Everyday Calculators

Tips, grades, fuel and day-to-day math.

Tip Calculator Calculate the tip and split the bill between any number of people. Discount Calculator Find the sale price and how much you save from any percentage discount. Salary to Hourly Calculator Convert a wage between hourly, daily, weekly, monthly and yearly. Final Grade Calculator Find the score you need on your final exam to hit a target grade. GPA Calculator Work out your grade point average from your course grades and credit hours. Grade Calculator Combine your assignment scores and weights, or find the final-exam score you need. Test Score Calculator Turn the number of correct answers into a percentage score and letter grade. Letter Grade Calculator Convert a percentage score into a letter grade and GPA point value. Aspect Ratio Calculator Resize width and height while keeping the same aspect ratio. Unit Price Calculator Compare up to three package sizes to see which is the better value per unit. Sales Commission Calculator Work out commission from a sale amount — flat rate or tiered. Random Number Generator Generate one or more random numbers within a range you choose. Dice Roller Roll any number of dice with any number of sides and get the total. Coin Flip Flip one or many coins and count the heads and tails. Recipe Scaler Scale a recipe ingredient up or down for a different number of servings. Paint Calculator Estimate how much paint you need to cover the walls of one or more rooms. Tile Calculator Find how many tiles you need for a floor or wall, including waste. Mulch & Soil Calculator Calculate the volume of mulch, soil or compost needed to cover an area. Concrete Calculator Work out the concrete volume and number of bags for a slab or footing. Square Footage Calculator Find the area of a room or space in square feet and square metres, plus flooring cost. Gravel Calculator Work out how much gravel you need by volume, weight, bags and cost. Roofing Calculator Estimate roof area, roofing squares, shingle bundles and material cost from your footprint. Stair Calculator Design a staircase: number of steps, riser height, run and stringer length from total rise. Tire Size Calculator Compare two tire sizes: diameter, circumference and speedometer error. Golf Handicap Calculator Estimate a handicap index from your recent scores using the World Handicap System method. Love Calculator A just-for-fun name compatibility score — the same two names always give the same result. Bra Size Calculator Estimate band and cup size from your underbust and bust measurements.