Free online calculatorsfor money, work, health, planning, learning, hobbies, and more.
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Finance Calculators
Free financial calculators for loans, mortgages, investments, ROI, and more.
Explore category→Health Calculators
Free health and fitness calculators for BMI, calories, body fat, and more.
Explore category→Time Calculators
Free time and date calculators for age, date differences, durations, and more.
Explore category→Business Calculators
Free business calculators for profit margins, break-even analysis, and more.
Explore category→Crypto Calculators
Free cryptocurrency calculators for profit, position sizing, and more.
Explore category→Math Calculators
Free math calculators for percentages, fractions, and more.
Explore category→Real Estate Calculators
Free real estate calculators for rental yield, affordability, and property decisions.
Explore category→Work Calculators
Free work calculators for pay, schedules, productivity, and day-to-day planning.
Explore category→Conversion Calculators
Free conversion calculators for temperature, units, and everyday value changes.
Explore category→Construction Calculators
Free construction calculators for materials, measurements, and project planning.
Explore category→Energy Calculators
Free energy calculators for power usage, running cost, and efficiency checks.
Explore category→Marketing Calculators
Free marketing calculators for conversion, campaign performance, and growth metrics.
Explore category→Sports Calculators
Free sports calculators for pace, performance, and training planning.
Explore category→Gaming Calculators
Free gaming calculators for stats, performance tracking, and session analysis.
Explore category→Salary & Tax Calculators
Free salary, paycheck, freelance rate, and simple tax calculators.
Explore category→Fitness Calculators
Free fitness calculators for calories, macros, body composition, hydration, and training targets.
Explore category→Education Calculators
Free education calculators for GPA, grades, exam targets, attendance, and study planning.
Explore category→Engineering Calculators
Free engineering calculators for electrical, mechanical, fluid, and materials basics.
Explore category→Pregnancy & Family Calculators
Free pregnancy and family calculators for due dates, ovulation, fertility, baby age, and leave planning.
Explore category→Ecommerce Calculators
Free ecommerce calculators for marketplace fees, profit, ROAS, CAC, AOV, and seller planning.
Explore category→Random Tools
Free random generators and utility tools for numbers, passwords, dates, colors, teams, and quick picks.
Explore category→Popular tools
Start with the calculators people use most
Contribution Margin Calculator
Estimate contribution margin per unit from selling price and variable cost inputs.
Cost Plus Pricing Calculator
Estimate markup from selling price and cost when using a cost-plus pricing approach.
Gross Margin Calculator
Estimate gross margin from revenue and cost so you can review product or service pricing quickly.
Gross Profit Calculator
Estimate gross profit in currency terms from revenue and direct cost inputs.
Markup Calculator
Estimate markup from selling price and cost so you can compare pricing strategy against direct cost.
Profit Margin Calculator
Calculate gross profit margin, net profit margin, and markup instantly.