Free online tools for everyday answers.

Estimate pallet capacity, skid layout, linear feet, floor usage and payload for common trucks and trailers.

Calculate trucking fuel surcharge per mile and total FSC from fuel price, base price, MPG and miles.

Convert decimals and repeating decimals to simplified fractions and mixed numbers.

Calculate mean, median, mode, range, quartiles and IQR.

Calculate simple and independent-event probabilities.

Calculate standard score and approximate normal percentile.

Convert numbers to Roman numerals and Roman numerals back to numbers.

Round numbers and decimals using several rounding methods.

Solve a right triangle for a missing leg or hypotenuse.

Convert whole numbers into written English words.

Count significant figures and round numbers to a selected number of significant digits.

Calculate matrix multiplication, determinant, inverse, transpose and RREF.

Calculate log base 10, natural log, base 2 or a custom logarithm base.

Calculate nPr permutations with or without repetition.

Calculate nCr combinations with or without repetition.

Convert a local MP4 video file to MP3 directly in your browser.

Estimate your next period date and upcoming menstrual cycles.

Estimate ovulation timing, fertile days and your next period.

Estimate possible fertile windows across upcoming menstrual cycles.

Estimate due date, pregnancy week, conception date and days remaining.

Calculate estimated pregnancy week, day and due-date countdown.

Estimate quarterly IFTA fuel tax due or credit by jurisdiction.

Calculate LTL shipment volume and pounds per cubic foot.

Estimate density-based LTL freight class using the 13-band density scale.

Estimate truck trip transit time using a simplified U.S. HOS model.

Estimate truck transit time using a simplified Canadian HOS model.

Calculate adult body mass index, BMI category and BMI-based weight range.

Estimate daily maintenance calories from resting energy and activity level.

Estimate total daily energy expenditure from resting energy and activity.

Estimate adult resting energy using the Mifflin-St Jeor equation.

Estimate adult body-fat percentage from tape-measure circumferences.

Compare two heights visually and calculate their exact difference.

Calculate test percentages and generate a complete grading chart.

Calculate population or sample standard deviation, variance and mean.

Solve quadratic equations and find real or complex roots.

Calculate powers using positive, negative or decimal exponents.

Graph functions, trace points, view tables and analyze equations.

Advanced calculator for trig, logs, roots, powers, factorials and more.

Calculate and simplify fractions and mixed numbers with steps.

Add or subtract multiple time durations or calculate a clock time before or after a duration.

Calculate percentages, increases and decreases.

Estimate loan payments, interest, fees, payoff time and amortization.

Run a live on-page and technical SEO audit for any public website.

Generate strong, random passwords securely in your browser.

Create a free downloadable QR code from a URL or text.

Check the public IPv4 or IPv6 address visible to websites.

Test download speed, upload speed, ping, jitter and loaded latency from your browser.

Calculate trip fuel cost, fuel required, cost per mile or kilometre and cost per person.

Calculate miles per US gallon from distance travelled and fuel used.

Calculate freight rate per loaded mile and effective rate per total mile including deadhead and empty miles.

Estimate truck load profit from freight revenue, loaded and deadhead miles, operating cost, tolls, dispatch and factoring fees.

Calculate truck cost per mile or kilometre from fuel, fixed and variable expenses, then estimate break-even and target loaded rates.

Estimate commercial truck financing payments, amount financed, total interest and cost per mile with down payment, trade-in, taxes and fees.

Calculate freight factoring fees, reserve withholding, initial funding, net proceeds and the invoice amount needed for a target advance.

Set a free online countdown timer with quick presets, pause, resume and an audible completion alert.

Use a free online stopwatch with start, pause, reset and lap-time tracking.

See the current time in major cities and time zones around the world.

Calculate volume for cubes, rectangular prisms, cylinders, cones, spheres, pyramids and triangular prisms.

Calculate area for rectangles, squares, triangles, circles, trapezoids, parallelograms, ellipses and sectors.

Find the least common multiple of two or more positive integers.

Calculate slope from two points plus line equation, angle, grade and point distance.

Find the greatest common factor of two or more positive integers.

Check whether a whole number is prime or composite and list its positive factors.

Convert milliliters to US or Imperial fluid ounces with clearly labeled volume systems.

Convert US or Imperial fluid ounces to milliliters with the correct fluid-ounce standard.

Convert acres to square feet instantly for land, property, farming and lot-size calculations.

Convert square feet to acres instantly for property, lots, farms and land planning.

Convert square meters or square metres to square feet for homes, rooms, offices and floor plans.

Convert square feet to square meters or square metres for property, rooms and floor plans.

Convert meters or metres to yards instantly using the exact international yard definition.

Convert yards to meters or metres instantly using the exact international yard definition.

Convert milliliters to US customary, US legal, metric or Imperial cups.

Convert US customary, US legal, metric or Imperial cups to milliliters.

Convert millimeters to centimeters instantly using the exact metric relationship.

Convert centimeters to millimeters instantly using the exact metric relationship.

Convert miles per hour to kilometers per hour instantly.

Convert kilometers per hour to miles per hour instantly.

Convert grams to avoirdupois ounces instantly using the exact ounce definition.

Convert avoirdupois ounces to grams instantly using the exact ounce definition.

Convert liters or litres to US and Imperial gallons with selectable gallon type.

Convert US or Imperial gallons to liters with a selectable gallon system.

Convert kilometers to miles instantly using the exact international conversion relationship.

Convert miles to kilometers instantly using the exact international mile definition.

Convert meters to feet instantly using the exact international foot definition.

Convert feet to meters instantly using exactly 0.3048 meters per foot.

Convert millimeters to inches instantly with the exact 25.4 mm per inch relationship.

Convert inches to millimeters instantly using exactly 25.4 millimeters per inch.

Convert inches to feet instantly using 12 inches per foot.

Convert PDF pages into JPG images directly in your browser.

Resize JPG, PNG and WebP images by pixels or percentage directly in your browser.