Calculators

Quick, accurate answers to everyday questions about money, health, dates and shopping. Results update live as you type, and nothing you enter leaves your browser.

Percentage Calculator

Percent of, percent is, percent change and add or subtract %.

BMI Calculator

Body mass index with healthy weight range, metric or imperial.

Age Calculator

Exact age in years, months and days, plus next birthday.

Loan / EMI Calculator

Monthly payment, total interest and amortization schedule.

Discount Calculator

Sale price after stacked discounts and tax, or find % off.

Tip Calculator

Tip, total and per-person split with rounding.

Date Difference Calculator

Days, weeks, months and business days between two dates.

Unit Price Comparison

Compare cost per kg, litre or item to find the best value.

GPA Calculator

Semester and cumulative GPA on the 4.0 scale, weighted option.

Profit Margin Calculator

Margin, markup and the price needed for a target margin.

Hourly to Salary Calculator

Convert hourly pay to annual, monthly and weekly salary.

Compound Interest Calculator

Investment growth with contributions and a yearly table.

Military Time Converter

Convert 24-hour military time to AM/PM and back.

Decimal Hours Converter

Hours and minutes to decimal hours, plus a timesheet adder.

Fuel Cost Calculator

Trip fuel cost from distance, efficiency and price.

About our calculators

Each calculator shows its result the moment you change a number, along with the formula or breakdown behind it, so you can check the working. Money tools share a currency setting that is remembered on your device. Figures are for guidance: for medical, legal or financial decisions, confirm with a professional.