Maths Calculators — Free Online Number & Conversion Tools
Percentage, algebra, and geometry calculators.
11
Tools Available
About These Maths Tools
Access our full range of free UK maths calculators. From percentages and fractions to algebra, geometry, and scientific calculations — all tools are instant, accurate, and completely free to use.
Start With Popular Maths Tools
Follow this maths calculator silo from the category hub into the most useful tools, then move between related calculators from each tool page.
All Maths Tools (11)
Percentage Calculator
Quickly calculate percentages, increases, and decreases.
Reverse Percentage Calculator
Work backwards from a percentage increase or decrease to find the original amount.
Algebra Calculator
Solve linear equations (ax + b = c) instantly with our simple algebra solver.
Geometry Calculator
Calculate area and perimeter for circles, rectangles, and triangles.
Fractions Calculator
Add, subtract, multiply, and divide fractions with simplified results.
Scientific Calculator
A full-featured scientific calculator for advanced mathematical operations.
Area Converter
Convert between various area units like Square Meters, Acres, and Square Miles.
Volume Converter
Convert between liters, gallons, cubic meters, and other volume units.
Speed Converter
Convert speeds between mph, km/h, knots, and more.
Time Zone Converter
See the current time in major world cities and calculate time differences.
Mass Converter
Convert between Kilograms, Pounds, Ounces, and other weight units.