Calculators
Browse 4 collections and 34 tools.
Collections
Calculate loans, interest, savings, returns, discounts, and taxes.
Estimate common health metrics using clearly stated formulas and inputs.
Calculate dates, ages, durations, timestamps, and calendar differences.
Calculate percentages, averages, ratios, fractions, and common formulas.
All tools (34)
Loan Calculator
Estimate a fixed-rate loan's monthly payment (EMI), amortization schedule, extra payments payoff acceleration, and loan comparison options.
Age Calculator
Calculate exact age in years, months, and days for any comparison date, plus total days and the next birthday.
BMI Calculator
Calculate adult body mass index from metric or imperial measurements and view the standard screening category and weight range.
Compound Interest Calculator
Calculate compound growth and interest earned with annual, quarterly, monthly, or daily compounding.
Margin & Markup Calculator
Calculate profit margin, markup percentage, and required selling price from cost.
Average Calculator
Calculate mean, median, sum, count, minimum, and maximum from numbers separated by spaces, commas, semicolons, or lines.
Date Difference Calculator
Find the number of days and full weeks between two calendar dates, in either direction, with optional inclusive counting.
Simple Interest Calculator
Calculate simple interest and final amount from a principal, annual percentage rate, and time in years.
Unix Timestamp Converter
Convert Unix epoch seconds or milliseconds to readable dates and ISO 8601 timestamps.
Add Days Calculator
Add or subtract days from a start date to compute the exact future or past target calendar date.
Advertising Metrics Calculator
Calculate ROAS, CPA, CPC, CPM, CTR, and conversion rate with campaign profit analysis and target budget planning.
BMR Calculator
Estimate your Basal Metabolic Rate (BMR) – the calories your body burns at rest – using the Mifflin-St Jeor equation.
Break-even Calculator
Calculate the break-even sales volume, revenue threshold, and unit contribution margin for business planning.
Business Days Calculator
Calculate the number of business days (weekdays Monday through Friday) and weekend days between two dates.
CAGR Calculator
Calculate the Compound Annual Growth Rate (CAGR) between an initial investment value and final value over time.
Calorie Calculator
Estimate daily maintenance calorie expenditure (TDEE) based on your Basal Metabolic Rate and physical activity level.
Days Until Calculator
Calculate the exact number of days remaining or elapsed until any target date or event.
Discount Calculator
Calculate sale prices, savings amount, and percentage off instantly.
Fraction Calculator
Add, subtract, multiply, and divide fractions with simplified fraction, mixed number, and decimal outputs.
Freelance Hourly Rate Calculator
Calculate freelance hourly rate, day rate, and gross revenue targets based on desired take-home income, expenses, taxes, and billable utilization.
GCD Calculator
Find the Greatest Common Divisor (GCD), Greatest Common Factor (GCF), or Highest Common Factor (HCF) of two or more integers.
GST Calculator
Add or remove Goods and Services Tax (GST / VAT) arithmetic calculations from net or gross prices.
Inflation Calculator
Calculate the impact of inflation on future prices and purchasing power over time.
LCM Calculator
Find the Least Common Multiple (LCM) or Lowest Common Multiple of two or more integers.
Leap Year Checker
Check whether any year is a leap year and review the exact Gregorian leap-year rules.
LTV to CAC Calculator
Calculate Customer Lifetime Value (LTV), Customer Acquisition Cost (CAC), LTV:CAC ratio, and CAC payback period.
Percentage Calculator
Calculate percentage of numbers, percent increase, percentage decrease, and growth rate instantly in your browser.
Ratio Calculator
Simplify ratios (A:B) to lowest terms or solve ratio proportions (A:B = C:X).
Runway and Burn Rate Calculator
Calculate startup cash runway, net and gross monthly burn rate, zero-cash date, and target runway fundraising needs.
SaaS Metrics Calculator
Calculate Monthly Recurring Revenue (MRR), ARR, Net Revenue Retention (NRR), Gross Revenue Retention (GRR), Quick Ratio, and Rule of 40.
SIP Calculator
Calculate expected maturity wealth, total invested capital, step-up returns, and target goal investment requirements from systematic monthly investments.
Time Duration Calculator
Calculate the exact time difference between two times, including overnight and midnight-crossing durations.
Tip Calculator
Calculate tip amounts, total bill totals, and per-person splits for dining and services.
Week Number Calculator
Find the ISO 8601 week number, ISO year, and day of week for any date.