Calculator Directory
Search by topic or filter by category. Each calculator includes inputs, results, formulas, examples, FAQs, and related tools.
Finance
Everyday money calculators for loans, interest, savings, and planning.
Loan Payment Calculator
Estimate the monthly principal-and-interest payment for a fixed-rate loan, then compare how the amount borrowed, rate, and term affect repayment pressure.
Compound Interest Calculator
Project how a starting balance may grow over time when interest or returns compound, and test how rate, time, and compounding frequency change the ending estimate.
Mortgage Payment Calculator
Estimate a monthly mortgage payment from home price, down payment, rate, term, property tax, and insurance so you can separate the loan payment from broader housing costs.
Savings Goal Calculator
Estimate the monthly deposit needed to reach a target savings amount by a chosen date, including a simple interest-rate assumption when relevant.
Debt Payoff Calculator
Estimate how long a debt balance may take to pay off, how much you may pay in total, and how much interest may accumulate under a fixed monthly payment.
Emergency Fund Calculator
Estimate an emergency fund target from monthly expenses, desired coverage months, and current savings.
Debt-to-Income Ratio Calculator
Estimate debt-to-income ratio from monthly debt payments and gross monthly income.
Simple Interest Calculator
Calculate simple interest and total amount from principal, annual interest rate, and time.
Rent Affordability Calculator
Estimate a rent budget from gross monthly income and compare it with current monthly rent.
Monthly Budget Calculator
Estimate remaining monthly budget after income and common expense categories.
Savings Rate Calculator
Estimate savings rate from income and savings amount.
Net Worth Calculator
Estimate net worth from assets and liabilities.
Paycheck Savings Calculator
Estimate savings per paycheck and savings over multiple paychecks.
Annual Income Calculator
Estimate annual income from recurring pay amount and pay periods.
Expense Ratio Calculator
Estimate the share of income used by expenses.
Credit Card Interest Calculator
Estimate monthly credit card interest from balance and APR.
Loan-to-Value Calculator
Estimate loan-to-value ratio from loan amount and property value.
Down Payment Calculator
Estimate down payment amount and remaining loan amount from purchase price.
Subscription Cost Calculator
Estimate total subscription spending from monthly price, number of subscriptions, and months.
Health
Simple wellness calculators for body measurements and daily estimates.
BMI Calculator
Calculate body mass index from height and weight using metric or imperial units.
Calorie Estimate Calculator
Estimate daily maintenance calories using Mifflin-St Jeor with metric or imperial body measurements.
Water Intake Estimate Calculator
Estimate daily water intake from body weight using metric or imperial assumptions.
Protein Intake Estimate Calculator
Estimate daily protein target from body weight using metric or imperial assumptions.
Workout Calorie Estimate Calculator
Estimate workout calories from minutes and calories burned per minute.
Walking Distance Calculator
Estimate walking distance from steps and average step length using metric or imperial units.
Pace Calculator
Estimate pace from distance and time using metric or imperial units.
Sleep Duration Calculator
Estimate weekly sleep hours from average sleep per night.
Screen Time Calculator
Estimate screen time over a period from daily hours and days.
Habit Streak Calculator
Estimate completed habit sessions from days, completion rate, and sessions per day.
Steps to Miles Calculator
Estimate distance from steps and average step length using metric or imperial units.
Activity Time Calculator
Estimate total activity time from sessions, minutes per session, and weeks.
Math
Practical math calculators for percentages, ratios, and common conversions.
Percentage Change Calculator
Find the percent increase or decrease from an old value to a new value.
Tip Calculator
Calculate a tip, total bill, and split amount per person.
Distance Conversion Calculator
Convert kilometres to miles and miles to kilometres.
Temperature Conversion Calculator
Convert Celsius to Fahrenheit and Fahrenheit to Celsius.
Speed Conversion Calculator
Convert kilometres per hour to miles per hour and miles per hour to kilometres per hour.
Business
Business calculators for revenue, margins, pay estimates, and creator monetization.
Break-Even Calculator
Estimate the exact unit volume and revenue needed for an offer to cover fixed costs after per-unit costs are paid.
Profit Margin Calculator
Calculate profit and profit margin from revenue and cost.
Gross Profit Calculator
Estimate gross profit and gross profit margin from revenue and cost of goods sold.
Hourly to Salary Calculator
Estimate annual and monthly pay from hourly rate, weekly hours, and working weeks.
Salary to Hourly Calculator
Estimate an hourly rate from annual salary, weekly hours, and working weeks.
CPM Revenue Calculator
Estimate advertising revenue from impressions and CPM.
Markup Calculator
Estimate markup amount and selling price from cost and markup percentage.
Discount Calculator
Estimate discount amount and final price from original price and discount percentage.
Sales Tax Calculator
Estimate sales tax amount and total price from a pre-tax price and sales tax rate.
Revenue Growth Calculator
Calculate revenue change and growth percentage from starting and ending revenue.
Customer Acquisition Cost Calculator
Estimate average customer acquisition cost from the sales and marketing spend tied to a specific campaign, channel, or period.
ROAS Calculator
Estimate return on ad spend from ad revenue and ad spend.
Cash Flow Calculator
Estimate net cash flow and ending cash from starting cash, cash received, and cash paid out.
Operating Profit Margin Calculator
Estimate operating profit and operating profit margin from revenue, cost of goods sold, and operating expenses.
Customer Lifetime Value Calculator
Estimate gross customer revenue and customer lifetime value from order value, purchase frequency, lifespan, and gross margin.
Average Order Value Calculator
Calculate average order value from total revenue and number of orders.
Inventory Turnover Calculator
Estimate inventory turnover ratio from cost of goods sold and average inventory value.
Creator Revenue
Creator income calculators for platform revenue, sponsorships, newsletters, and courses.
YouTube Revenue Calculator
Estimate YouTube revenue from a view count and RPM assumption so you can separate traffic volume from monetization rate.
TikTok Creator Earnings Calculator
Estimate TikTok creator earnings from views and earnings per 1,000 views.
Instagram Sponsored Post Calculator
Estimate sponsorship revenue from follower count, rate per 1,000 followers, and post count.
Newsletter Revenue Calculator
Estimate paid newsletter revenue from list size, paid conversion rate, and monthly price before churn, fees, or refunds.
Course Revenue Calculator
Estimate gross revenue, platform fees, and net revenue from course price, students, and fee percentage.
Affiliate Revenue Calculator
Estimate affiliate clicks, referred sales, and monthly commission revenue from traffic and funnel assumptions.
Newsletter Sponsorship Calculator
Estimate newsletter sponsorship revenue from subscribers, open rate, sponsorship CPM, and sponsored sends.
Podcast Sponsorship Calculator
Estimate podcast sponsorship revenue from downloads, CPM, ad slots, and sponsored episodes.
Digital Product Revenue Calculator
Estimate digital product revenue from traffic, conversion rate, refund rate, and price so refunds are visible before planning spend.
AdSense Revenue Calculator
Estimate display ad revenue from pageviews, page RPM, and time period using assumptions you enter.
Retirement
Retirement calculators for savings projections, contribution goals, withdrawals, FIRE planning, and income gaps.
Retirement Savings Projection Calculator
Project how current retirement savings and monthly contributions could grow under a stated return assumption.
Retirement Contribution Calculator
Estimate the monthly contribution needed to work toward a target retirement savings amount.
Retirement Withdrawal Calculator
Estimate how long retirement savings may last based on annual withdrawals and expected annual return.
FIRE Number Calculator
Estimate a financial independence target from annual expenses and an assumed withdrawal rate.
Retirement Income Gap Calculator
Estimate the annual and monthly gap between desired retirement income and expected income sources.
Insurance
Insurance calculators for coverage needs, deductibles, premiums, and simple policy planning estimates.
Life Insurance Need Calculator
Estimate a life insurance coverage gap from income replacement, debts, final expenses, existing savings, and current coverage.
Insurance Deductible Savings Calculator
Compare the extra cash at risk from a higher deductible with the premium savings it may create over time.
Monthly Insurance Premium Calculator
Estimate the monthly payment and total paid when an annual insurance premium is split into installments with monthly fees.
Insurance Coverage Gap Calculator
Estimate a coverage gap and possible out-of-pocket exposure from replacement cost, current coverage, and deductible.
Claim Deductible Impact Calculator
Estimate insurer payment and out-of-pocket amount from claim amount, deductible, and coverage limit.
Energy & Home
Household energy and utility calculators for electricity costs, AC usage, solar savings, EV charging, and water use.
Electricity Cost Calculator
Estimate appliance energy use and electricity cost from watts, daily hours, price per kWh, and days used.
Air Conditioner Running Cost Calculator
Estimate AC energy use and running cost using power, runtime, electricity price, days, and a simple efficiency adjustment.
Solar Panel Savings Calculator
Estimate annual solar energy production, annual savings, and simple payback period from basic system assumptions.
EV Charging Cost Calculator
Estimate EV charging cost from battery size, charge added, electricity price, and charging efficiency.
Water Usage Cost Calculator
Estimate total water used and water cost using metric litres or US gallons.
Monthly Utility Cost Calculator
Estimate monthly utility cost from electricity, water, gas, internet, and other utilities.
Appliance Annual Energy Cost Calculator
Estimate annual appliance energy use and cost from watts, hours per day, electricity price, and days.
Property & Housing
Property and housing calculators for rent-versus-buy comparisons, deposits, affordability, rental yield, and moving costs.
Rent vs Buy Calculator
Compare simplified renting costs with simplified buying costs over a chosen period, including a basic home value adjustment.
Home Deposit Calculator
Estimate a home deposit target, the remaining amount to save, and a simple month count from current and monthly savings.
Mortgage Affordability Calculator
Estimate a simplified property budget from annual income, an income multiple, saved deposit, and recurring debt payments.
Rental Yield Calculator
Estimate gross annual rent, net annual income, and net rental yield from property value, monthly rent, and annual expenses.
Moving Cost Calculator
Estimate a moving budget from mover costs, travel, temporary accommodation, setup costs, and a contingency buffer.
Rent Split Calculator
Estimate rent per person from total rent and number of people.
Home Maintenance Budget Calculator
Estimate annual and monthly home maintenance budget from home value and maintenance percentage.
Internet Cost Per Person Calculator
Estimate internet cost per person from monthly bill and number of people.
Home Office Cost Calculator
Estimate home office setup or operating cost from equipment, furniture, software, and monthly costs.
Roommate Cost Calculator
Estimate each roommate share from rent, utilities, shared supplies, and roommate count.
Moving Box Cost Calculator
Estimate moving box and packing supply cost.
Travel & Location
Travel and location calculators for trip budgets, accommodation comparisons, currency costs, fuel costs, and cost-of-living differences.
Travel Budget Calculator
Estimate a trip budget from travellers, days, accommodation, food, transport, activities, and contingency.
Currency Travel Cost Calculator
Estimate currency conversion, foreign transaction fees, and the home-currency cost of a foreign price.
Hotel vs Airbnb Calculator
Compare total hotel cost and short-term rental cost from nightly rates, fees, and number of nights.
Fuel Cost Calculator
Estimate trip fuel use, total fuel cost, and cost per passenger using metric or imperial fuel units.
Cost of Living Comparison Calculator
Estimate the budget impact of a location change from current monthly costs, expected cost difference, months, and setup costs.
Fuel Efficiency Calculator
Estimate fuel efficiency from distance traveled and fuel used using metric or imperial units.
Trip Time Calculator
Estimate trip time from distance and average speed using metric or imperial units.
Toll Cost Calculator
Estimate total toll cost from toll price, toll count, and trips.
Baggage Fee Calculator
Estimate baggage fees from bag fee, number of bags, and flight segments.
Parking Cost Calculator
Estimate parking cost from rate, hours or days, and visits.
Currency Fee Calculator
Estimate currency conversion or transaction fee from amount and fee percentage.
Luggage Weight Conversion Calculator
Convert luggage weight between kilograms and pounds.
Work & Salary
Employment and pay calculators for take-home estimates, overtime, freelance rates, commute costs, and paid time off value.
Take-Home Pay Estimate Calculator
Estimate annual, monthly, and weekly take-home pay from gross salary and simple deduction assumptions.
Overtime Pay Calculator
Estimate regular pay, overtime pay, and total gross pay from hourly rate, hours, and overtime multiplier.
Freelance Day Rate Calculator
Estimate a suggested freelance day rate from desired income, business costs, working weeks, and billable days.
Commute Cost Calculator
Estimate annual, monthly, and daily commute cost from commute days, distance, cost rate, and parking or transit costs using metric or imperial units.
Paid Time Off Value Calculator
Estimate the pay value of paid leave days from annual salary and working days per year.
Effective Hourly Rate Calculator
Estimate effective hourly rate from pay, work hours, and unpaid hours.
Billable Hours Calculator
Estimate billable hours and billable revenue from weekly billable time and rate.
Project Rate Calculator
Estimate project price from expected hours, hourly rate, and buffer percentage.
Utilization Rate Calculator
Estimate utilization rate from billable hours and available hours.
Workday Count Calculator
Estimate workdays after weekends, holidays, and leave days.
Unpaid Overtime Cost Calculator
Estimate the value of unpaid overtime from hours, hourly value, and weeks.
Hourly Rate Increase Calculator
Estimate new hourly rate and annual difference from a percentage rate increase.
Productivity & Time
Productivity and time calculators for meeting costs, time savings, focus time, task capacity, and delay cost estimates.
Meeting Cost Calculator
Estimate the cost of meetings from attendees, hourly cost, meeting length, and meeting count.
Time Savings Calculator
Estimate total hours saved and the value of saved time from repeated task improvements.
Focus Time Calculator
Estimate true focus time after meetings, admin work, and interruption loss.
Task Capacity Calculator
Estimate how many tasks fit into available time after adding a planning buffer.
Procrastination Cost Calculator
Estimate delayed hours and the rough value of delay from hours postponed each week.
Meeting Time Per Month Calculator
Estimate monthly meeting hours from meetings per week, length, and weeks.
Deadline Buffer Calculator
Estimate buffer time and total planned time for a task or project.
Pomodoro Session Calculator
Estimate total focus and break time from work sessions and break lengths.
Education & Study
Education and study calculators for grades, study time, tuition costs, course workload, and learning progress estimates.
Final Grade Calculator
Estimate the final exam grade needed to reach a target overall course grade.
Grade Average Calculator
Calculate a simple average from five grade percentages.
Study Time Calculator
Estimate total study hours needed and suggested study hours per day.
Tuition Cost Calculator
Estimate gross and net education cost from tuition, courses, materials, fees, and scholarships.
Course Workload Calculator
Estimate weekly and total course workload from lecture, reading, assignment, and course length assumptions.
Food & Household
Food and household calculators for grocery budgets, meal costs, recipe scaling, bulk-buy savings, and supply costs.
Grocery Budget Calculator
Estimate grocery budget from household size, weekly food cost per person, weeks, and extra household food costs.
Meal Cost Per Serving Calculator
Estimate total meal cost and cost per serving from ingredients, servings, and packaging or cooking costs.
Recipe Scaling Calculator
Scale an ingredient quantity from original servings to desired servings.
Bulk Buy Savings Calculator
Estimate regular cost, bulk cost, and savings from comparing unit prices across multiple units.
Household Supplies Calculator
Estimate monthly and total household supplies cost across cleaning, toiletries, paper goods, and miscellaneous items.
Laundry Cost Calculator
Estimate laundry cost from loads, cost per load, detergent cost, and weeks.
Cleaning Service Cost Calculator
Estimate cleaning service cost from visit price, monthly visits, and months.
Pets
Pet cost calculators for food, grooming, boarding, dog walking, and annual care estimates.
Pet Food Cost Calculator
Estimate total and monthly pet food costs from daily food cost, number of pets, and days.
Pet Grooming Cost Calculator
Estimate annual and monthly grooming costs from visit price, visit frequency, and number of pets.
Pet Boarding Cost Calculator
Estimate pet boarding subtotal and total cost from nightly rate, nights, pets, and extra fees.
Dog Walking Cost Calculator
Estimate weekly and total dog walking costs from walk price, walk frequency, weeks, and number of dogs.
Annual Pet Care Cost Calculator
Estimate annual and monthly pet care costs across food, vet care, grooming, insurance or wellness plans, and other costs.
AI
AI cost, usage, budget, ROI, and operations calculators for teams using LLMs.
AI Token Cost Calculator
Estimate direct AI model token cost from prompt size, response size, request volume, and the selected per-token pricing tier.
AI Monthly Usage Calculator
Project monthly AI token spend from daily usage, average prompt size, and response size.
AI Agent Cost Calculator
Estimate a multi-step AI agent's monthly model-token and tool costs from tasks, model calls, and tokens per call.
AI Team Budget Calculator
Estimate a team's monthly AI budget from seats, usage, seat fees, and model pricing.
LLM Cost Comparison Calculator
Compare monthly token costs between two editable LLM pricing options.
AI ROI Calculator
Estimate whether an AI workflow's monthly cost is supported by measurable labor value and expected revenue contribution.
Prompt Optimization Savings Calculator
Estimate monthly savings from reducing prompt length while keeping output volume constant.
AI Content Production Cost Calculator
Estimate AI-assisted content production cost from token usage and human editing time.
AI Customer Support Savings Calculator
Estimate support cost savings from AI ticket deflection after AI handling costs.
AI Subscription Stack Calculator
Estimate monthly spend across AI subscriptions, seats, add-ons, and usage overages.