All Calculators
Browse the full TheDigitalLife calculator network across money, taxes, payroll, retirement, loans, real estate, transportation, education, math, health, fitness, pregnancy, baby, healthcare, insurance, business, freelance, ecommerce, SaaS, marketing, cooking, recipes, dates, time, utilities, tech, internet, developer tools, salary, cost of living, legal and family finance, home energy, electricity, solar, construction, DIY, conversions, and date tools. All results are for general planning only.
Browse by category
Tax & Paycheck
Federal, state, payroll, and self-employment tax tools.
Retirement & Investment
401(k), IRA, compound growth, and withdrawal planning.
Personal Finance
Budgeting, savings, debt payoff, and net worth tools.
Mortgage & Real Estate
Mortgage payments, refinance, affordability, and rent vs buy.
Auto & Transportation
Auto loans, lease vs buy, fuel, and total ownership cost.
Education
GPA, grades, exam scores, and student loan tools.
Math
Percentage, fractions, algebra, geometry, and statistics tools.
Health, Fitness & Body
BMI, calories, macros, body fat, heart rate, pace, BAC, GFR, and sleep tools.
Pregnancy, Baby & Family Health
Due date, conception, ovulation, period, and pregnancy weight gain tools.
Healthcare, Medicare & Insurance
Medicare, ACA subsidies, life, home, renters, auto, and long-term care tools.
Business, Freelance & Small Business
Freelance rates, loans, margins, ROI, cash flow, inventory, invoices, and tax planning tools.
Ecommerce, SaaS & Marketing
CLV, CAC, churn, ad metrics, payment fees, marketplace fees, FBA, and Shopify profit tools.
Food, Cooking & Recipe
Kitchen conversions, recipe scaling, cake pans, butter, cooked yields, pizza, and holiday portions.
Date, Time & Everyday Utility
Dates, age, time zones, business days, durations, tips, units, and currency conversion tools.
Tech, Internet & Developer Tools
Subnet, password, bandwidth, Base64, URL encoding, and QR code tools.
Cost of Living, Salary & Comparison
Cost comparisons, salary offers, after-tax pay, hourly/salary conversion, and paycheck tools.
U.S. Legal & Family Finance
Child support, alimony, divorce settlement, asset division, garnishment, settlement, and legal fee tools.
Home Energy, Electricity & Solar
Electric bills, appliance energy, solar savings, backup power, HVAC, insulation, windows, and EV charging tools.
Construction, Home Improvement & DIY
Concrete, roofing, tile, paint, lumber, HVAC, and material estimating tools.
Featured Calculators
Salary After-Tax Calculator by Country, State, and City
Estimate take-home pay across countries, US states, and major cities.
Loan Calculator
Estimate monthly payments and total interest on a loan.
EMI Calculator
Calculate Equated Monthly Installments for any loan.
Mortgage Calculator
Estimate monthly mortgage payments for a home loan.
APR Calculator
Estimate the Annual Percentage Rate of a loan.
Compound Interest Calculator
Estimate how savings or investments grow with compounding.
Rent vs Buy Calculator
Compare the long-term cost of renting versus buying a home.
Freelance Hourly Rate Calculator
Estimate the hourly rate freelancers should charge.
GPA Calculator
Calculate semester GPA from course grades and credit hours on common U.S. GPA scales.
Percentage Calculator
Calculate percentages, percentage changes, and percent of a total.
Grade Calculator
Calculate course grades from assignment scores, total points, and optional category weights.
Exam Score Calculator
Convert correct answers or earned points into a percentage score and letter grade estimate.
Unit Converter
Convert length, weight, temperature, volume, and more.
Currency Converter
Convert between major world currencies.
Date Calculator
Calculate the difference between dates or add days to a date.
Age Calculator
Calculate exact age in years, months, and days.
Time Zone Calculator
Convert times between cities and time zones.
Pregnancy Date Calculator
Estimate due date and pregnancy week from a starting date.
Construction Material Calculator
Estimate quantities of common construction materials.
Cost of Living Comparison Calculator
Compare estimated cost of living between two cities.
Salary Comparison Calculator
Compare two salary offers across locations.