Everyday Calculators

The everyday essentials beyond finance — health, dates, and quick maths, built to the same standard.

Tip Calculator & Bill Splitter

Easily calculate tips and split bills among friends. See exactly how much each person needs to pay.

Calculate total trip cost, fuel consumption, and cost per mile or kilometer. Split costs between travelers and compare efficiency units.

Body Mass Index in metric or imperial, your WHO category on a visual scale, and the healthy range for your height.

BMR and daily calorie needs (Mifflin-St Jeor), with maintenance at every activity level and loss/gain targets.

What is X% of Y, X is what percent of Y, and the percentage change between two numbers.

Exact age in years, months, and days — plus total days lived and a countdown to your next birthday.

Days, weeks, months, and working days between two dates, or add days to find a deadline.

A classic adding machine with a digital paper tape. Keeps a running total and log of all additions, subtractions, and taxes.

Generates true random numbers within defined bounds using an optional time seed to ensure randomness.

Plan the cost of a new baby — one-off setup costs, ongoing monthly essentials and childcare, and any income reduction during parental leave.

Calculate profit margin and markup from cost and price, or solve for the price needed to hit a target margin or markup percentage.

Convert a wage between hourly, daily, weekly, biweekly, monthly, and annual amounts, including optional overtime.