CALCULATORS & CONVERTERS

All Tools · Page 7

Find a tool by name, topic, or what you need to calculate.

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A tool can belong to several categories. All tools lists each calculator once.

Computing

Screen Size Calculator

Enter a screen diagonal and pixel resolution to calculate active width, height, aspect ratio, pixel density and pitch, with a dimensioned screen diagram.

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Construction

Tile Calculator

Construction & DIY · Design & Drawing · Shopping · Learning & Education

Estimate tile and pack quantities from a rectangular room and tile size. Compare an area budget with two simple grid orientations and add your own allowance.

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Cooking

Recipe Scaler

Cooking & Kitchen

Scale every ingredient from the original servings to a new serving count. Enter fractions, select each ingredient’s units and inspect a complete quantity table.

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Geometry

Slope Calculator

Construction & DIY · Design & Drawing · Learning & Education · Sports & Fitness

Find percent grade and angle from rise and horizontal run, or solve a missing rise or run. Mix length units and inspect a labelled elevation diagram.

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Mathematics

Work Rate Calculator

Time & Planning · Learning & Education · Science & Lab

Calculate how long two constant-rate workers, machines or pipes take together. Include an opposing drain and an already-completed fraction, with a progress graph.

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GCD and LCM Calculator

Learning & Education

Find the exact greatest common divisor and least common multiple of 2–20 integers. Inspect progressive reductions, divisibility checks and Euclidean division steps.

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Weighted Average Calculator

Learning & Education · Money Management · Science & Lab

Enter paired values and weights to calculate a weighted mean. Inspect normalized weight shares, each contribution and a comparison with the unweighted average.

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Linear Interpolation Calculator

Learning & Education · Science & Lab · Design & Drawing

Enter two known points and a target x or y. Calculate the other coordinate, view the straight-line model and clearly distinguish interpolation from extrapolation.

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Sequence Calculator

Learning & Education

Find the nth term and sum of an arithmetic or geometric sequence. Inspect terms, running totals, a term graph and a convergent geometric sum where applicable.

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Permutation and Combination Calculator

Learning & Education

Count ordered or unordered selections, with or without repetition. Read the exact integer result, compare all four cases and list examples for small problems.

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Physics

Pressure Converter

Learning & Education · Science & Lab · Construction & DIY · Automotive

Convert pressure across SI and other common units. Distinguish absolute and gauge readings using a reference pressure you enter, and compare both in a unit table.

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Temperature Converter

Learning & Education · Science & Lab · Cooking & Kitchen · Travel

Convert Celsius, Fahrenheit, kelvin and Rankine. Distinguish actual temperatures from temperature changes, and compare all four scales in a table.

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Shopping

Unit Price Calculator

Shopping · Money Management

Compare product bundles by price per the same quantity. Mix compatible units, include multiple packs and view a ranked table and unit-price chart.

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Sports

Running Pace Calculator

Sports & Fitness · Learning & Education

Find pace, elapsed time or distance from the other two. Compare minutes per kilometer and mile, inspect split times and estimate constant-pace finish times.

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Time

Time Calculator

Time & Planning · Learning & Education · Sports & Fitness · Travel

Add or subtract up to 100 durations. Use signed clock durations or decimal hours, minutes or seconds, then compare the exact total and running sums.

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Date Difference Calculator

Time & Planning · Learning & Education · Travel

Count calendar days between two Gregorian dates, optionally including both endpoints. View the direction, week breakdown and Monday–Friday versus weekend counts.

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