Concrete Slab Volume Calculator
Planning a concrete slab project.
Free Online Calculators — Construction, Health, Finance & More
49+ accurate calculators for concrete, flooring, wood, paint, 3D printing, BMI, mortgages and more. Fast, mobile-friendly, no signup required.
Featured Calculators
Most popular free calculators — try one now
Flooring Area Calculator
Installing new flooring.
Board Feet Calculator
Board feet is the standard unit of measurement for lumber — especially hardwoods, specialty woods, and rough-sawn boards.
Paint Coverage Calculator
Determining how much paint to buy is the first step in any interior or exterior painting project.
3D Printing Filament Weight Calculator
Planning a 3D printing project and wondering how much material you'll need.
BMI Calculator - Body Mass Index
The Body Mass Index (BMI) is a simple, widely-used tool to estimate whether a person has a healthy body weight for th…
Explore by Category
Find the right calculator for your project
Concrete
Calculate volumes, costs, and material quantities for concrete slabs, columns, footings, and more.
10 calculators →Flooring
Estimate materials needed for hardwood, tile, laminate, and vinyl flooring projects.
2 calculators →Wood
Board feet, lumber dimensions, and wood project material calculators.
1 calculator →Paint
Calculate paint coverage and estimate the amount needed for interior and exterior projects.
1 calculator →3D Printing
Estimate filament usage, print time, and costs for your 3D printing projects.
1 calculator →Health & Fitness
Calculate BMI, ideal weight, body fat percentage, and other fitness metrics to track your health.
7 calculators →Finance & Mortgage
Calculate mortgage payments, loan amortization, compound interest, and personal finance metrics.
7 calculators →General Calculators
Everyday calculators for percentages, tips, discounts, and common math problems.
9 calculators →Developer Tools
Timestamp converters, number base converters, and other handy utilities for developers.
3 calculators →Unit Conversion
Convert between metric and imperial units for weight, length, area, volume, and more.
8 calculators →All Calculators
Browse our complete collection of free online calculators
Concrete
Concrete Slab Volume Calculator
Planning a concrete slab project.
Concrete Slab Cost Calculator
Getting an accurate cost estimate is a critical first step for any concrete slab project.
Concrete Bags Calculator
Bagged concrete is the go-to choice for small to medium DIY projects — from setting fence posts and building small pa…
Concrete Column Calculator
Concrete columns provide vertical structural support in everything from residential decks and patios to commercial bu…
Concrete Footing Calculator
A proper concrete footing is the foundation of any structure — it spreads the building's weight across the soil below…
Gravel Calculator - Volume & Tons Needed
Estimate how much gravel, crushed stone, sand, or topsoil your project needs with our Gravel Calculator.
Brick Calculator - How Many Bricks You Need
Estimate the number of bricks your wall project needs with our Brick Calculator.
Drywall Calculator - Sheets Needed
Estimate how many drywall sheets your room needs with our Drywall Calculator.
Mulch Calculator - Bags & Cubic Yards Needed
Work out how much mulch your garden beds need with our Mulch Calculator.
Roofing Calculator - Squares & Bundles Needed
Estimate the shingles your roof needs with our Roofing Calculator.
Health & Fitness
BMI Calculator - Body Mass Index
The Body Mass Index (BMI) is a simple, widely-used tool to estimate whether a person has a healthy body weight for th…
BMR Calculator - Daily Calorie Needs (TDEE)
Knowing how many calories your body burns each day is the foundation of any weight management plan.
Calories Burned Calculator - Exercise MET Values
Find out how many calories you burn during any workout with our Calories Burned Calculator.
Body Fat Calculator - US Navy Method
Estimate your body fat percentage using the US Navy tape method — the same formula used for military fitness standard…
Ideal Weight Calculator - Devine Formula
Estimate your ideal body weight with our Ideal Weight Calculator using the Devine formula — the most widely cited ide…
Water Intake Calculator - Daily Hydration
Find out how much water you should drink each day with our Water Intake Calculator.
Running Pace Calculator - Pace & Speed
Calculate your running pace and speed with our Running Pace Calculator.
Finance & Mortgage
Mortgage Calculator - Home Loan
Buying a home is one of the biggest financial decisions you'll ever make.
Deposit Calculator - Savings & Fixed Deposits
Planning to open a savings account, certificate of deposit (CD), or fixed deposit.
Auto Loan Calculator - Car Payment Estimator
Buying a car is likely the second-largest purchase you'll ever make, and getting the loan details right matters enorm…
Sales Tax Calculator - Add or Remove Tax
Add or remove sales tax from any price with our Sales Tax Calculator.
VAT Calculator - Add or Remove VAT
Add or remove VAT from any price with our VAT Calculator — the everyday tool for businesses and shoppers in VAT count…
ROI Calculator - Return on Investment
Measure how hard your money worked with our ROI Calculator.
Retirement Calculator - Savings Projection
See where your retirement savings are heading with our Retirement Calculator.
General Calculators
Percentage Calculator
Percentage calculations are everywhere in daily life — from sales discounts and tip amounts to interest rates and tes…
Tip Calculator - Split the Bill
Split the bill with confidence using our Tip Calculator.
Discount Calculator - Sale Price Finder
Shopping a sale and wondering if you're getting a good deal.
Age Calculator - Exact Age in Years, Months, Days
Find out your exact age in years, months, and days with our Age Calculator.
Word Counter - Words, Characters, Sentences
Count words, characters, sentences, and paragraphs instantly with our free Word Counter.
Date Difference Calculator - Days Between Dates
Calculate the exact difference between any two dates with our Date Difference Calculator.
Password Generator - Strong Random Passwords
Create strong, random passwords with our Password Generator.
Case Converter - UPPERCASE, lowercase, Title Case
Convert text case instantly with our Case Converter.
Color Converter - HEX, RGB, HSL
Convert any color between HEX, RGB, and HSL formats with our Color Converter.
Developer Tools
Timestamp Converter - Unix Epoch & Date Time
Working with timestamps is a daily task for developers across all stacks.
Number Base Converter - Binary, Octal, Decimal, Hex
Number base conversion is one of those fundamental skills every developer needs but rarely wants to do by hand.
Image Format Converter — PNG, JPG, WebP
Our Image Format Converter lets you change image file types in seconds — right in your browser.
Unit Conversion
Weight Converter - kg, lbs, oz, g
Quickly convert weight units between metric and imperial systems.
Length Converter - m, ft, in, cm, mm, miles
Convert any length or distance between metric and imperial units instantly.
Area Converter - sq m, sq ft, acres, hectares
Convert area measurements between metric and imperial systems with precision.
Volume Converter - liters, gallons, cups, ml
Convert volume measurements across metric and imperial systems, including both US and UK fluid units.
Temperature Converter - Celsius, Fahrenheit, Kelvin
Convert temperature between Celsius, Fahrenheit, and Kelvin in a single step.
Data Size Converter - KB, MB, GB, TB
Convert digital storage and data size units instantly with our Data Size Converter.
Speed Converter - km/h, mph, m/s, knots
Convert speed between the units used worldwide: km/h, mph, meters per second, knots, and feet per second.
Fuel Consumption Converter - L/100km, MPG
Convert fuel consumption between L/100km, US MPG, UK MPG, and km/L with our Fuel Consumption Converter.
Why MateCalc? Trusted Online Calculators
MateCalc provides free, accurate online calculators for construction professionals, DIY enthusiasts, homeowners, and health-conscious individuals. Whether you're planning a concrete pour, estimating paint for your living room, checking your BMI, or shopping for a mortgage, our calculators give you reliable numbers you can trust.
All our tools use standard industry formulas and are regularly reviewed. We support both metric and imperial units, making our calculators useful worldwide. Every calculator works instantly on any device — desktop, tablet, or smartphone — with no app downloads, sign-ups, or hidden costs.
✓ 100% Free Forever
No trials, no subscriptions, no paywalls. Every calculator on MateCalc is completely free to use, forever.
✓ Professional Accuracy
Formulas reviewed by construction and financial professionals. Regional pricing data updated regularly.
✓ Mobile Friendly
Responsive design works perfectly on phones, tablets, laptops, and desktops. No app needed.
✓ Privacy First
No account required, no personal data collected, no tracking cookies. Use directly in your browser.
Frequently Asked Questions
Are these calculators accurate?
Yes. All calculators use standard industry formulas and are regularly reviewed by professionals. However, results are estimates and should be verified with local building codes and material specifications before use.
Do I need to sign up or create an account?
No. All calculators are completely free to use and require no registration, signup, or login. Simply open the page and start calculating.
Can I use these calculators on my phone?
Absolutely. Every calculator is fully mobile-responsive and works on any smartphone or tablet with a modern browser. No app download required.
What units of measurement are supported?
Most calculators support both metric (mm, cm, m, kg) and imperial (in, ft, yd, lb) units. Results are shown in both systems where applicable.
How often are these calculators updated?
Our calculation formulas and regional pricing data are reviewed and updated regularly to ensure accuracy. We also add new calculators based on user feedback.
Can I request a specific calculator?
Yes! We regularly add new tools based on user requests. Visit our Contact page and let us know what calculator you need — we'll try to build it for you.