10 free tools
Everyday Calculators
Fast, free calculators for dates, money, health, and school — instant answers, no sign-up.
Fast, free calculators for dates, money, health, and school — instant answers, no sign-up. These tools are meant for local, browser-first work: cleaning, comparing, estimating, and generating something you can use right away.
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Percentage Calculator Work out X% of Y, what percent one number is of another, and percent change.
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Age Calculator Find an exact age in years, months, and days, plus weeks, days, and the next birthday.
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Date Calculator Count days between dates, add or subtract time, or count business days.
Percentage Calculator
Work out X% of Y, what percent one number is of another, and percent change.
Age Calculator
Find an exact age in years, months, and days, plus weeks, days, and the next birthday.
Date Calculator
Count days between dates, add or subtract time, or count business days.
Tip Calculator
Split a bill, set a tip percentage, and get the per-person total with optional rounding.
Loan & Mortgage Calculator
Estimate a monthly payment, total interest, and a full amortization schedule.
Salary to Hourly Calculator
Convert between hourly, weekly, monthly, and annual pay from any starting figure.
BMI Calculator
Estimate body mass index from height and weight in metric or imperial units.
GPA Calculator
Add your courses, grades, and credits for a weighted and unweighted GPA.
Pregnancy Due Date Calculator
Estimate a due date and current week from a last period, conception, or IVF date.
Time Zone Meeting Planner
Compare one meeting time across several time zones with daylight-saving handled.