60 free calculators
Free kitchen, garden & project calculators
Know exactly how much you need. Scale a recipe, convert cups to grams, swap a baking pan — or work out the compost, topsoil, mulch and seed your beds and lawn need, by the bag or the cubic yard. Plus concrete, paint and lumber for when the project is bigger. No sign-up, your numbers never leave your browser, works on your phone.
Browse by project
Pick what you are working on. Every calculator gives you quantities in the units things are actually sold or measured in, plus the supplies the job usually needs.
Cooking & Kitchen
Measurement conversion, recipe scaling and pan sizes.
- Cooking Measurement Converter
- Recipe Scaling
- Baking Pan Size Converter
- Coffee to Water Ratio
- Bread Hydration
- Pizza Dough
Garden & Yard
Compost, topsoil, mulch, seed, fertilizer and gravel.
Concrete & Masonry
Slabs, footings, pavers and base material.
Home Improvement
Paint, flooring, tile, drywall and roofing.
Woodworking & Building
Lumber, framing, decks, fences and stairs.
Property & Outdoor
Driveways, firewood, raised beds and snow.
Start here
See all 60 calculators →Recipe Scaling Calculator
Scale a recipe up or down by servings and convert each adjusted amount into cups, tablespoons, teaspoons, millilitres or grams.
Cooking Measurement Converter
Convert cups, tablespoons, millilitres, grams and ounces for flour, sugar, butter and other common ingredients.
Compost Calculator
Calculate how much compost you need to amend beds, top-dress a lawn or fill a planter.
Topsoil Calculator
Find how many cubic yards, tons or bags of topsoil you need to fill, level or top-dress an area.
Baking Pan Size Converter
Work out whether a recipe fits the pan you own, and how much to scale the batter when it does not.
Grass Seed Calculator
Calculate pounds of grass seed for a new lawn or an overseed, by grass type and area.
How it works
Start with what you know
A recipe and the pan you actually own, or the length, width and depth of a bed. Nothing to set up first.
See the assumptions
Every calculator defaults to the conventional figure — flour at 120 g a cup, mulch at three inches deep — and tells you which one it used.
Get a number you can use
Grams and cups, or cubic yards, bag counts and cost. Whatever the recipe or the supplier actually asks for.
Why trust these numbers?
Every calculator shows its working. Each page lists the cup weight, material density, coverage rate or bag yield it used, and where that figure comes from — so you can check it against your cookbook or your supplier's quote instead of taking a black box on faith.
Read how we calculate →- No account needed
- Nothing to sign up for and nothing saved. Your measurements stay in your browser.
- Imperial and metric
- Switch between feet and metres at any point without re-typing anything.
- Shareable results
- Copy a link that reopens the calculator with your numbers already filled in.
- Built for the kitchen and the yard
- Fast on a phone with floury hands or muddy boots.