You might also likeLoan Calculator
Everyday Calculators
You might also like Tolvido — The Swiss Army Knife of Web Tools Tolvido is the Swiss Army knife of web tools — free, single-purpose calculators, converters, and generators, all in your browser. No sign-up.
0
 
Underweight Normal weight Overweight Obese
You might also like Read and Burn Send a self-destructing encrypted message: it's deleted after being read once, or automatically after 30 days.

Everyday Calculators

Four calculators in one place: BMI, days between two dates, percentages, and a tip calculator with bill splitting. Switch between them with the tabs above — no need to visit a separate page for each.

How it works

Each tab uses a standard, verifiable formula: BMI divides weight in kilograms by height in meters squared; the date calculator counts whole calendar days (and separately, weekdays) between two dates; percentage results use plain ratio math (part/whole × 100); and the tip calculator applies your chosen percentage to the bill total, then divides the grand total evenly across the number of people you specify.

Worked example

A $50 bill split three ways with an 18% tip: the tip comes to $9, the total is $59, and each person owes $19.67 — switch to the Tip & Bill Split tab to see this update live as you change any number.

Which BMI categories does this use?
– The standard World Health Organization ranges: under 18.5 is underweight, 18.5–25 is normal weight, 25–30 is overweight, and 30+ is obese.
Does the days calculator count the start and end date both?
– It counts the whole days between the two dates (end minus start), the same way you'd count nights between a check-in and check-out date.
Can I enter a custom tip percentage?
– Yes — type any percentage into the custom field next to the preset buttons and it's used immediately.
Is my data stored anywhere?
– No — every calculation happens in your browser and nothing is sent to a server.

More Free Tools

Countdown Timer Coin Flip, Decision Wheel & Dice Roller Favicon Generator Loan Calculator Lorem Ipsum Generator PDF Merger Password Generator Quotes Random Number Generator Read and Burn Tolvido — The Swiss Army Knife of Web Tools Typing Speed Test Unit Converter Word Counter World Clock
You might also like Word Counter Free online word counter: count words, characters, and sentences instantly, with reading time estimate. No sign-up.
You might also likeUnit Converter