Math Calculators
This page lists the live math tool on all-calculators.info. The live math tool is only the Fraction Calculator, which handles fraction arithmetic and shows its formula and a worked example underneath it. This page lists only tools that are live and working.
Popular Math Calculators
How to Choose the Right Calculator
Fraction Calculator
The Fraction Calculator handles fraction arithmetic — addition, subtraction, multiplication and division — and reduces answers to their simplest form. It is the right choice for cooking measurements, workshop dimensions and school fraction exercises. The reduced form makes it easy to compare two fractions at a glance.
Good to Know
Four habits that keep your answers accurate:
- Work with one unit at a time: convert mixed units before you calculate, not after, or the answer mixes units as well.
- Watch brackets and negative signs: they change the order of operations, so enter them exactly as written.
- Sanity-check every answer: if 20% of a bill comes out larger than the bill, something went wrong — catch it before you rely on it.
- Round only at the end: rounding in the middle of a multi-step calculation carries the error forward and compounds it.
Frequently Asked Questions
How do I enter a mixed number like 2 1/2?
Enter it as an improper fraction — 2 1/2 is 5/2 — because most tools expect a single numerator and denominator. Multiply the whole-number part by the denominator and add the numerator for a reliable conversion.
Are the answers exact?
Most calculators work with decimal approximations, so very long answers are rounded to a sensible number of digits. For everyday, school and work sums this is plenty; treat the last digit of a very long answer with a little caution.