All calculators

FIN Bill Split Calculator Split a bill with tip evenly between any number of people. Open calculator → FIN Break-Even Calculator Find the units and revenue needed to break even. Open calculator → FIN Compound Interest Calculator See how savings grow with interest and regular contributions. Open calculator → FIN Discount Calculator Find the sale price and how much you save in a sale. Open calculator → FIN Electricity Cost Calculator Work out what an appliance costs to run per day, month and year. Open calculator → FIN Fuel Cost Calculator Estimate the fuel cost of a trip from distance, economy and price. Open calculator → FIN Inflation Calculator See how inflation changes buying power and prices over the years. Open calculator → FIN Loan & Mortgage Calculator Work out monthly repayments, total interest and a payoff schedule. Open calculator → FIN Markup & Margin Calculator Turn a cost and sale price into profit, markup and gross margin. Open calculator → FIN Mortgage Affordability Calculator Estimate how much you might borrow and the home price you could target. Open calculator → FIN ROI Calculator Work out return on investment, net profit and annualised return. Open calculator → FIN Salary & Hourly Wage Converter Convert pay between hourly, weekly, monthly and yearly figures. Open calculator → FIN Sales Tax & VAT Calculator Add sales tax or VAT to a price, or work out the tax inside a total. Open calculator → FIN Savings Goal Calculator See how long it takes to reach a savings goal with regular deposits. Open calculator → FIN Simple Interest Calculator Interest on the principal only — interest, total and per-period amounts. Open calculator → FIN Tip Calculator Calculate a tip and split the bill between any number of people. Open calculator → FIN Unit Price Comparison Compare two products by price per unit to spot the better value. Open calculator → FIN VAT Calculator Add VAT to a net price or work backwards from a gross price. Open calculator → FIN Work Hours Calculator Add up hours worked from clock-in and clock-out, minus breaks. Open calculator →

HLT Blood Pressure Category See which category a blood-pressure reading falls into. Open calculator → HLT BMI Calculator Calculate Body Mass Index and see your healthy weight range. Open calculator → HLT Body Surface Area Calculator Estimate body surface area from height and weight (Mosteller & Du Bois). Open calculator → HLT Calories Burned Calculator Estimate the energy used during exercise from activity, weight and time. Open calculator → HLT Pregnancy Due Date Calculator Estimate a due date and gestational age from the last period. Open calculator → HLT Heart Rate Zones Calculator Estimate your max heart rate and five training zones from your age. Open calculator → HLT Heat Index Calculator Find the "feels like" temperature from heat and humidity. Open calculator → HLT One-Rep Max Calculator Estimate your one-rep max from a set, with useful training percentages. Open calculator → HLT Running Pace Calculator Turn a distance and time into pace per km/mile and speed. Open calculator → HLT Sleep Cycle Calculator Find bedtimes or wake times that line up with 90-minute sleep cycles. Open calculator → HLT Steps to Distance Calculator Turn a step count into distance using your height and pace. Open calculator → HLT Calorie & TDEE Calculator Estimate your resting and daily energy use as a general starting point. Open calculator → HLT Daily Water Intake Calculator A rough daily fluid guide based on body weight and activity. Open calculator → HLT Wind Chill Calculator Find the "feels like" temperature from cold and wind speed. Open calculator →

CON Asphalt Calculator Estimate the tonnage of asphalt for a driveway or path. Open calculator → CON Board Feet Calculator Calculate lumber board feet and cost from board dimensions. Open calculator → CON Brick Calculator Estimate how many bricks a wall needs, with a wastage allowance. Open calculator → CON BTU Calculator (Heating & Cooling) Estimate the BTU capacity a room needs for cooling or heating. Open calculator → CON Concrete Volume Calculator Estimate concrete volume and bags needed for slabs and columns. Open calculator → CON Drywall Sheet Calculator Work out how many drywall sheets an area needs, with a wastage allowance. Open calculator → CON Fence Calculator Work out the panels and posts needed for a fence run. Open calculator → CON Gravel & Aggregate Calculator Estimate the volume, weight and bags of gravel or aggregate you need. Open calculator → CON Paint Coverage Calculator Estimate how much paint you need from area, coats and coverage. Open calculator → CON Rebar Calculator Estimate rebar count and total length for a slab grid. Open calculator → CON Roof Pitch Calculator Convert roof rise and run into pitch angle, slope factor and grade. Open calculator → CON Square Footage Calculator Measure floor area, convert between units and estimate material cost. Open calculator → CON Stair Calculator Work out steps, riser height, total run and pitch for a staircase. Open calculator → CON Tile Calculator Work out how many tiles you need, including a wastage allowance. Open calculator → CON Wallpaper Calculator Find how many rolls of wallpaper a room needs, allowing for the pattern. Open calculator →

CKG Baking Pan Size Converter Scale a recipe between pan sizes and shapes by comparing areas. Open calculator → CKG Brine Calculator Work out the salt for a wet brine at a chosen concentration. Open calculator → CKG Butter Converter Convert butter between sticks, grams, ounces, cups and tablespoons. Open calculator → CKG Air Fryer Conversion Calculator Convert conventional oven temperature and time to air-fryer settings. Open calculator → CKG Coffee Ratio Calculator Work out how much coffee to use for your water and brew strength. Open calculator → CKG Cooking Converter Convert cups, spoons, millilitres and grams for common ingredients. Open calculator → CKG Cups to Grams Converter Convert cups to grams for flour, sugar, butter and more. Open calculator → CKG Oven Temperature Converter Convert oven temperatures between Celsius, Fahrenheit and gas mark. Open calculator → CKG Pizza Dough Calculator Flour, water, salt and yeast for any number of dough balls. Open calculator → CKG Recipe Scaler Scale an ingredient up or down for a different number of servings. Open calculator → CKG Rice & Water Ratio Calculator Work out the water for perfectly cooked rice, by type and amount. Open calculator → CKG Roast Cooking Time Calculator Estimate roasting time from the weight and type of your joint. Open calculator → CKG Slow Cooker Converter Convert a conventional cooking time to slow-cooker low and high times. Open calculator → CKG Yeast Converter Swap between fresh, active dry and instant yeast in a recipe. Open calculator →

EDU Density Calculator Solve density, mass or volume using density = mass ÷ volume. Open calculator → EDU Final Grade Calculator Find the exam score you need to hit your target grade. Open calculator → EDU Fraction Calculator Add, subtract, multiply or divide fractions, simplified automatically. Open calculator → EDU GPA Calculator Work out your grade point average from course grades and credits. Open calculator → EDU Final Grade Needed Calculator Find the final-exam score you need to reach your target grade. Open calculator → EDU Logarithm Calculator Find a logarithm in any base, plus natural, base-10 and base-2 logs. Open calculator → EDU Mean, Median & Mode Calculator Find the mean, median, mode and range of a list of numbers. Open calculator → EDU Number Base Converter Convert numbers between binary, octal, decimal and hexadecimal. Open calculator → EDU Percent Error Calculator Compare a measured value with the true value to find percent error. Open calculator → EDU Probability Calculator Combine two independent event probabilities: and, or, neither. Open calculator → EDU Roman Numeral Converter Convert numbers to Roman numerals and Roman numerals back to numbers. Open calculator → EDU Scientific Notation Converter Convert numbers to scientific, E and engineering notation. Open calculator → EDU Standard Deviation Calculator Find the standard deviation, variance and mean of a data set. Open calculator →

MTH Age Calculator Work out an exact age in years, months and days from any birth date. Open calculator → MTH Aspect Ratio Calculator Resize dimensions while keeping the aspect ratio, and simplify it. Open calculator → MTH Circle Calculator Find a circle’s radius, diameter, circumference and area from any one. Open calculator → MTH Area Calculator Find the area and perimeter of rectangles, circles and triangles. Open calculator → MTH Combinations & Permutations Count combinations (nCr) and permutations (nPr) of a selection. Open calculator → MTH Distance & Midpoint Calculator Distance, midpoint and slope between two points (x₁,y₁) and (x₂,y₂). Open calculator → MTH Date Difference Calculator Count the days, weeks, months and working days between two dates. Open calculator → MTH Exponent Calculator Raise a number to a power, plus squares, cubes and roots. Open calculator → MTH LCM & GCD Calculator Find the greatest common divisor and least common multiple of numbers. Open calculator → MTH Percentage Change Calculator Find the percentage increase or decrease between two numbers. Open calculator → MTH Percentage Calculator Find a percentage of a number, a ratio, or a percentage change. Open calculator → MTH Prime Factorization Calculator Break a number into its prime factors and count its divisors. Open calculator → MTH Pythagorean Theorem Calculator Solve the hypotenuse or a missing leg of a right triangle. Open calculator → MTH Quadratic Equation Solver Solve ax² + bx + c = 0 with the discriminant, roots and vertex. Open calculator → MTH Ratio Calculator Simplify ratios to lowest terms or solve a proportion for the missing value. Open calculator → MTH Slope & Line Equation Calculator Find the slope, equation, length and angle of a line from two points. Open calculator → MTH Speed, Distance & Time Calculator Solve for speed, distance or time — with unit conversions and pace. Open calculator → MTH Unit Converter Convert length, weight and temperature between metric and imperial. Open calculator → MTH Volume Calculator Find the volume of a box, cylinder, sphere or cone. Open calculator →

UNI Temperature Converter Convert temperatures between Celsius, Fahrenheit, Kelvin and Rankine. Open calculator →