What can these everyday calculators do?

Convert units (length, weight, temperature, data, speed, area), work out percentages three ways, calculate exact age from a date of birth, find the number of days between two dates, compute BMI, and generate lorem ipsum placeholder text — all free and in your browser.

Everyday Calculators — Unit Converter, Percentage, Age, BMI

Free everyday calculators in one place: unit converter (length, weight, temperature, data, speed, area), percentage calculator, age calculator, date difference, BMI and a lorem ipsum generator. No signup.

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TL;DR: Free everyday calculators in one place: unit converter (length, weight, temperature, data, speed, area), percentage calculator, age calculator, date d…

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 18, 2026

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Six everyday calculators in one free page. Convert units, work out percentages, calculate your exact age, count days between dates, find your BMI, and generate lorem ipsum — all free and in your browser.

What you can do

Unit converter — length, weight, temperature, digital data, speed and area.
Percentage calculator — A% of B, A is what % of B, and % change.
Age calculator — exact years, months and days from a date of birth.
Date difference — days and weeks between two dates.
BMI calculator — from weight (kg) and height (cm), with the category band.
Lorem ipsum — placeholder words, sentences or paragraphs.

100% free, no sign-up. For exam maths like CGPA and attendance, see the Student Calculators, or browse all free tools.