About Math & Science Calculators
Math and science calculators help students, teachers and professionals solve problems quickly and accurately, without errors or tedious manual working. From trigonometry and logarithms to unit conversions and currency exchange, the right tool gives you a trustworthy answer in seconds so you can focus on understanding the concept rather than crunching numbers. Our free math and science calculators at UniCalculator are built for homework, exams, lab work, engineering tasks and everyday calculations.
The Scientific Calculator is the workhorse of this category. It handles the four basic operations alongside advanced functions including square roots, powers, logarithms (log and ln), trigonometry (sin, cos and tan), percentages, the constant pi and full parentheses support for complex expressions. Whether you are checking algebra homework, solving physics problems or working through an engineering formula, it delivers precise results with a clean, mobile-friendly layout.
Conversions are a constant need in science and daily life, and the Unit Converter makes them effortless. It instantly converts length, weight, temperature, area, volume, speed, time and data storage, with real-time results, swap and copy features. Instead of memorising conversion factors or risking a mistake, you get accurate values immediately — perfect for lab measurements, recipes, travel, construction and study.
When numbers cross borders, the Currency Converter steps in with live mid-market exchange rates for major world currencies and 150+ pairs behind the scenes. It is ideal for travel budgeting, online shopping, remittance estimates and economics coursework. Rounding out the set, the Percentage Calculator solves everyday percentage problems — increases, decreases, shares and reverse percentages — that appear constantly in maths, finance and science.
Every calculator here is completely free, requires no sign-up and works instantly on phones, tablets and computers. Results update as you type, so you can experiment with different inputs and immediately see how the answer changes — a great way to build intuition as well as get a result. The tools follow standard mathematical and scientific conventions, so you can rely on them for homework, exams and professional work alike. Nothing you enter is stored, keeping your work private.
Strong problem-solving comes from understanding methods and verifying answers, and these calculators support both. Bookmark this Math & Science Calculators hub and return whenever you face a tricky calculation, a conversion or a percentage problem. Use the Scientific Calculator for advanced maths, the Unit Converter and Currency Converter for everyday conversions, and the Percentage Calculator for quick proportions. With reliable tools at your fingertips, you can work faster, check your reasoning and learn more along the way.