twelve and you need thirty. Do you multiply everything by two and a half, including the egg, the baking soda and the tin size? The Recipe Scaler does the conversion properly, rounds it to measurements you can actually use, and tells you which ingredients do not scale in a straight line.
Short answer: Recipe Scaler is a free AI tool on EizTools that scales any recipe up or down with exact converted quantities, kitchen friendly rounding, adjusted cook times and a warning on the ingredients that do not scale evenly.
What is Recipe Scaler?
It is a conversion workspace for quantities. You paste in the recipe and say what yield you want. It returns the scaled version, optionally alongside the original, in whichever unit system you work in.
The reason it exists rather than a calculator is the rounding and the exceptions. Two and a half eggs is not a quantity, and doubling salt, yeast or chilli rarely gives you double the result.
How Does Recipe Scaler Work?
- Paste the recipe into the prompt box and say the yield you want, such as scaling twelve servings to thirty.
- Select the model family above, which is grouped by provider and switchable between runs.
- Open the advanced options accordion and set the unit system, rounding and recipe type.
- Press Generate. The scaled recipe appears in the output card, headed by the model that produced it.
- Copy it, or export as TXT, Word or HTML to print for the kitchen.
Every conversion stays in the activity history panel, so scaling the same recipe two different ways for two different occasions is a matter of scrolling rather than starting again.
Units, Rounding And Recipe Type
| Option | What it controls | Start with |
|---|---|---|
| Recipe Type | Baking (Precise), Cooking (Flexible), Beverage / Batch, Sauce or Dressing or Dough | The truthful one, since it decides how strict the maths is |
| Rounding Style | Practical / Kitchen-Friendly, Exact Math, Round to Whole or Nearest Common Measure | Practical / Kitchen-Friendly for most cooking |
| Unit System | US Customary, Metric, Both, Weight (Grams) or As Written | Weight (Grams) for baking, since scales beat cups |
| Output Format | Simple List, Original vs Scaled Table, Grouped by Step or Ingredients Only | Original vs Scaled Table, so you can check the working |
Four toggles do the careful work: adjust cook times too, flag hard to scale items, show original quantities and add scaling notes. The flagging toggle is the one worth leaving on permanently, because it marks leaveners, salt, spices and anything else that needs judgement. The Output Detail slider runs from bare quantities to a fully explained conversion.
Caution Cooking times do not scale with quantity. A doubled tray bake needs longer, a doubled stew barely changes, and a doubled cake in the same tin may not cook through at all. Read the notes before you trust the timer.
Baking Scales Differently To Cooking
Setting Recipe Type correctly is the single most useful thing you can do here. Baking is chemistry with a tolerance of a few grams. A stew is not.
Weight over volume
Set Unit System to Weight (Grams) for baking. Scaled cup measures accumulate error fast, and grams do not.
Leaveners flagged
Baking powder, soda and yeast rarely scale linearly. The flag tells you where to use judgement.
Tin and pan sizes
Doubling a mixture without changing the tin changes the depth, the bake time and often the result.
EizTools is free to use with no strings, gives every job its own tool and its own options, and leaves the choice of AI model family entirely to you. Light and dark mode are both supported across the site. If the recipe you are scaling also needs tidying, the Recipe Card Rewriter puts it into a clean card first.
Frequently Asked Questions
How does it handle eggs?
By weight where it can, since an egg is roughly fifty grams without shell. Recipe Scaler suggests a practical rounding and flags it, rather than telling you to use two and a half eggs.
Does it adjust cooking times?
Switch on adjust cook times too and it gives revised estimates with an explanation. Treat them as starting points, because pan size and oven behaviour matter more than quantity does.
Can it convert between cups and grams?
Yes. Set Unit System to Metric or Weight (Grams) and it converts as it scales. Flour especially is worth converting, since a cup of it varies by how it was packed.
Can I scale a recipe down?
Absolutely, and it is often harder than scaling up. Small quantities round badly, so keep the flagging toggle on and expect notes on the ingredients that do not divide neatly.
Scaling looks like arithmetic and behaves like cooking. Getting the units right, rounding to something you can measure and knowing which ingredients need judgement is what stops a doubled recipe from being twice as much of a disappointment.
Paste your recipe in, say the yield you need, and read the flagged items before you start weighing.
Sabir Bepari
Founder of EizTools and a passionate AI enthusiast dedicated to building practical, user-friendly AI tools that simplify everyday tasks.
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