Calculate Everything

39 free calculators for finance, health, math & everyday life. Instant results, no sign-up.

Mortgage Calculator

Estimate your monthly mortgage payment with taxes, insurance and total interest.

Loan Calculator

Calculate monthly payments, total interest & repayment for any fixed-rate loan.

Compound Interest Calculator

See how money grows with compound interest at any compounding frequency.

Savings Calculator

Project your savings balance with regular monthly deposits over time.

Salary Calculator

Convert hourly wages to annual, monthly and weekly pay — and back.

Sales Tax Calculator

Add or remove sales tax / VAT from any price instantly.

Tip Calculator

Calculate the right tip and split the bill between friends.

Investment Calculator

Project portfolio growth with monthly contributions, a rising contribution rate and compound returns.

Retirement Calculator

Project your retirement balance and estimated monthly income using the 4% withdrawal rule.

Paycheck Calculator

Estimate your take-home pay after 2026 federal tax brackets and FICA.

Mortgage Refinance Calculator

Compare your current mortgage to a refinance offer and find your break-even point.

401(k) Calculator

Project your 401(k) balance at retirement with employer match and 2026 IRS contribution limits.

Social Security Calculator

See how claiming Social Security early or late changes your monthly benefit.

Student Loan Calculator

Compare standard repayment to the new income-based RAP plan, including forgiveness.

No Tax on Tips & Overtime Calculator

Estimate your federal tax savings from the new tips and overtime deductions.

Tariff Calculator

Estimate customs duty and total landed cost for imported goods.

BMI Calculator

Calculate your Body Mass Index with metric or imperial units.

Calorie Calculator

Find your daily calorie needs (TDEE) for maintenance, cutting or bulking.

BMR Calculator

Calculate your Basal Metabolic Rate with the Mifflin-St Jeor formula.

Body Fat Calculator

Estimate your body fat percentage with the U.S. Navy method.

Ideal Weight Calculator

Find your ideal body weight using four scientific formulas.

Water Intake Calculator

How much water should you drink per day? Get your personal estimate.

Due Date Calculator

Estimate your baby's due date, current week and trimester.

Ovulation Calculator

Predict your fertile window and next ovulation date.

Calorie Deficit Calculator

Find the daily calorie deficit you need to hit a goal weight by a target date.

Percentage Calculator

Solve any percentage problem: X% of Y, ratios and percent change.

Fraction Calculator

Add, subtract, multiply and divide fractions with simplified results.

Average Calculator

Calculate mean, median, min, max and sum of any list of numbers.

Random Number Generator

Generate random numbers in any range — single or multiple, with or without repeats.

Grade Calculator

Work out your course grade and what you need on the final exam.

GPA Calculator

Calculate your Grade Point Average on the 4.0 scale with credits.

Age Calculator

Your exact age in years, months, days — plus days until your next birthday.

Date Calculator

Days between two dates, or add/subtract days from any date.

Time Calculator

Add or subtract hours and minutes, or find the duration between two times.

Unit Converter

Convert length, weight and temperature between metric and imperial.

Discount Calculator

What will you pay after a discount — and how much do you save?

Countdown Timer

Live countdown to any date and time — birthdays, launches, deadlines.

Love Calculator

Enter two names and get your fun compatibility score.

Dog Age Calculator

Convert your dog's age to human years with size-adjusted formulas.

Free Online Calculators for Every Question

EveryCalc bundles the calculators people actually need — from mortgage payments and compound interest to BMI, percentages and exact age. Every tool runs instantly in your browser: no downloads, no accounts, no data sent to a server.

Each calculator page explains the formula behind the result, walks through a realistic example and answers the most common questions — so you don't just get a number, you understand it. Popular right now: Mortgage Calculator, Loan Calculator, Compound Interest Calculator, Investment Calculator, Retirement Calculator, Paycheck Calculator, BMI Calculator, Calorie Calculator, Due Date Calculator, Percentage Calculator, Age Calculator, Date Calculator.