Compare up to three options side by side to understand what changes.
SMALL TOOLS. BIG LITTLE ANSWERS.
Free online calculators.
For everyday life.
See your numbers. Compare your options. Save your plan.
Free tools for baking, business, study, hobbies and home projects.
Free to use ✧ 17 useful tools ✧ Calculated on your device
Explore clear result charts, save scenarios, and take your results away as a CSV or print report.
Explicit units, repeatable formulas and examples. No account needed.
YOUR EVERYDAY TOOLKIT
Find your calculator
Construction
Concrete Volume Calculator — m³ & Cubic Yards
Plan a rectangular slab with metric or US units and an extra-material allowance.
Order with a clear quantityOpen calculator
Construction
Flooring & Tile Calculator — Area, Boxes & Cost
Subtract openings, add cutting waste and round your purchase up to full boxes.
Know how many boxesOpen calculator
Construction
Paint Calculator — Wall Area, Litres & Cans
Estimate wall paint, coats and whole cans using the coverage on your chosen paint.
Finish the roomOpen calculator
Astrology
Sun Moon Rising Calculator
Meet your Big Three with a chart based on your birth details.
Your cosmic starting pointOpen calculator
Astrology
Birth Chart Compatibility Calculator
Explore two sets of Sun, Moon and Rising placements side by side.
A conversation starterOpen calculator
Cooking
Pizza Dough Calculator
Find your flour, water and yeast balance for pizza night.
A better batchOpen calculator
Cooking
Cake Pricing Calculator
Include ingredients, your time and a profit margin worth baking for.
Price your craftOpen calculator
Cooking
Recipe Scaling Calculator
A dinner for two or a table of twelve. Get every quantity right.
Make room for everyoneOpen calculator
Business
Etsy Profit & Fee Calculator
See what stays in your pocket after costs and editable seller fees.
Know your real marginOpen calculator
Business
Product Pricing Calculator
Work backwards from your costs to a sustainable selling price.
Make your numbers workOpen calculator
Business
Marketplace Fee Comparison Calculator
Compare three selling channels using your actual fee schedules.
Find your best fitOpen calculator
Hobbies
Pokémon Damage Calculator — Gen 9 Baseline
Compare attack damage with the established Smogon calculation engine.
Plan your next moveOpen calculator
Hobbies
Photo Print Size Calculator — Pixels to Inches & cm
Turn image pixels into a print size with a clear resolution target.
From screen to frameOpen calculator
Hobbies
Minecraft Crafting Calculator — Materials & Batches
Plan batches, ingredients and leftovers for your next project.
Gather once. Craft more.Open calculator
Education
Final Grade Calculator — Required Exam Score
Find the exam score you need to reach your target course grade.
A goal you can plan forOpen calculator
Education
UK Degree Classification Calculator
Estimate your weighted average with your own year weightings.
See the bigger pictureOpen calculator
Education
Linear Interpolation Calculator
Find a value between two known points, with the working shown.
Fill in the missing pieceOpen calculator
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GUIDES & ARTICLES
Get more from your numbers.
Learn how to plan a pizza batch, price your work, or set a study target.
Understand the answer, not just the number.
Every calculator includes its method, a worked example and practical limitations.