All Calculators

Browse our complete collection of 95 calculators

Showing 95 calculators

Date & Time

(7)

Age Calculator

Calculate your exact age in years, months, days, and more

Date Difference Calculator

Calculate the exact time between two dates in various units

Working Days Calculator

Calculate business days between dates, excluding weekends and holidays

Time Duration Calculator

Calculate duration between two times in hours, minutes, and seconds

Date Calculator

Add or subtract days, weeks, months, and years from any date

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates

Week Number Calculator

Calculate ISO week numbers from dates or find dates from week numbers

Health & Fitness

(12)

BMI Calculator

Calculate your Body Mass Index to determine if you're at a healthy weight

Calories Burned Calculator

Estimate calories burned during various activities based on duration and body weight

VO2 Max Calculator

Estimate your cardiovascular fitness level using heart rate or running performance

TDEE Calculator

Calculate your Total Daily Energy Expenditure to determine caloric needs

1RM Calculator

Estimate your one-rep max for strength training exercises

Body Fat Calculator

Estimate your body fat percentage using body measurements

Cardiac Output Calculator

Calculate cardiac output using the Fick equation for medical assessment

Ovulation Calculator

Track fertility windows, ovulation dates, and menstrual cycles for family planning

Calorie Deficit Calculator

Calculate your optimal calorie deficit for safe and sustainable weight loss with personalized macro targets

Macronutrient Calculator

Calculate optimal protein, carbs, and fat intake based on your fitness goals

Sleep Debt Calculator

Track accumulated sleep debt and calculate recovery time needed

Pregnancy Weight Gain Calculator

Track healthy weight gain during pregnancy with trimester-specific recommendations

Mathematics

(12)

Percentage Calculator

Calculate percentages, percentage changes, and solve percentage problems

Fraction Calculator

Add, subtract, multiply, and divide fractions with step-by-step solutions

Percentage Increase/Decrease Calculator

Calculate percentage change between two values or find value after percentage change

Area Calculator

Calculate area and perimeter for various geometric shapes

Volume Calculator

Calculate volume and surface area of 3D shapes including cubes, spheres, cylinders, and more

Average Calculator

Calculate mean, median, mode, range, and other statistical measures

Square Root Calculator

Find square roots with step-by-step solutions for any number

Exponent Calculator

Calculate powers and exponents with step-by-step solutions and explanations

Polynomial Calculator

Add and subtract polynomials with step-by-step solutions - perfect for students learning algebra

Prime Number Checker

Check if a number is prime or composite with factors and prime factorization

LCM and GCF Calculator

Calculate Least Common Multiple and Greatest Common Factor of multiple numbers

Algebraic Expression Solver

Solve simple algebraic expressions and linear equations with step-by-step solutions

Finance

(10)

Tip Calculator

Calculate tips and split bills easily among friends

Loan Calculator

Calculate loan monthly payments and total interest

Mortgage Calculator

Calculate mortgage payments with principal, interest rate, and term

Savings Calculator

Calculate future value of savings with compound interest over time

Compound Interest Calculator

Calculate compound interest on investments with time-based growth

Inflation Calculator

Calculate purchasing power changes over time and compare historical prices to current values

Meeting Cost Calculator

Calculate the monetary cost of meetings based on attendee salaries and duration

Retirement Savings Calculator

Calculate how much you need to save for retirement and plan your financial future

Child Support Calculator

Estimate child support payments based on state guidelines and income

Lease vs Buy Car Calculator

Compare total costs of leasing vs buying vehicles with depreciation and financing analysis

Tax & Salary

(4)

Net Salary Calculator

Calculate your take-home pay after taxes, deductions, and contributions

Hourly to Salary Calculator

Convert hourly wage to annual salary with overtime and deductions

Freelance Tax Calculator

Estimate taxes for freelancers and self-employed individuals

401(k) Retirement Calculator

Calculate 401(k) growth, employer match, and retirement savings projections

Real Estate & Rent

(5)

Real Estate Mortgage Calculator

Comprehensive mortgage calculator with property taxes, PMI, and full cost breakdown

Rent Affordability Calculator

Determine how much rent you can afford based on income, debt, and expenses

Property Tax Estimator

Calculate property taxes by state or with custom rates, including exemptions

Cash-on-Cash Return Calculator

Calculate annual return on cash invested in real estate properties

Rent vs Buy Calculator

Compare the long-term costs of renting versus buying a home to make an informed decision

Tech & Digital

(7)

Data Transfer Time Calculator

Calculate download and upload times based on file size and internet speed

DPI/PPI Converter

Convert between DPI/PPI, pixels, and physical dimensions for displays and images

Bandwidth Calculator

Calculate data usage and bandwidth requirements for streaming and downloads

Electricity Cost Calculator

Calculate electricity costs for appliances based on wattage, usage hours, and rates

Electricity Bill Calculator

Estimate monthly electricity bills with tiered rates, time-of-use pricing, and utility comparisons

Password Strength Calculator

Test password strength and generate secure passwords with entropy analysis

Solar Panel Calculator

Calculate potential savings, ROI, and environmental impact for solar installations

Shopping & Discounts

(3)

Discount Calculator

Calculate sale prices, discount percentages, and savings on purchases

Price Per Unit Calculator

Compare prices of different package sizes to find the best value

Sales Tax Calculator

Calculate sales tax, find tax rates, or determine pre-tax amounts

Travel & Distance

(5)

Fuel Cost Calculator

Calculate fuel costs for trips based on distance, fuel efficiency, and gas prices

Distance Between Cities

Calculate the distance between two cities with driving, flight, and straight-line distances

Time Zone Converter

Convert time between different time zones for travel planning and international meetings

Carbon Footprint Calculator

Calculate your annual carbon footprint from transportation, home energy, and diet choices

Historical Weather Calculator

Find out what the temperature was on any date in the past for any city worldwide

Construction & DIY

(7)

Paint Quantity Calculator

Calculate how much paint you need for walls, ceilings, and rooms with multiple coats

Concrete Volume Calculator

Calculate concrete needed for slabs, columns, footings, and other structures

Tile & Flooring Estimator

Calculate tiles, flooring materials, and waste for any room layout

Concrete Mix Calculator

Calculate concrete mix ratios for different strengths - essential for DIY and construction projects

Drywall Mud Calculator

Calculate joint compound needed for drywall finishing and taping

Pool Volume Calculator

Calculate pool water volume and chemical requirements for different pool shapes

Pool Chemical Calculator

Calculate exact chemical amounts needed to balance pH, chlorine, alkalinity, and other pool water parameters

Education & Learning

(4)

GPA Calculator

Calculate your Grade Point Average based on course grades and credit hours

Grade Percentage Calculator

Calculate your grade percentage and letter grade from points earned

Exam Score Needed Calculator

Calculate the exam score you need to achieve your desired final grade

AP Exam Score Calculator

Calculate your predicted AP exam score based on multiple choice and free response performance

Animals & Pets

(3)

Horse Coat Color Calculator

Predict foal coat colors based on parent genetics with probability calculations

Dog Age Calculator

Convert dog years to human years based on breed size with health insights

Pet Cost Calculator

Calculate the total cost of pet ownership including initial, monthly, and lifetime expenses

Tailoring & Sewing

(6)

Fabric Yardage Calculator

Calculate how much fabric you need for sewing projects based on garment type and size

Seam Allowance Calculator

Calculate seam allowances for different garment types, fabrics, and construction methods

Pattern Grading Calculator

Grade sewing patterns between sizes with accurate measurements for professional results

Sewing Unit Converter

Convert between common sewing and tailoring measurements - inches, centimeters, yards, meters, and more

Thread & Needle Guide

Find the right thread type, needle size, and stitch settings for your fabric and project

Body Measurements Converter

Convert all body measurements at once between inches and centimeters - neck, chest, waist, hips and more

Cooking & Kitchen

(5)

Recipe Scaling Calculator

Scale recipe ingredients up or down for different serving sizes - supports fractions and common measurements

Kitchen Unit Converter

Convert between cups, tablespoons, ounces, grams, and more cooking measurements

Baking Ratio Calculator

Calculate ingredient ratios for bread, pastries, and baked goods with weight and volume conversions

Food Cost Calculator

Calculate recipe costs and profit margins for restaurants and home cooking

Air Fryer Cooking Calculator

Convert oven recipes to air fryer times and temperatures with cooking presets

Sports & Recreation

(3)

Bowling Score Calculator

Calculate bowling scores frame by frame with automatic strike and spare handling

OSRS Dry Streak Calculator

Calculate the probability of going dry on rare drops in Old School RuneScape

Running Pace Calculator

Calculate pace, time, or distance for running with split times and training zones

SEO & Marketing

(2)

Keyword Golden Ratio Calculator

Calculate the Keyword Golden Ratio to find low-competition keywords that can rank quickly

Instagram Engagement Rate Calculator

Calculate your Instagram engagement rate and compare it to industry benchmarks