210 free calculators
Every calculation you need, in one place.
Money, health, work, home and everyday math. Search for what you want to work out and get an answer in seconds — no sign-up.
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Featured calculators
Worked examples — open one and change the numbers.
- Mortgage Calculator$300,000 home · 20% down · 6.5% · 30 yrs$1,517/moprincipal & interestTry it with your numbers
- Compound Interest Calculator$10,000 · 8% a year · 10 years$21,589after 10 yearsTry it with your numbers
- BMI Calculator70 kg · 175 cm22.9Normal WeightTry it with your numbers
- Percentage CalculatorWhat is 20% of 450?9020% of 450Try it with your numbers
Most used
- Random Number GeneratorGenerate random numbers in any range, with no-repeat and sort options
- Profit Margin CalculatorMargin from cost and revenue, equivalent markup, and target-margin pricing
- Concrete CalculatorCubic yards and bags of concrete for a slab, footing, or column
- Garden Planning CalculatorCalculate plants, seeds, soil, and fertilizer for your garden
- Calorie CalculatorCalculate daily calorie needs (BMR & TDEE) using Mifflin-St Jeor
- Word CounterCount words, characters, sentences, and paragraphs with reading time
- Markup CalculatorPrice from cost and markup, with a markup-to-margin reference table
- Square Footage CalculatorTotal area across rooms in sq ft and m², with cost per square foot
- Moving Cost CalculatorEstimate moving costs for local, long-distance, or DIY moves
- Loan CalculatorCalculate monthly payments for personal, auto, or business loans
- TDEE CalculatorTotal daily energy expenditure and calorie targets by activity level
- kg to lbs ConverterConvert kilograms to pounds and back — 1 kg = 2.20462 lbs
Common questions
- How much house can I afford?Home Affordability
- How much will my investment grow?Compound Interest
- What is 20% of 450?Percentage
- How many calories should I eat a day?Calorie
- What will my monthly loan payment be?Loan
- How old am I exactly?Age
- What's my paycheck after tax?Take-Home Pay
- How long until I'm debt-free?Debt Payoff
- Is my weight healthy for my height?BMI
- When is my baby due?Pregnancy Due Date
Browse by category
210 calculators across 10 categories.
Finance
All 45Health & Fitness
All 30Utility & Math
All 55Business
All 17Real Estate
All 16Lifestyle
All 16Automotive
All 7Energy & Sustainability
All 8Transportation & Logistics
- Freight Class Calculator
- Mileage Reimbursement Calculator
- Dimensional Weight Calculator
- Commute Cost Calculator
Agriculture & Farming
- Fertilizer Application Calculator
- Grain Bin Capacity Calculator
- Hay Feeding Calculator
- Plant Population Calculator
Collections
Calculators grouped by the job you're doing, across categories.
Buying a home
From what you can afford to what you'll pay each month.
Growing your money
See what saving and investing add up to over time.
Getting fit
Body measurements, daily energy needs and training targets.
Running a business
Price your work, protect your margin and plan for tax.
Getting out of debt
Build a payoff plan and see how fast it clears.
Planning a wedding
Set the budget, split it across vendors and plan the party.
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