Everyday Calculators
Tips, splitting bills and other practical daily-life math.
Discount CalculatorCalculate the sale price after one or two stacked discounts, the amount saved, and the true effective discount rate — 20% plus 10% is 28%, not 30%.Stacked Discount CalculatorStack up to four discounts, a flat coupon, and sales tax to see the final price, total saved, and the true effective discount percentage.Electricity Cost CalculatorFind out how many kWh an appliance uses and what it costs per day, month and year from its wattage, daily hours of use, and your price per kWh.Final Grade CalculatorFind the score you need on your final exam to reach a target course grade, given your current grade and how much the final is worth.Fuel Cost CalculatorEstimate how much fuel a trip will use and cost from distance, fuel economy and the price at the pump, in US units (mpg, gallons) or metric (L/100km, liters).Golf Handicap CalculatorCalculate your USGA/R&A World Handicap System Handicap Index from score differentials or raw scores, using the official best-8-of-20 averaging table.Mulch CalculatorFind out how much mulch a garden bed needs in cubic yards or cubic meters from its area and depth, plus how many 2 cubic foot bags to buy.Paint CalculatorWork out paintable wall area from room dimensions, doors and windows, then how many liters or gallons of paint to buy, rounded up to a whole can.Price Per Square Foot CalculatorFind the price per square foot or square meter for a property, or compare two listings side by side to see which is the better value and by how much.Reading Time CalculatorEstimate how long an article, essay, or book takes to read from its word count, using slow, average, or fast silent-reading speeds in words per minute.Recipe ConverterScale a recipe up or down for any number of servings. Enter up to 6 ingredients and get cook-friendly fractions like 2 1/4 cups instead of decimals.Speech Time CalculatorEstimate how long a speech or presentation will take from its word count, or find your word budget for a target time, at slow, average, or fast pace.Test Grade CalculatorTurn points earned out of points possible into a percentage and letter grade on the common US 10-point scale, plus a full score-to-grade chart for the test.Tile CalculatorCalculate how many tiles you need for a floor from its size, the tile size, and a waste allowance, plus how many boxes to buy if you know tiles per box.Tip CalculatorWork out the tip, the total bill, and each person's share in seconds. Set any tip percentage, split between any number of people, and share the result.Tip Percentage CalculatorWork backward from the tip you left or the total you paid to find the exact tip percentage, plus a table of what 10 to 25 percent would have been.Tire Size CalculatorCompare two tire sizes by width, aspect ratio and wheel diameter. Get overall diameter, circumference, revolutions per mile, and speedometer error.Unit Price CalculatorCompare two products by price per unit, ounce, pound or item to see which is really cheaper and by what percentage — the bigger package isn't always cheaper.Word Count CalculatorPaste text to count words, characters (with and without spaces), sentences and paragraphs, plus estimated reading and speaking time.Words Per Page CalculatorConvert word count to page count, or pages to words, using standard 12pt Times New Roman or Arial at single, 1.5, or double line spacing.